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ipq806x: add pcie support to ipq806x based platforms 

This change adds PCIe support to IPQ806x based platforms. The driver is
actually cherry-picked from the following LKML thread:
*https://lwn.net/Articles/643086/ (patches 110-111)

We also add here an additional fix to support multiple PCI controllers
on the same platform (patch 112), and to patch the ap148 & dbs149 DTS
files (patch 113).

Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@45663 3c298f89-4303-0410-b956-a3cf2f4a3e73
master
Felix Fietkau 2015-05-10 11:47:09 +00:00
parent c6c8c1b357
commit 11551d3e65
12 changed files with 2662 additions and 23 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
target/linux/ipq806x/config-3.18
View File

@ -258,6 +258,11 @@ CONFIG_OLD_SIGSUSPEND3=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PCI=y
CONFIG_PCIEAER=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCIE_DW=y
CONFIG_PCIE_QCOM=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_MSI=y
CONFIG_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
@ -295,6 +300,7 @@ CONFIG_QCOM_BAM_DMA=y
CONFIG_QCOM_GSBI=y
CONFIG_QCOM_SCM=y
CONFIG_QCOM_WDT=y
CONFIG_RAS=y
# CONFIG_RCU_BOOST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_CPU_STALL_VERBOSE=y

10
target/linux/ipq806x/config-4.0
View File

@ -267,7 +267,14 @@ CONFIG_OLD_SIGSUSPEND3=y
CONFIG_PAGEFLAGS_EXTENDED=y
CONFIG_PAGE_OFFSET=0xC0000000
CONFIG_PCI=y
# CONFIG_PCI_DOMAINS_GENERIC is not set
CONFIG_PCIEAER=y
CONFIG_PCIEPORTBUS=y
CONFIG_PCIE_DW=y
CONFIG_PCIE_PME=y
CONFIG_PCIE_QCOM=y
CONFIG_PCI_DEBUG=y
CONFIG_PCI_DOMAINS=y
CONFIG_PCI_DOMAINS_GENERIC=y
CONFIG_PCI_MSI=y
CONFIG_PERF_EVENTS=y
CONFIG_PERF_USE_VMALLOC=y
@ -307,6 +314,7 @@ CONFIG_QCOM_BAM_DMA=y
CONFIG_QCOM_GSBI=y
CONFIG_QCOM_SCM=y
CONFIG_QCOM_WDT=y
CONFIG_RAS=y
# CONFIG_RCU_BOOST is not set
CONFIG_RCU_CPU_STALL_TIMEOUT=21
CONFIG_RCU_STALL_COMMON=y

266
target/linux/ipq806x/patches-3.18/110-DT-PCI-qcom-Document-PCIe-devicetree-bindings.patch Normal file
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@ -0,0 +1,266 @@
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [v2,3/5] DT: PCI: qcom: Document PCIe devicetree bindings
From: Stanimir Varbanov <svarbanov@mm-sol.com>
X-Patchwork-Id: 6326181
Message-Id: <1430743338-10441-4-git-send-email-svarbanov@mm-sol.com>
To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
Mark Rutland <mark.rutland@arm.com>,
Grant Likely <grant.likely@linaro.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Stanimir Varbanov <svarbanov@mm-sol.com>
Date: Mon, 4 May 2015 15:42:16 +0300
Document Qualcomm PCIe driver devicetree bindings.
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
---
.../devicetree/bindings/pci/qcom,pcie.txt | 231 ++++++++++++++++++++
1 files changed, 231 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
new file mode 100644
index 0000000..dcf7348
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
@@ -0,0 +1,231 @@
+* Qualcomm PCI express root complex
+
+- compatible:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Value shall include
+ - "qcom,pcie-v0" for apq/ipq8064
+ - "qcom,pcie-v1" for apq8084
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Register ranges as listed in the reg-names property
+
+- reg-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Must include the following entries
+ - "parf" Qualcomm specific registers
+ - "dbi" Designware PCIe registers
+ - "elbi" External local bus interface registers
+ - "config" PCIe configuration space
+
+- device_type:
+ Usage: required
+ Value type: <string>
+ Definition: Should be "pci". As specified in designware-pcie.txt
+
+- #address-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be set to 3. As specified in designware-pcie.txt
+
+- #size-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be set 2. As specified in designware-pcie.txt
+
+- ranges:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: MSI interrupt
+
+- interrupt-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain "msi"
+
+- #interrupt-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be 1. As specified in designware-pcie.txt
+
+- interrupt-map-mask:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- interrupt-map:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- clocks:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and clock specifier pairs as listed
+ in clock-names property
+
+- clock-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ * should be populated for v0 and v1
+ - "iface" Configuration AHB clock
+
+ * should be populated for v0
+ - "core" Clocks the pcie hw block
+ - "phy" Clocks the pcie PHY block
+
+ * should be populated for v1
+ - "aux" Auxiliary (AUX) clock
+ - "bus_master" Master AXI clock
+ - "bus_slave" Slave AXI clock
+
+- resets:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and reset specifier pairs as listed
+ in reset-names property
+
+- reset-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ * should be populated for v0
+ - "axi" AXI reset
+ - "ahb" AHB reset
+ - "por" POR reset
+ - "pci" PCI reset
+ - "phy" PHY reset
+
+ * should be populated for v1
+ - "core" Core reset
+
+- power-domains:
+ Usage: required (for v1 only)
+ Value type: <prop-encoded-array>
+ Definition: A phandle and power domain specifier pair to the
+ power domain which is responsible for collapsing
+ and restoring power to the peripheral
+
+- <name>-supply:
+ Usage: required
+ Value type: <phandle>
+ Definition: List of phandles to the power supply regulator(s)
+ * should be populated for v0 and v1
+ - "vdda" core analog power supply
+
+ * should be populated for v0
+ - "vdda_phy" analog power supply for PHY
+ - "vdda_refclk" analog power supply for IC which generate
+ reference clock
+
+- phys:
+ Usage: required (for v1 only)
+ Value type: <phandle>
+ Definition: List of phandle(s) as listed in phy-names property
+
+- phy-names:
+ Usage: required (for v1 only)
+ Value type: <stringlist>
+ Definition: Should contain "pciephy"
+
+- <name>-gpio:
+ Usage: optional
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and gpio specifier pairs. Should contain
+ - "perst" PCIe endpoint reset signal line
+ - "pewake" PCIe endpoint wake signal line
+
+- pinctrl-0:
+ Usage: required
+ Value type: <phandle>
+ Definition: List of phandles pointing at a pin(s) configuration
+
+- pinctrl-names
+ Usage: required
+ Value type: <stringlist>
+ Definition: List of names of pinctrl-0 state
+
+* Example for v0
+ pcie0: pci@1b500000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b500000 0x1000
+ 0x1b502000 0x80
+ 0x1b600000 0x100
+ 0x0ff00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* I/O */
+ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* memory */
+ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+ clocks = <&gcc PCIE_A_CLK>,
+ <&gcc PCIE_H_CLK>,
+ <&gcc PCIE_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+ resets = <&gcc PCIE_ACLK_RESET>,
+ <&gcc PCIE_HCLK_RESET>,
+ <&gcc PCIE_POR_RESET>,
+ <&gcc PCIE_PCI_RESET>,
+ <&gcc PCIE_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+ };
+
+* Example for v1
+ pcie0@fc520000 {
+ compatible = "qcom,pcie-v1";
+ reg = <0xfc520000 0x2000>,
+ <0xff000000 0x1000>,
+ <0xff001000 0x1000>,
+ <0xff002000 0x2000>;
+ reg-names = "parf", "dbi", "elbi", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x81000000 0 0 0xff200000 0 0x00100000 /* I/O */
+ 0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
+ interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+ clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
+ <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
+ <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
+ <&gcc GCC_PCIE_0_AUX_CLK>;
+ clock-names = "iface", "master_bus", "slave_bus", "aux";
+ resets = <&gcc GCC_PCIE_0_BCR>;
+ reset-names = "core";
+ power-domains = <&gcc PCIE0_GDSC>;
+ vdda-supply = <&pma8084_l3>;
+ phys = <&pciephy0>;
+ phy-names = "pciephy";
+ perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
+ pinctrl-0 = <&pcie0_pins_default>;
+ pinctrl-names = "default";
+ };

753
target/linux/ipq806x/patches-3.18/111-PCI-qcom-Add-Qualcomm-PCIe-controller-driver.patch Normal file
View File

@ -0,0 +1,753 @@
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [v2,4/5] PCI: qcom: Add Qualcomm PCIe controller driver
From: Stanimir Varbanov <svarbanov@mm-sol.com>
X-Patchwork-Id: 6326161
Message-Id: <1430743338-10441-5-git-send-email-svarbanov@mm-sol.com>
To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
Mark Rutland <mark.rutland@arm.com>,
Grant Likely <grant.likely@linaro.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Stanimir Varbanov <svarbanov@mm-sol.com>
Date: Mon, 4 May 2015 15:42:17 +0300
The PCIe driver reuse the Designware common code for host
and MSI initialization, and also program the Qualcomm
application specific registers.
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
---
MAINTAINERS | 7 +
drivers/pci/host/Kconfig | 9 +
drivers/pci/host/Makefile | 1 +
drivers/pci/host/pcie-qcom.c | 677 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 694 insertions(+), 0 deletions(-)
create mode 100644 drivers/pci/host/pcie-qcom.c
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7127,6 +7127,13 @@ L: linux-pci@vger.kernel.org
S: Maintained
F: drivers/pci/host/*spear*
+PCIE DRIVER FOR QUALCOMM MSM
+M: Stanimir Varbanov <svarbanov@mm-sol.com>
+L: linux-pci@vger.kernel.org
+L: linux-arm-msm@vger.kernel.org
+S: Maintained
+F: drivers/pci/host/*qcom*
+
PCMCIA SUBSYSTEM
P: Linux PCMCIA Team
L: linux-pcmcia@lists.infradead.org
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/host/Kconfig
@@ -91,4 +91,13 @@ config PCI_XGENE
There are 5 internal PCIe ports available. Each port is GEN3 capable
and have varied lanes from x1 to x8.
+config PCIE_QCOM
+ bool "Qualcomm PCIe controller"
+ depends on ARCH_QCOM && OF || (ARM && COMPILE_TEST)
+ select PCIE_DW
+ select PCIEPORTBUS
+ help
+ Say Y here to enable PCIe controller support on Qualcomm SoCs. The
+ PCIe controller use Designware core plus Qualcomm specific hardware
+ wrappers.
endmenu
--- /dev/null
+++ b/drivers/pci/host/pcie-qcom.c
@@ -0,0 +1,677 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_gpio.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/phy/phy.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "pcie-designware.h"
+
+#define PCIE20_PARF_PHY_CTRL 0x40
+#define PCIE20_PARF_PHY_REFCLK 0x4C
+#define PCIE20_PARF_DBI_BASE_ADDR 0x168
+#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16c
+#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
+
+#define PCIE20_ELBI_SYS_CTRL 0x04
+#define PCIE20_ELBI_SYS_STTS 0x08
+#define XMLH_LINK_UP BIT(10)
+
+#define PCIE20_CAP 0x70
+#define PCIE20_CAP_LINKCTRLSTATUS (PCIE20_CAP + 0x10)
+
+#define PERST_DELAY_MIN_US 1000
+#define PERST_DELAY_MAX_US 1005
+
+#define LINKUP_DELAY_MIN_US 5000
+#define LINKUP_DELAY_MAX_US 5100
+#define LINKUP_RETRIES_COUNT 20
+
+#define PCIE_V0 0 /* apq8064 */
+#define PCIE_V1 1 /* apq8084 */
+
+struct qcom_pcie_resources_v0 {
+ struct clk *iface_clk;
+ struct clk *core_clk;
+ struct clk *phy_clk;
+ struct reset_control *pci_reset;
+ struct reset_control *axi_reset;
+ struct reset_control *ahb_reset;
+ struct reset_control *por_reset;
+ struct reset_control *phy_reset;
+ struct regulator *vdda;
+ struct regulator *vdda_phy;
+ struct regulator *vdda_refclk;
+};
+
+struct qcom_pcie_resources_v1 {
+ struct clk *iface;
+ struct clk *aux;
+ struct clk *master_bus;
+ struct clk *slave_bus;
+ struct reset_control *core;
+ struct regulator *vdda;
+};
+
+union pcie_resources {
+ struct qcom_pcie_resources_v0 v0;
+ struct qcom_pcie_resources_v1 v1;
+};
+
+struct qcom_pcie {
+ struct pcie_port pp;
+ struct device *dev;
+ union pcie_resources res;
+ void __iomem *parf;
+ void __iomem *dbi;
+ void __iomem *elbi;
+ struct phy *phy;
+ struct gpio_desc *reset;
+ unsigned int version;
+};
+
+#define to_qcom_pcie(x) container_of(x, struct qcom_pcie, pp)
+
+static inline void
+writel_masked(void __iomem *addr, u32 clear_mask, u32 set_mask)
+{
+ u32 val = readl(addr);
+
+ val &= ~clear_mask;
+ val |= set_mask;
+ writel(val, addr);
+}
+
+static void qcom_ep_reset_assert_deassert(struct qcom_pcie *pcie, int assert)
+{
+ int val, active_low;
+
+ if (IS_ERR_OR_NULL(pcie->reset))
+ return;
+
+ active_low = gpiod_is_active_low(pcie->reset);
+
+ if (assert)
+ val = !!active_low;
+ else
+ val = !active_low;
+
+ gpiod_set_value(pcie->reset, val);
+
+ usleep_range(PERST_DELAY_MIN_US, PERST_DELAY_MAX_US);
+}
+
+static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
+{
+ qcom_ep_reset_assert_deassert(pcie, 1);
+}
+
+static void qcom_ep_reset_deassert(struct qcom_pcie *pcie)
+{
+ qcom_ep_reset_assert_deassert(pcie, 0);
+}
+
+static irqreturn_t qcom_pcie_msi_irq_handler(int irq, void *arg)
+{
+ struct pcie_port *pp = arg;
+
+ return dw_handle_msi_irq(pp);
+}
+
+static int qcom_pcie_link_up(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ u32 val = readl(pcie->dbi + PCIE20_CAP_LINKCTRLSTATUS);
+
+ return val & BIT(29) ? 1 : 0;
+}
+
+static void qcom_pcie_disable_resources_v0(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+
+ reset_control_assert(res->pci_reset);
+ reset_control_assert(res->axi_reset);
+ reset_control_assert(res->ahb_reset);
+ reset_control_assert(res->por_reset);
+ reset_control_assert(res->pci_reset);
+ clk_disable_unprepare(res->iface_clk);
+ clk_disable_unprepare(res->core_clk);
+ clk_disable_unprepare(res->phy_clk);
+ regulator_disable(res->vdda);
+ regulator_disable(res->vdda_phy);
+ regulator_disable(res->vdda_refclk);
+}
+
+static void qcom_pcie_disable_resources_v1(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
+
+ reset_control_assert(res->core);
+ clk_disable_unprepare(res->slave_bus);
+ clk_disable_unprepare(res->master_bus);
+ clk_disable_unprepare(res->iface);
+ clk_disable_unprepare(res->aux);
+ regulator_disable(res->vdda);
+}
+
+static int qcom_pcie_enable_resources_v0(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+ struct device *dev = pcie->dev;
+ int ret;
+
+ ret = regulator_enable(res->vdda);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda regulator\n");
+ return ret;
+ }
+
+ ret = regulator_enable(res->vdda_refclk);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda_refclk regulator\n");
+ goto err_refclk;
+ }
+
+ ret = regulator_enable(res->vdda_phy);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda_phy regulator\n");
+ goto err_vdda_phy;
+ }
+
+ ret = clk_prepare_enable(res->iface_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable iface clock\n");
+ goto err_iface;
+ }
+
+ ret = clk_prepare_enable(res->core_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable core clock\n");
+ goto err_clk_core;
+ }
+
+ ret = clk_prepare_enable(res->phy_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable phy clock\n");
+ goto err_clk_phy;
+ }
+
+ ret = reset_control_deassert(res->ahb_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert ahb reset\n");
+ goto err_reset_ahb;
+ }
+
+ return 0;
+
+err_reset_ahb:
+ clk_disable_unprepare(res->phy_clk);
+err_clk_phy:
+ clk_disable_unprepare(res->core_clk);
+err_clk_core:
+ clk_disable_unprepare(res->iface_clk);
+err_iface:
+ regulator_disable(res->vdda_phy);
+err_vdda_phy:
+ regulator_disable(res->vdda_refclk);
+err_refclk:
+ regulator_disable(res->vdda);
+ return ret;
+}
+
+static int qcom_pcie_enable_resources_v1(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
+ struct device *dev = pcie->dev;
+ int ret;
+
+ ret = reset_control_deassert(res->core);
+ if (ret) {
+ dev_err(dev, "cannot deassert core reset\n");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(res->aux);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable aux clock\n");
+ goto err_res;
+ }
+
+ ret = clk_prepare_enable(res->iface);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable iface clock\n");
+ goto err_aux;
+ }
+
+ ret = clk_prepare_enable(res->master_bus);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable master_bus clock\n");
+ goto err_iface;
+ }
+
+ ret = clk_prepare_enable(res->slave_bus);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable slave_bus clock\n");
+ goto err_master;
+ }
+
+ ret = regulator_enable(res->vdda);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda regulator\n");
+ goto err_slave;
+ }
+
+ return 0;
+
+err_slave:
+ clk_disable_unprepare(res->slave_bus);
+err_master:
+ clk_disable_unprepare(res->master_bus);
+err_iface:
+ clk_disable_unprepare(res->iface);
+err_aux:
+ clk_disable_unprepare(res->aux);
+err_res:
+ reset_control_assert(res->core);
+
+ return ret;
+}
+
+static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+ struct device *dev = pcie->dev;
+
+ res->vdda = devm_regulator_get(dev, "vdda");
+ if (IS_ERR(res->vdda))
+ return PTR_ERR(res->vdda);
+
+ res->vdda_phy = devm_regulator_get(dev, "vdda_phy");
+ if (IS_ERR(res->vdda_phy))
+ return PTR_ERR(res->vdda_phy);
+
+ res->vdda_refclk = devm_regulator_get(dev, "vdda_refclk");
+ if (IS_ERR(res->vdda_refclk))
+ return PTR_ERR(res->vdda_refclk);
+
+ res->iface_clk = devm_clk_get(dev, "iface");
+ if (IS_ERR(res->iface_clk))
+ return PTR_ERR(res->iface_clk);
+
+ res->core_clk = devm_clk_get(dev, "core");
+ if (IS_ERR(res->core_clk))
+ return PTR_ERR(res->core_clk);
+
+ res->phy_clk = devm_clk_get(dev, "phy");
+ if (IS_ERR(res->phy_clk))
+ return PTR_ERR(res->phy_clk);
+
+ res->pci_reset = devm_reset_control_get(dev, "pci");
+ if (IS_ERR(res->pci_reset))
+ return PTR_ERR(res->pci_reset);
+
+ res->axi_reset = devm_reset_control_get(dev, "axi");
+ if (IS_ERR(res->axi_reset))
+ return PTR_ERR(res->axi_reset);
+
+ res->ahb_reset = devm_reset_control_get(dev, "ahb");
+ if (IS_ERR(res->ahb_reset))
+ return PTR_ERR(res->ahb_reset);
+
+ res->por_reset = devm_reset_control_get(dev, "por");
+ if (IS_ERR(res->por_reset))
+ return PTR_ERR(res->por_reset);
+
+ res->phy_reset = devm_reset_control_get(dev, "phy");
+ if (IS_ERR(res->phy_reset))
+ return PTR_ERR(res->phy_reset);
+
+ return 0;
+}
+
+static int qcom_pcie_get_resources_v1(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
+ struct device *dev = pcie->dev;
+
+ res->vdda = devm_regulator_get(dev, "vdda");
+ if (IS_ERR(res->vdda))
+ return PTR_ERR(res->vdda);
+
+ res->iface = devm_clk_get(dev, "iface");
+ if (IS_ERR(res->iface))
+ return PTR_ERR(res->iface);
+
+ res->aux = devm_clk_get(dev, "aux");
+ if (IS_ERR(res->aux) && PTR_ERR(res->aux) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ else if (IS_ERR(res->aux))
+ res->aux = NULL;
+
+ res->master_bus = devm_clk_get(dev, "master_bus");
+ if (IS_ERR(res->master_bus))
+ return PTR_ERR(res->master_bus);
+
+ res->slave_bus = devm_clk_get(dev, "slave_bus");
+ if (IS_ERR(res->slave_bus))
+ return PTR_ERR(res->slave_bus);
+
+ res->core = devm_reset_control_get(dev, "core");
+ if (IS_ERR(res->core))
+ return PTR_ERR(res->core);
+
+ return 0;
+}
+
+static int qcom_pcie_enable_link_training(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ struct device *dev = pp->dev;
+ int retries;
+ u32 val;
+
+ /* enable link training */
+ writel_masked(pcie->elbi + PCIE20_ELBI_SYS_CTRL, 0, BIT(0));
+
+ /* wait for up to 100ms for the link to come up */
+ retries = LINKUP_RETRIES_COUNT;
+ do {
+ val = readl(pcie->elbi + PCIE20_ELBI_SYS_STTS);
+ if (val & XMLH_LINK_UP)
+ break;
+ usleep_range(LINKUP_DELAY_MIN_US, LINKUP_DELAY_MAX_US);
+ } while (retries--);
+
+ if (retries < 0 || !dw_pcie_link_up(pp)) {
+ dev_err(dev, "link initialization failed\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static void qcom_pcie_host_init_v1(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ int ret;
+
+ qcom_ep_reset_assert(pcie);
+
+ ret = qcom_pcie_enable_resources_v1(pcie);
+ if (ret)
+ return;
+
+ /* change DBI base address */
+ writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
+
+ if (IS_ENABLED(CONFIG_PCI_MSI))
+ writel_masked(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT,
+ 0, BIT(31));
+
+ ret = phy_init(pcie->phy);
+ if (ret)
+ goto err_res;
+
+ ret = phy_power_on(pcie->phy);
+ if (ret)
+ goto err_phy;
+
+ dw_pcie_setup_rc(pp);
+
+ if (IS_ENABLED(CONFIG_PCI_MSI))
+ dw_pcie_msi_init(pp);
+
+ qcom_ep_reset_deassert(pcie);
+
+ ret = qcom_pcie_enable_link_training(pp);
+ if (ret)
+ goto err;
+
+ return;
+
+err:
+ qcom_ep_reset_assert(pcie);
+ phy_power_off(pcie->phy);
+err_phy:
+ phy_exit(pcie->phy);
+err_res:
+ qcom_pcie_disable_resources_v1(pcie);
+}
+
+static void qcom_pcie_host_init_v0(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+ struct device *dev = pcie->dev;
+ int ret;
+
+ qcom_ep_reset_assert(pcie);
+
+ ret = qcom_pcie_enable_resources_v0(pcie);
+ if (ret)
+ return;
+
+ writel_masked(pcie->parf + PCIE20_PARF_PHY_CTRL, BIT(0), 0);
+
+ /* enable external reference clock */
+ writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK, 0, BIT(16));
+
+ ret = reset_control_deassert(res->phy_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert phy reset\n");
+ return;
+ }
+
+ ret = reset_control_deassert(res->pci_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert pci reset\n");
+ return;
+ }
+
+ ret = reset_control_deassert(res->por_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert por reset\n");
+ return;
+ }
+
+ ret = reset_control_deassert(res->axi_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert axi reset\n");
+ return;
+ }
+
+ /* wait 150ms for clock acquisition */
+ usleep_range(10000, 15000);
+
+ dw_pcie_setup_rc(pp);
+
+ if (IS_ENABLED(CONFIG_PCI_MSI))
+ dw_pcie_msi_init(pp);
+
+ qcom_ep_reset_deassert(pcie);
+
+ ret = qcom_pcie_enable_link_training(pp);
+ if (ret)
+ goto err;
+
+ return;
+err:
+ qcom_ep_reset_assert(pcie);
+ qcom_pcie_disable_resources_v0(pcie);
+}
+
+static void qcom_pcie_host_init(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+
+ if (pcie->version == PCIE_V0)
+ return qcom_pcie_host_init_v0(pp);
+ else
+ return qcom_pcie_host_init_v1(pp);
+}
+
+static int
+qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size, u32 *val)
+{
+ /* the device class is not reported correctly from the register */
+ if (where == PCI_CLASS_REVISION && size == 4) {
+ *val = readl(pp->dbi_base + PCI_CLASS_REVISION);
+ *val &= ~(0xffff << 16);
+ *val |= PCI_CLASS_BRIDGE_PCI << 16;
+ return PCIBIOS_SUCCESSFUL;
+ }
+
+ return dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where,
+ size, val);
+}
+
+static struct pcie_host_ops qcom_pcie_ops = {
+ .link_up = qcom_pcie_link_up,
+ .host_init = qcom_pcie_host_init,
+ .rd_own_conf = qcom_pcie_rd_own_conf,
+};
+
+static const struct of_device_id qcom_pcie_match[] = {
+ { .compatible = "qcom,pcie-v0", .data = (void *)PCIE_V0 },
+ { .compatible = "qcom,pcie-v1", .data = (void *)PCIE_V1 },
+ { }
+};
+
+static int qcom_pcie_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *match;
+ struct resource *res;
+ struct qcom_pcie *pcie;
+ struct pcie_port *pp;
+ int ret;
+
+ match = of_match_node(qcom_pcie_match, dev->of_node);
+ if (!match)
+ return -ENXIO;
+
+ pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
+ if (!pcie)
+ return -ENOMEM;
+
+ pcie->version = (unsigned int)match->data;
+
+ pcie->reset = devm_gpiod_get_optional(dev, "perst");
+ if (IS_ERR(pcie->reset) && PTR_ERR(pcie->reset) == -EPROBE_DEFER)
+ return PTR_ERR(pcie->reset);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
+ pcie->parf = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pcie->parf))
+ return PTR_ERR(pcie->parf);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
+ pcie->dbi = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pcie->dbi))
+ return PTR_ERR(pcie->dbi);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
+ pcie->elbi = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pcie->elbi))
+ return PTR_ERR(pcie->elbi);
+
+ pcie->phy = devm_phy_optional_get(dev, "pciephy");
+ if (IS_ERR(pcie->phy))
+ return PTR_ERR(pcie->phy);
+
+ pcie->dev = dev;
+
+ if (pcie->version == PCIE_V0)
+ ret = qcom_pcie_get_resources_v0(pcie);
+ else
+ ret = qcom_pcie_get_resources_v1(pcie);
+
+ if (ret)
+ return ret;
+
+ pp = &pcie->pp;
+ pp->dev = dev;
+ pp->dbi_base = pcie->dbi;
+ pp->root_bus_nr = -1;
+ pp->ops = &qcom_pcie_ops;
+
+ if (IS_ENABLED(CONFIG_PCI_MSI)) {
+ pp->msi_irq = platform_get_irq_byname(pdev, "msi");
+ if (pp->msi_irq < 0) {
+ dev_err(dev, "cannot get msi irq\n");
+ return pp->msi_irq;
+ }
+
+ ret = devm_request_irq(dev, pp->msi_irq,
+ qcom_pcie_msi_irq_handler,
+ IRQF_SHARED, "qcom-pcie-msi", pp);
+ if (ret) {
+ dev_err(dev, "cannot request msi irq\n");
+ return ret;
+ }
+ }
+
+ ret = dw_pcie_host_init(pp);
+ if (ret) {
+ dev_err(dev, "cannot initialize host\n");
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, pcie);
+
+ return 0;
+}
+
+static int qcom_pcie_remove(struct platform_device *pdev)
+{
+ struct qcom_pcie *pcie = platform_get_drvdata(pdev);
+
+ qcom_ep_reset_assert(pcie);
+ phy_power_off(pcie->phy);
+ phy_exit(pcie->phy);
+ if (pcie->version == PCIE_V0)
+ qcom_pcie_disable_resources_v0(pcie);
+ else
+ qcom_pcie_disable_resources_v1(pcie);
+
+ return 0;
+}
+
+static struct platform_driver qcom_pcie_driver = {
+ .probe = qcom_pcie_probe,
+ .remove = qcom_pcie_remove,
+ .driver = {
+ .name = "qcom-pcie",
+ .of_match_table = qcom_pcie_match,
+ },
+};
+
+module_platform_driver(qcom_pcie_driver);
+
+MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
+MODULE_DESCRIPTION("Qualcomm PCIe root complex driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:qcom-pcie");
--- a/drivers/pci/host/Makefile
+++ b/drivers/pci/host/Makefile
@@ -11,3 +11,4 @@ obj-$(CONFIG_PCIE_SPEAR13XX) += pcie-spe
obj-$(CONFIG_PCI_KEYSTONE) += pci-keystone-dw.o pci-keystone.o
obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx.o
obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
+obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o

268
target/linux/ipq806x/patches-3.18/112-ARM-dts-qcom-add-pcie-nodes-to-ipq806x-platforms.patch Normal file
View File

@ -0,0 +1,268 @@
From 5b40516b2f5fb9b2a7d6d3e2e924f12ec9d183a8 Mon Sep 17 00:00:00 2001
From: Mathieu Olivari <mathieu@codeaurora.org>
Date: Tue, 21 Apr 2015 19:01:42 -0700
Subject: [PATCH 8/9] ARM: dts: qcom: add pcie nodes to ipq806x platforms
qcom-pcie driver now supports version 0 of the controller. This change
adds the corresponding entries to the IPQ806x dtsi file and
corresponding platform (AP148).
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
---
arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 30 ++++++++
arch/arm/boot/dts/qcom-ipq8064.dtsi | 124 +++++++++++++++++++++++++++++++
2 files changed, 154 insertions(+)
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
@@ -30,6 +30,22 @@
bias-disable;
};
+ pcie1_pins: pcie1_pinmux {
+ mux {
+ pins = "gpio3";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
+ pcie2_pins: pcie2_pinmux {
+ mux {
+ pins = "gpio48";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
spi_pins: spi_pins {
mux {
pins = "gpio18", "gpio19", "gpio21";
@@ -136,5 +152,19 @@
usb30@1 {
status = "ok";
};
+
+ pcie0: pci@1b500000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 3 0>;
+ pinctrl-0 = <&pcie1_pins>;
+ pinctrl-names = "default";
+ };
+
+ pcie1: pci@1b700000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 48 0>;
+ pinctrl-0 = <&pcie2_pins>;
+ pinctrl-names = "default";
+ };
};
};
--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
@@ -37,6 +37,30 @@
bias-disable;
};
+ pcie1_pins: pcie1_pinmux {
+ mux {
+ pins = "gpio3";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
+ pcie2_pins: pcie2_pinmux {
+ mux {
+ pins = "gpio48";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
+ pcie3_pins: pcie3_pinmux {
+ mux {
+ pins = "gpio63";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
spi_pins: spi_pins {
mux {
pins = "gpio18", "gpio19", "gpio21";
@@ -153,6 +177,27 @@
status = "ok";
};
+ pcie0: pci@1b500000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 3 0>;
+ pinctrl-0 = <&pcie1_pins>;
+ pinctrl-names = "default";
+ };
+
+ pcie1: pci@1b700000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 48 0>;
+ pinctrl-0 = <&pcie2_pins>;
+ pinctrl-names = "default";
+ };
+
+ pcie2: pci@1b900000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 63 0>;
+ pinctrl-0 = <&pcie3_pins>;
+ pinctrl-names = "default";
+ };
+
mdio0: mdio {
compatible = "virtual,mdio-gpio";
#address-cells = <1>;
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
@@ -3,6 +3,7 @@
#include "skeleton.dtsi"
#include <dt-bindings/clock/qcom,gcc-ipq806x.h>
#include <dt-bindings/soc/qcom,gsbi.h>
+#include <dt-bindings/reset/qcom,gcc-ipq806x.h>
/ {
model = "Qualcomm IPQ8064";
@@ -306,6 +307,129 @@
#reset-cells = <1>;
};
+ pcie0: pci@1b500000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b500000 0x1000
+ 0x1b502000 0x80
+ 0x1b600000 0x100
+ 0x0ff00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* downstream I/O */
+ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* non-prefetchable memory */
+
+ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+ clocks = <&gcc PCIE_A_CLK>,
+ <&gcc PCIE_H_CLK>,
+ <&gcc PCIE_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+
+ resets = <&gcc PCIE_ACLK_RESET>,
+ <&gcc PCIE_HCLK_RESET>,
+ <&gcc PCIE_POR_RESET>,
+ <&gcc PCIE_PCI_RESET>,
+ <&gcc PCIE_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+
+ status = "disabled";
+ };
+
+ pcie1: pci@1b700000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b700000 0x1000
+ 0x1b702000 0x80
+ 0x1b800000 0x100
+ 0x31f00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <1>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ ranges = <0x81000000 0 0 0x31e00000 0 0x00100000 /* downstream I/O */
+ 0x82000000 0 0x00000000 0x2e000000 0 0x03e00000>; /* non-prefetchable memory */
+
+ interrupts = <GIC_SPI 57 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 58 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 59 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 60 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 61 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+ clocks = <&gcc PCIE_1_A_CLK>,
+ <&gcc PCIE_1_H_CLK>,
+ <&gcc PCIE_1_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+
+ resets = <&gcc PCIE_1_ACLK_RESET>,
+ <&gcc PCIE_1_HCLK_RESET>,
+ <&gcc PCIE_1_POR_RESET>,
+ <&gcc PCIE_1_PCI_RESET>,
+ <&gcc PCIE_1_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+
+ status = "disabled";
+ };
+
+ pcie2: pci@1b900000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b900000 0x1000
+ 0x1b902000 0x80
+ 0x1ba00000 0x100
+ 0x35f00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <2>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ ranges = <0x81000000 0 0 0x35e00000 0 0x00100000 /* downstream I/O */
+ 0x82000000 0 0x00000000 0x32000000 0 0x03e00000>; /* non-prefetchable memory */
+
+ interrupts = <GIC_SPI 71 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 72 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 73 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 74 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 75 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+ clocks = <&gcc PCIE_2_A_CLK>,
+ <&gcc PCIE_2_H_CLK>,
+ <&gcc PCIE_2_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+
+ resets = <&gcc PCIE_2_ACLK_RESET>,
+ <&gcc PCIE_2_HCLK_RESET>,
+ <&gcc PCIE_2_POR_RESET>,
+ <&gcc PCIE_2_PCI_RESET>,
+ <&gcc PCIE_2_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+
+ status = "disabled";
+ };
+
hs_phy_1: phy@100f8800 {
compatible = "qcom,dwc3-hs-usb-phy";
reg = <0x100f8800 0x30>;
@@ -389,6 +513,5 @@
dr_mode = "host";
};
};
-
};
};

29
target/linux/ipq806x/patches-3.18/113-ARM-qcom-automatically-select-PCI_DOMAINS-if-PCI-is-.patch Normal file
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@ -0,0 +1,29 @@
From f004aa1dec6e2e206be025de15b115d60f2b21e3 Mon Sep 17 00:00:00 2001
From: Mathieu Olivari <mathieu@codeaurora.org>
Date: Tue, 21 Apr 2015 19:09:07 -0700
Subject: [PATCH 9/9] ARM: qcom: automatically select PCI_DOMAINS if PCI is
enabled
If multiple PCIe devices are present in the system, the kernel will
panic at boot time when trying to scan the PCI buses. This happens on
IPQ806x based platforms, which has 3 PCIe ports.
Enabling this option allows the kernel to assign the pci-domains
according to the device-tree content. This allows multiple PCIe
controllers to coexist in the system.
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
---
arch/arm/mach-qcom/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm/mach-qcom/Kconfig
+++ b/arch/arm/mach-qcom/Kconfig
@@ -6,6 +6,7 @@ menuconfig ARCH_QCOM
select CLKSRC_OF
select PINCTRL
select QCOM_SCM if SMP
+ select PCI_DOMAINS if PCI
help
Support for Qualcomm's devicetree based systems.

19
target/linux/ipq806x/patches-3.18/700-add-gmac-dts-suport.patch
View File

@ -16,7 +16,7 @@
i2c4_pins: i2c4_pinmux {
pins = "gpio12", "gpio13";
function = "gsbi4";
@@ -38,6 +45,25 @@
@@ -54,6 +61,25 @@
bias-none;
};
};
@ -42,7 +42,7 @@
};
gsbi@16300000 {
@@ -76,6 +102,7 @@
@@ -92,6 +118,7 @@
#size-cells = <1>;
spi-max-frequency = <50000000>;
reg = <0>;
@ -50,9 +50,9 @@
partition@0 {
label = "lowlevel_init";
@@ -136,5 +163,66 @@
usb30@1 {
status = "ok";
@@ -166,5 +193,66 @@
pinctrl-0 = <&pcie2_pins>;
pinctrl-names = "default";
};
+
+ mdio0: mdio {
@ -119,18 +119,19 @@
};
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
@@ -3,6 +3,7 @@
#include "skeleton.dtsi"
@@ -4,6 +4,7 @@
#include <dt-bindings/clock/qcom,gcc-ipq806x.h>
#include <dt-bindings/soc/qcom,gsbi.h>
#include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
/ {
model = "Qualcomm IPQ8064";
@@ -390,5 +391,41 @@
@@ -513,5 +514,42 @@
dr_mode = "host";
};
};
+
+ nss-gmac-common {
+ reg = <0x03000000 0x0000FFFF 0x1bb00000 0x0000FFFF 0x00900000 0x00004000>;
+ reg-names = "nss_reg_base" , "qsgmii_reg_base", "clk_ctl_base";

266
target/linux/ipq806x/patches-4.0/110-DT-PCI-qcom-Document-PCIe-devicetree-bindings.patch Normal file
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@ -0,0 +1,266 @@
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [v2,3/5] DT: PCI: qcom: Document PCIe devicetree bindings
From: Stanimir Varbanov <svarbanov@mm-sol.com>
X-Patchwork-Id: 6326181
Message-Id: <1430743338-10441-4-git-send-email-svarbanov@mm-sol.com>
To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
Mark Rutland <mark.rutland@arm.com>,
Grant Likely <grant.likely@linaro.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Stanimir Varbanov <svarbanov@mm-sol.com>
Date: Mon, 4 May 2015 15:42:16 +0300
Document Qualcomm PCIe driver devicetree bindings.
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
---
.../devicetree/bindings/pci/qcom,pcie.txt | 231 ++++++++++++++++++++
1 files changed, 231 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pci/qcom,pcie.txt
diff --git a/Documentation/devicetree/bindings/pci/qcom,pcie.txt b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
new file mode 100644
index 0000000..dcf7348
--- /dev/null
+++ b/Documentation/devicetree/bindings/pci/qcom,pcie.txt
@@ -0,0 +1,231 @@
+* Qualcomm PCI express root complex
+
+- compatible:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Value shall include
+ - "qcom,pcie-v0" for apq/ipq8064
+ - "qcom,pcie-v1" for apq8084
+
+- reg:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: Register ranges as listed in the reg-names property
+
+- reg-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Must include the following entries
+ - "parf" Qualcomm specific registers
+ - "dbi" Designware PCIe registers
+ - "elbi" External local bus interface registers
+ - "config" PCIe configuration space
+
+- device_type:
+ Usage: required
+ Value type: <string>
+ Definition: Should be "pci". As specified in designware-pcie.txt
+
+- #address-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be set to 3. As specified in designware-pcie.txt
+
+- #size-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be set 2. As specified in designware-pcie.txt
+
+- ranges:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- interrupts:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: MSI interrupt
+
+- interrupt-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain "msi"
+
+- #interrupt-cells:
+ Usage: required
+ Value type: <u32>
+ Definition: Should be 1. As specified in designware-pcie.txt
+
+- interrupt-map-mask:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- interrupt-map:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: As specified in designware-pcie.txt
+
+- clocks:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and clock specifier pairs as listed
+ in clock-names property
+
+- clock-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ * should be populated for v0 and v1
+ - "iface" Configuration AHB clock
+
+ * should be populated for v0
+ - "core" Clocks the pcie hw block
+ - "phy" Clocks the pcie PHY block
+
+ * should be populated for v1
+ - "aux" Auxiliary (AUX) clock
+ - "bus_master" Master AXI clock
+ - "bus_slave" Slave AXI clock
+
+- resets:
+ Usage: required
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and reset specifier pairs as listed
+ in reset-names property
+
+- reset-names:
+ Usage: required
+ Value type: <stringlist>
+ Definition: Should contain the following entries
+ * should be populated for v0
+ - "axi" AXI reset
+ - "ahb" AHB reset
+ - "por" POR reset
+ - "pci" PCI reset
+ - "phy" PHY reset
+
+ * should be populated for v1
+ - "core" Core reset
+
+- power-domains:
+ Usage: required (for v1 only)
+ Value type: <prop-encoded-array>
+ Definition: A phandle and power domain specifier pair to the
+ power domain which is responsible for collapsing
+ and restoring power to the peripheral
+
+- <name>-supply:
+ Usage: required
+ Value type: <phandle>
+ Definition: List of phandles to the power supply regulator(s)
+ * should be populated for v0 and v1
+ - "vdda" core analog power supply
+
+ * should be populated for v0
+ - "vdda_phy" analog power supply for PHY
+ - "vdda_refclk" analog power supply for IC which generate
+ reference clock
+
+- phys:
+ Usage: required (for v1 only)
+ Value type: <phandle>
+ Definition: List of phandle(s) as listed in phy-names property
+
+- phy-names:
+ Usage: required (for v1 only)
+ Value type: <stringlist>
+ Definition: Should contain "pciephy"
+
+- <name>-gpio:
+ Usage: optional
+ Value type: <prop-encoded-array>
+ Definition: List of phandle and gpio specifier pairs. Should contain
+ - "perst" PCIe endpoint reset signal line
+ - "pewake" PCIe endpoint wake signal line
+
+- pinctrl-0:
+ Usage: required
+ Value type: <phandle>
+ Definition: List of phandles pointing at a pin(s) configuration
+
+- pinctrl-names
+ Usage: required
+ Value type: <stringlist>
+ Definition: List of names of pinctrl-0 state
+
+* Example for v0
+ pcie0: pci@1b500000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b500000 0x1000
+ 0x1b502000 0x80
+ 0x1b600000 0x100
+ 0x0ff00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* I/O */
+ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* memory */
+ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+ clocks = <&gcc PCIE_A_CLK>,
+ <&gcc PCIE_H_CLK>,
+ <&gcc PCIE_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+ resets = <&gcc PCIE_ACLK_RESET>,
+ <&gcc PCIE_HCLK_RESET>,
+ <&gcc PCIE_POR_RESET>,
+ <&gcc PCIE_PCI_RESET>,
+ <&gcc PCIE_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+ };
+
+* Example for v1
+ pcie0@fc520000 {
+ compatible = "qcom,pcie-v1";
+ reg = <0xfc520000 0x2000>,
+ <0xff000000 0x1000>,
+ <0xff001000 0x1000>,
+ <0xff002000 0x2000>;
+ reg-names = "parf", "dbi", "elbi", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+ ranges = <0x81000000 0 0 0xff200000 0 0x00100000 /* I/O */
+ 0x82000000 0 0x00300000 0xff300000 0 0x00d00000>; /* memory */
+ interrupts = <GIC_SPI 243 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 244 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 245 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 247 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 248 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+ clocks = <&gcc GCC_PCIE_0_CFG_AHB_CLK>,
+ <&gcc GCC_PCIE_0_MSTR_AXI_CLK>,
+ <&gcc GCC_PCIE_0_SLV_AXI_CLK>,
+ <&gcc GCC_PCIE_0_AUX_CLK>;
+ clock-names = "iface", "master_bus", "slave_bus", "aux";
+ resets = <&gcc GCC_PCIE_0_BCR>;
+ reset-names = "core";
+ power-domains = <&gcc PCIE0_GDSC>;
+ vdda-supply = <&pma8084_l3>;
+ phys = <&pciephy0>;
+ phy-names = "pciephy";
+ perst-gpio = <&tlmm 70 GPIO_ACTIVE_LOW>;
+ pinctrl-0 = <&pcie0_pins_default>;
+ pinctrl-names = "default";
+ };

753
target/linux/ipq806x/patches-4.0/111-PCI-qcom-Add-Qualcomm-PCIe-controller-driver.patch Normal file
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@ -0,0 +1,753 @@
Content-Type: text/plain; charset="utf-8"
MIME-Version: 1.0
Content-Transfer-Encoding: 7bit
Subject: [v2,4/5] PCI: qcom: Add Qualcomm PCIe controller driver
From: Stanimir Varbanov <svarbanov@mm-sol.com>
X-Patchwork-Id: 6326161
Message-Id: <1430743338-10441-5-git-send-email-svarbanov@mm-sol.com>
To: Rob Herring <robh+dt@kernel.org>, Kumar Gala <galak@codeaurora.org>,
Mark Rutland <mark.rutland@arm.com>,
Grant Likely <grant.likely@linaro.org>,
Bjorn Helgaas <bhelgaas@google.com>,
Kishon Vijay Abraham I <kishon@ti.com>,
Russell King <linux@arm.linux.org.uk>, Arnd Bergmann <arnd@arndb.de>
Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-pci@vger.kernel.org, Mathieu Olivari <mathieu@codeaurora.org>,
Srinivas Kandagatla <srinivas.kandagatla@linaro.org>,
Stanimir Varbanov <svarbanov@mm-sol.com>
Date: Mon, 4 May 2015 15:42:17 +0300
The PCIe driver reuse the Designware common code for host
and MSI initialization, and also program the Qualcomm
application specific registers.
Signed-off-by: Stanimir Varbanov <svarbanov@mm-sol.com>
---
MAINTAINERS | 7 +
drivers/pci/host/Kconfig | 9 +
drivers/pci/host/Makefile | 1 +
drivers/pci/host/pcie-qcom.c | 677 ++++++++++++++++++++++++++++++++++++++++++
4 files changed, 694 insertions(+), 0 deletions(-)
create mode 100644 drivers/pci/host/pcie-qcom.c
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7511,6 +7511,13 @@ L: linux-pci@vger.kernel.org
S: Maintained
F: drivers/pci/host/*spear*
+PCIE DRIVER FOR QUALCOMM MSM
+M: Stanimir Varbanov <svarbanov@mm-sol.com>
+L: linux-pci@vger.kernel.org
+L: linux-arm-msm@vger.kernel.org
+S: Maintained
+F: drivers/pci/host/*qcom*
+
PCMCIA SUBSYSTEM
P: Linux PCMCIA Team
L: linux-pcmcia@lists.infradead.org
--- a/drivers/pci/host/Kconfig
+++ b/drivers/pci/host/Kconfig
@@ -106,4 +106,13 @@ config PCI_VERSATILE
bool "ARM Versatile PB PCI controller"
depends on ARCH_VERSATILE
+config PCIE_QCOM
+ bool "Qualcomm PCIe controller"
+ depends on ARCH_QCOM && OF || (ARM && COMPILE_TEST)
+ select PCIE_DW
+ select PCIEPORTBUS
+ help
+ Say Y here to enable PCIe controller support on Qualcomm SoCs. The
+ PCIe controller use Designware core plus Qualcomm specific hardware
+ wrappers.
endmenu
--- /dev/null
+++ b/drivers/pci/host/pcie-qcom.c
@@ -0,0 +1,677 @@
+/*
+ * Copyright (c) 2014, The Linux Foundation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ */
+
+#include <linux/clk.h>
+#include <linux/delay.h>
+#include <linux/gpio.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of_gpio.h>
+#include <linux/pci.h>
+#include <linux/platform_device.h>
+#include <linux/phy/phy.h>
+#include <linux/regulator/consumer.h>
+#include <linux/reset.h>
+#include <linux/slab.h>
+#include <linux/types.h>
+
+#include "pcie-designware.h"
+
+#define PCIE20_PARF_PHY_CTRL 0x40
+#define PCIE20_PARF_PHY_REFCLK 0x4C
+#define PCIE20_PARF_DBI_BASE_ADDR 0x168
+#define PCIE20_PARF_SLV_ADDR_SPACE_SIZE 0x16c
+#define PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT 0x178
+
+#define PCIE20_ELBI_SYS_CTRL 0x04
+#define PCIE20_ELBI_SYS_STTS 0x08
+#define XMLH_LINK_UP BIT(10)
+
+#define PCIE20_CAP 0x70
+#define PCIE20_CAP_LINKCTRLSTATUS (PCIE20_CAP + 0x10)
+
+#define PERST_DELAY_MIN_US 1000
+#define PERST_DELAY_MAX_US 1005
+
+#define LINKUP_DELAY_MIN_US 5000
+#define LINKUP_DELAY_MAX_US 5100
+#define LINKUP_RETRIES_COUNT 20
+
+#define PCIE_V0 0 /* apq8064 */
+#define PCIE_V1 1 /* apq8084 */
+
+struct qcom_pcie_resources_v0 {
+ struct clk *iface_clk;
+ struct clk *core_clk;
+ struct clk *phy_clk;
+ struct reset_control *pci_reset;
+ struct reset_control *axi_reset;
+ struct reset_control *ahb_reset;
+ struct reset_control *por_reset;
+ struct reset_control *phy_reset;
+ struct regulator *vdda;
+ struct regulator *vdda_phy;
+ struct regulator *vdda_refclk;
+};
+
+struct qcom_pcie_resources_v1 {
+ struct clk *iface;
+ struct clk *aux;
+ struct clk *master_bus;
+ struct clk *slave_bus;
+ struct reset_control *core;
+ struct regulator *vdda;
+};
+
+union pcie_resources {
+ struct qcom_pcie_resources_v0 v0;
+ struct qcom_pcie_resources_v1 v1;
+};
+
+struct qcom_pcie {
+ struct pcie_port pp;
+ struct device *dev;
+ union pcie_resources res;
+ void __iomem *parf;
+ void __iomem *dbi;
+ void __iomem *elbi;
+ struct phy *phy;
+ struct gpio_desc *reset;
+ unsigned int version;
+};
+
+#define to_qcom_pcie(x) container_of(x, struct qcom_pcie, pp)
+
+static inline void
+writel_masked(void __iomem *addr, u32 clear_mask, u32 set_mask)
+{
+ u32 val = readl(addr);
+
+ val &= ~clear_mask;
+ val |= set_mask;
+ writel(val, addr);
+}
+
+static void qcom_ep_reset_assert_deassert(struct qcom_pcie *pcie, int assert)
+{
+ int val, active_low;
+
+ if (IS_ERR_OR_NULL(pcie->reset))
+ return;
+
+ active_low = gpiod_is_active_low(pcie->reset);
+
+ if (assert)
+ val = !!active_low;
+ else
+ val = !active_low;
+
+ gpiod_set_value(pcie->reset, val);
+
+ usleep_range(PERST_DELAY_MIN_US, PERST_DELAY_MAX_US);
+}
+
+static void qcom_ep_reset_assert(struct qcom_pcie *pcie)
+{
+ qcom_ep_reset_assert_deassert(pcie, 1);
+}
+
+static void qcom_ep_reset_deassert(struct qcom_pcie *pcie)
+{
+ qcom_ep_reset_assert_deassert(pcie, 0);
+}
+
+static irqreturn_t qcom_pcie_msi_irq_handler(int irq, void *arg)
+{
+ struct pcie_port *pp = arg;
+
+ return dw_handle_msi_irq(pp);
+}
+
+static int qcom_pcie_link_up(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ u32 val = readl(pcie->dbi + PCIE20_CAP_LINKCTRLSTATUS);
+
+ return val & BIT(29) ? 1 : 0;
+}
+
+static void qcom_pcie_disable_resources_v0(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+
+ reset_control_assert(res->pci_reset);
+ reset_control_assert(res->axi_reset);
+ reset_control_assert(res->ahb_reset);
+ reset_control_assert(res->por_reset);
+ reset_control_assert(res->pci_reset);
+ clk_disable_unprepare(res->iface_clk);
+ clk_disable_unprepare(res->core_clk);
+ clk_disable_unprepare(res->phy_clk);
+ regulator_disable(res->vdda);
+ regulator_disable(res->vdda_phy);
+ regulator_disable(res->vdda_refclk);
+}
+
+static void qcom_pcie_disable_resources_v1(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
+
+ reset_control_assert(res->core);
+ clk_disable_unprepare(res->slave_bus);
+ clk_disable_unprepare(res->master_bus);
+ clk_disable_unprepare(res->iface);
+ clk_disable_unprepare(res->aux);
+ regulator_disable(res->vdda);
+}
+
+static int qcom_pcie_enable_resources_v0(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+ struct device *dev = pcie->dev;
+ int ret;
+
+ ret = regulator_enable(res->vdda);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda regulator\n");
+ return ret;
+ }
+
+ ret = regulator_enable(res->vdda_refclk);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda_refclk regulator\n");
+ goto err_refclk;
+ }
+
+ ret = regulator_enable(res->vdda_phy);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda_phy regulator\n");
+ goto err_vdda_phy;
+ }
+
+ ret = clk_prepare_enable(res->iface_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable iface clock\n");
+ goto err_iface;
+ }
+
+ ret = clk_prepare_enable(res->core_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable core clock\n");
+ goto err_clk_core;
+ }
+
+ ret = clk_prepare_enable(res->phy_clk);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable phy clock\n");
+ goto err_clk_phy;
+ }
+
+ ret = reset_control_deassert(res->ahb_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert ahb reset\n");
+ goto err_reset_ahb;
+ }
+
+ return 0;
+
+err_reset_ahb:
+ clk_disable_unprepare(res->phy_clk);
+err_clk_phy:
+ clk_disable_unprepare(res->core_clk);
+err_clk_core:
+ clk_disable_unprepare(res->iface_clk);
+err_iface:
+ regulator_disable(res->vdda_phy);
+err_vdda_phy:
+ regulator_disable(res->vdda_refclk);
+err_refclk:
+ regulator_disable(res->vdda);
+ return ret;
+}
+
+static int qcom_pcie_enable_resources_v1(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
+ struct device *dev = pcie->dev;
+ int ret;
+
+ ret = reset_control_deassert(res->core);
+ if (ret) {
+ dev_err(dev, "cannot deassert core reset\n");
+ return ret;
+ }
+
+ ret = clk_prepare_enable(res->aux);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable aux clock\n");
+ goto err_res;
+ }
+
+ ret = clk_prepare_enable(res->iface);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable iface clock\n");
+ goto err_aux;
+ }
+
+ ret = clk_prepare_enable(res->master_bus);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable master_bus clock\n");
+ goto err_iface;
+ }
+
+ ret = clk_prepare_enable(res->slave_bus);
+ if (ret) {
+ dev_err(dev, "cannot prepare/enable slave_bus clock\n");
+ goto err_master;
+ }
+
+ ret = regulator_enable(res->vdda);
+ if (ret) {
+ dev_err(dev, "cannot enable vdda regulator\n");
+ goto err_slave;
+ }
+
+ return 0;
+
+err_slave:
+ clk_disable_unprepare(res->slave_bus);
+err_master:
+ clk_disable_unprepare(res->master_bus);
+err_iface:
+ clk_disable_unprepare(res->iface);
+err_aux:
+ clk_disable_unprepare(res->aux);
+err_res:
+ reset_control_assert(res->core);
+
+ return ret;
+}
+
+static int qcom_pcie_get_resources_v0(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+ struct device *dev = pcie->dev;
+
+ res->vdda = devm_regulator_get(dev, "vdda");
+ if (IS_ERR(res->vdda))
+ return PTR_ERR(res->vdda);
+
+ res->vdda_phy = devm_regulator_get(dev, "vdda_phy");
+ if (IS_ERR(res->vdda_phy))
+ return PTR_ERR(res->vdda_phy);
+
+ res->vdda_refclk = devm_regulator_get(dev, "vdda_refclk");
+ if (IS_ERR(res->vdda_refclk))
+ return PTR_ERR(res->vdda_refclk);
+
+ res->iface_clk = devm_clk_get(dev, "iface");
+ if (IS_ERR(res->iface_clk))
+ return PTR_ERR(res->iface_clk);
+
+ res->core_clk = devm_clk_get(dev, "core");
+ if (IS_ERR(res->core_clk))
+ return PTR_ERR(res->core_clk);
+
+ res->phy_clk = devm_clk_get(dev, "phy");
+ if (IS_ERR(res->phy_clk))
+ return PTR_ERR(res->phy_clk);
+
+ res->pci_reset = devm_reset_control_get(dev, "pci");
+ if (IS_ERR(res->pci_reset))
+ return PTR_ERR(res->pci_reset);
+
+ res->axi_reset = devm_reset_control_get(dev, "axi");
+ if (IS_ERR(res->axi_reset))
+ return PTR_ERR(res->axi_reset);
+
+ res->ahb_reset = devm_reset_control_get(dev, "ahb");
+ if (IS_ERR(res->ahb_reset))
+ return PTR_ERR(res->ahb_reset);
+
+ res->por_reset = devm_reset_control_get(dev, "por");
+ if (IS_ERR(res->por_reset))
+ return PTR_ERR(res->por_reset);
+
+ res->phy_reset = devm_reset_control_get(dev, "phy");
+ if (IS_ERR(res->phy_reset))
+ return PTR_ERR(res->phy_reset);
+
+ return 0;
+}
+
+static int qcom_pcie_get_resources_v1(struct qcom_pcie *pcie)
+{
+ struct qcom_pcie_resources_v1 *res = &pcie->res.v1;
+ struct device *dev = pcie->dev;
+
+ res->vdda = devm_regulator_get(dev, "vdda");
+ if (IS_ERR(res->vdda))
+ return PTR_ERR(res->vdda);
+
+ res->iface = devm_clk_get(dev, "iface");
+ if (IS_ERR(res->iface))
+ return PTR_ERR(res->iface);
+
+ res->aux = devm_clk_get(dev, "aux");
+ if (IS_ERR(res->aux) && PTR_ERR(res->aux) == -EPROBE_DEFER)
+ return -EPROBE_DEFER;
+ else if (IS_ERR(res->aux))
+ res->aux = NULL;
+
+ res->master_bus = devm_clk_get(dev, "master_bus");
+ if (IS_ERR(res->master_bus))
+ return PTR_ERR(res->master_bus);
+
+ res->slave_bus = devm_clk_get(dev, "slave_bus");
+ if (IS_ERR(res->slave_bus))
+ return PTR_ERR(res->slave_bus);
+
+ res->core = devm_reset_control_get(dev, "core");
+ if (IS_ERR(res->core))
+ return PTR_ERR(res->core);
+
+ return 0;
+}
+
+static int qcom_pcie_enable_link_training(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ struct device *dev = pp->dev;
+ int retries;
+ u32 val;
+
+ /* enable link training */
+ writel_masked(pcie->elbi + PCIE20_ELBI_SYS_CTRL, 0, BIT(0));
+
+ /* wait for up to 100ms for the link to come up */
+ retries = LINKUP_RETRIES_COUNT;
+ do {
+ val = readl(pcie->elbi + PCIE20_ELBI_SYS_STTS);
+ if (val & XMLH_LINK_UP)
+ break;
+ usleep_range(LINKUP_DELAY_MIN_US, LINKUP_DELAY_MAX_US);
+ } while (retries--);
+
+ if (retries < 0 || !dw_pcie_link_up(pp)) {
+ dev_err(dev, "link initialization failed\n");
+ return -ENXIO;
+ }
+
+ return 0;
+}
+
+static void qcom_pcie_host_init_v1(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ int ret;
+
+ qcom_ep_reset_assert(pcie);
+
+ ret = qcom_pcie_enable_resources_v1(pcie);
+ if (ret)
+ return;
+
+ /* change DBI base address */
+ writel(0, pcie->parf + PCIE20_PARF_DBI_BASE_ADDR);
+
+ if (IS_ENABLED(CONFIG_PCI_MSI))
+ writel_masked(pcie->parf + PCIE20_PARF_AXI_MSTR_WR_ADDR_HALT,
+ 0, BIT(31));
+
+ ret = phy_init(pcie->phy);
+ if (ret)
+ goto err_res;
+
+ ret = phy_power_on(pcie->phy);
+ if (ret)
+ goto err_phy;
+
+ dw_pcie_setup_rc(pp);
+
+ if (IS_ENABLED(CONFIG_PCI_MSI))
+ dw_pcie_msi_init(pp);
+
+ qcom_ep_reset_deassert(pcie);
+
+ ret = qcom_pcie_enable_link_training(pp);
+ if (ret)
+ goto err;
+
+ return;
+
+err:
+ qcom_ep_reset_assert(pcie);
+ phy_power_off(pcie->phy);
+err_phy:
+ phy_exit(pcie->phy);
+err_res:
+ qcom_pcie_disable_resources_v1(pcie);
+}
+
+static void qcom_pcie_host_init_v0(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+ struct qcom_pcie_resources_v0 *res = &pcie->res.v0;
+ struct device *dev = pcie->dev;
+ int ret;
+
+ qcom_ep_reset_assert(pcie);
+
+ ret = qcom_pcie_enable_resources_v0(pcie);
+ if (ret)
+ return;
+
+ writel_masked(pcie->parf + PCIE20_PARF_PHY_CTRL, BIT(0), 0);
+
+ /* enable external reference clock */
+ writel_masked(pcie->parf + PCIE20_PARF_PHY_REFCLK, 0, BIT(16));
+
+ ret = reset_control_deassert(res->phy_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert phy reset\n");
+ return;
+ }
+
+ ret = reset_control_deassert(res->pci_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert pci reset\n");
+ return;
+ }
+
+ ret = reset_control_deassert(res->por_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert por reset\n");
+ return;
+ }
+
+ ret = reset_control_deassert(res->axi_reset);
+ if (ret) {
+ dev_err(dev, "cannot deassert axi reset\n");
+ return;
+ }
+
+ /* wait 150ms for clock acquisition */
+ usleep_range(10000, 15000);
+
+ dw_pcie_setup_rc(pp);
+
+ if (IS_ENABLED(CONFIG_PCI_MSI))
+ dw_pcie_msi_init(pp);
+
+ qcom_ep_reset_deassert(pcie);
+
+ ret = qcom_pcie_enable_link_training(pp);
+ if (ret)
+ goto err;
+
+ return;
+err:
+ qcom_ep_reset_assert(pcie);
+ qcom_pcie_disable_resources_v0(pcie);
+}
+
+static void qcom_pcie_host_init(struct pcie_port *pp)
+{
+ struct qcom_pcie *pcie = to_qcom_pcie(pp);
+
+ if (pcie->version == PCIE_V0)
+ return qcom_pcie_host_init_v0(pp);
+ else
+ return qcom_pcie_host_init_v1(pp);
+}
+
+static int
+qcom_pcie_rd_own_conf(struct pcie_port *pp, int where, int size, u32 *val)
+{
+ /* the device class is not reported correctly from the register */
+ if (where == PCI_CLASS_REVISION && size == 4) {
+ *val = readl(pp->dbi_base + PCI_CLASS_REVISION);
+ *val &= ~(0xffff << 16);
+ *val |= PCI_CLASS_BRIDGE_PCI << 16;
+ return PCIBIOS_SUCCESSFUL;
+ }
+
+ return dw_pcie_cfg_read(pp->dbi_base + (where & ~0x3), where,
+ size, val);
+}
+
+static struct pcie_host_ops qcom_pcie_ops = {
+ .link_up = qcom_pcie_link_up,
+ .host_init = qcom_pcie_host_init,
+ .rd_own_conf = qcom_pcie_rd_own_conf,
+};
+
+static const struct of_device_id qcom_pcie_match[] = {
+ { .compatible = "qcom,pcie-v0", .data = (void *)PCIE_V0 },
+ { .compatible = "qcom,pcie-v1", .data = (void *)PCIE_V1 },
+ { }
+};
+
+static int qcom_pcie_probe(struct platform_device *pdev)
+{
+ struct device *dev = &pdev->dev;
+ const struct of_device_id *match;
+ struct resource *res;
+ struct qcom_pcie *pcie;
+ struct pcie_port *pp;
+ int ret;
+
+ match = of_match_node(qcom_pcie_match, dev->of_node);
+ if (!match)
+ return -ENXIO;
+
+ pcie = devm_kzalloc(dev, sizeof(*pcie), GFP_KERNEL);
+ if (!pcie)
+ return -ENOMEM;
+
+ pcie->version = (unsigned int)match->data;
+
+ pcie->reset = devm_gpiod_get_optional(dev, "perst");
+ if (IS_ERR(pcie->reset) && PTR_ERR(pcie->reset) == -EPROBE_DEFER)
+ return PTR_ERR(pcie->reset);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "parf");
+ pcie->parf = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pcie->parf))
+ return PTR_ERR(pcie->parf);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "dbi");
+ pcie->dbi = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pcie->dbi))
+ return PTR_ERR(pcie->dbi);
+
+ res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "elbi");
+ pcie->elbi = devm_ioremap_resource(dev, res);
+ if (IS_ERR(pcie->elbi))
+ return PTR_ERR(pcie->elbi);
+
+ pcie->phy = devm_phy_optional_get(dev, "pciephy");
+ if (IS_ERR(pcie->phy))
+ return PTR_ERR(pcie->phy);
+
+ pcie->dev = dev;
+
+ if (pcie->version == PCIE_V0)
+ ret = qcom_pcie_get_resources_v0(pcie);
+ else
+ ret = qcom_pcie_get_resources_v1(pcie);
+
+ if (ret)
+ return ret;
+
+ pp = &pcie->pp;
+ pp->dev = dev;
+ pp->dbi_base = pcie->dbi;
+ pp->root_bus_nr = -1;
+ pp->ops = &qcom_pcie_ops;
+
+ if (IS_ENABLED(CONFIG_PCI_MSI)) {
+ pp->msi_irq = platform_get_irq_byname(pdev, "msi");
+ if (pp->msi_irq < 0) {
+ dev_err(dev, "cannot get msi irq\n");
+ return pp->msi_irq;
+ }
+
+ ret = devm_request_irq(dev, pp->msi_irq,
+ qcom_pcie_msi_irq_handler,
+ IRQF_SHARED, "qcom-pcie-msi", pp);
+ if (ret) {
+ dev_err(dev, "cannot request msi irq\n");
+ return ret;
+ }
+ }
+
+ ret = dw_pcie_host_init(pp);
+ if (ret) {
+ dev_err(dev, "cannot initialize host\n");
+ return ret;
+ }
+
+ platform_set_drvdata(pdev, pcie);
+
+ return 0;
+}
+
+static int qcom_pcie_remove(struct platform_device *pdev)
+{
+ struct qcom_pcie *pcie = platform_get_drvdata(pdev);
+
+ qcom_ep_reset_assert(pcie);
+ phy_power_off(pcie->phy);
+ phy_exit(pcie->phy);
+ if (pcie->version == PCIE_V0)
+ qcom_pcie_disable_resources_v0(pcie);
+ else
+ qcom_pcie_disable_resources_v1(pcie);
+
+ return 0;
+}
+
+static struct platform_driver qcom_pcie_driver = {
+ .probe = qcom_pcie_probe,
+ .remove = qcom_pcie_remove,
+ .driver = {
+ .name = "qcom-pcie",
+ .of_match_table = qcom_pcie_match,
+ },
+};
+
+module_platform_driver(qcom_pcie_driver);
+
+MODULE_AUTHOR("Stanimir Varbanov <svarbanov@mm-sol.com>");
+MODULE_DESCRIPTION("Qualcomm PCIe root complex driver");
+MODULE_LICENSE("GPL v2");
+MODULE_ALIAS("platform:qcom-pcie");
--- a/drivers/pci/host/Makefile
+++ b/drivers/pci/host/Makefile
@@ -13,3 +13,4 @@ obj-$(CONFIG_PCIE_XILINX) += pcie-xilinx
obj-$(CONFIG_PCI_XGENE) += pci-xgene.o
obj-$(CONFIG_PCI_LAYERSCAPE) += pci-layerscape.o
obj-$(CONFIG_PCI_VERSATILE) += pci-versatile.o
+obj-$(CONFIG_PCIE_QCOM) += pcie-qcom.o

260
target/linux/ipq806x/patches-4.0/112-ARM-dts-qcom-add-pcie-nodes-to-ipq806x-platforms.patch Normal file
View File

@ -0,0 +1,260 @@
From 5b40516b2f5fb9b2a7d6d3e2e924f12ec9d183a8 Mon Sep 17 00:00:00 2001
From: Mathieu Olivari <mathieu@codeaurora.org>
Date: Tue, 21 Apr 2015 19:01:42 -0700
Subject: [PATCH 8/9] ARM: dts: qcom: add pcie nodes to ipq806x platforms
qcom-pcie driver now supports version 0 of the controller. This change
adds the corresponding entries to the IPQ806x dtsi file and
corresponding platform (AP148).
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
---
arch/arm/boot/dts/qcom-ipq8064-ap148.dts | 30 ++++++++
arch/arm/boot/dts/qcom-ipq8064.dtsi | 124 +++++++++++++++++++++++++++++++
2 files changed, 154 insertions(+)
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
@@ -30,6 +30,22 @@
bias-disable;
};
+ pcie1_pins: pcie1_pinmux {
+ mux {
+ pins = "gpio3";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
+ pcie2_pins: pcie2_pinmux {
+ mux {
+ pins = "gpio48";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
spi_pins: spi_pins {
mux {
pins = "gpio18", "gpio19", "gpio21";
@@ -112,5 +128,19 @@
sata@29000000 {
status = "ok";
};
+
+ pcie0: pci@1b500000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 3 0>;
+ pinctrl-0 = <&pcie1_pins>;
+ pinctrl-names = "default";
+ };
+
+ pcie1: pci@1b700000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 48 0>;
+ pinctrl-0 = <&pcie2_pins>;
+ pinctrl-names = "default";
+ };
};
};
--- a/arch/arm/boot/dts/qcom-ipq8064-db149.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-db149.dts
@@ -37,6 +37,30 @@
bias-disable;
};
+ pcie1_pins: pcie1_pinmux {
+ mux {
+ pins = "gpio3";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
+ pcie2_pins: pcie2_pinmux {
+ mux {
+ pins = "gpio48";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
+ pcie3_pins: pcie3_pinmux {
+ mux {
+ pins = "gpio63";
+ drive-strength = <2>;
+ bias-disable;
+ };
+ };
+
spi_pins: spi_pins {
mux {
pins = "gpio18", "gpio19", "gpio21";
@@ -153,6 +177,27 @@
status = "ok";
};
+ pcie0: pci@1b500000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 3 0>;
+ pinctrl-0 = <&pcie1_pins>;
+ pinctrl-names = "default";
+ };
+
+ pcie1: pci@1b700000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 48 0>;
+ pinctrl-0 = <&pcie2_pins>;
+ pinctrl-names = "default";
+ };
+
+ pcie2: pci@1b900000 {
+ status = "ok";
+ reset-gpio = <&qcom_pinmux 63 0>;
+ pinctrl-0 = <&pcie3_pins>;
+ pinctrl-names = "default";
+ };
+
mdio0: mdio {
compatible = "virtual,mdio-gpio";
#address-cells = <1>;
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
@@ -3,6 +3,7 @@
#include "skeleton.dtsi"
#include <dt-bindings/clock/qcom,gcc-ipq806x.h>
#include <dt-bindings/soc/qcom,gsbi.h>
+#include <dt-bindings/reset/qcom,gcc-ipq806x.h>
/ {
model = "Qualcomm IPQ8064";
@@ -291,5 +292,128 @@
#clock-cells = <1>;
#reset-cells = <1>;
};
+
+ pcie0: pci@1b500000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b500000 0x1000
+ 0x1b502000 0x80
+ 0x1b600000 0x100
+ 0x0ff00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <0>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ ranges = <0x81000000 0 0 0x0fe00000 0 0x00100000 /* downstream I/O */
+ 0x82000000 0 0x00000000 0x08000000 0 0x07e00000>; /* non-prefetchable memory */
+
+ interrupts = <GIC_SPI 35 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 36 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 37 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 38 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 39 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+ clocks = <&gcc PCIE_A_CLK>,
+ <&gcc PCIE_H_CLK>,
+ <&gcc PCIE_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+
+ resets = <&gcc PCIE_ACLK_RESET>,
+ <&gcc PCIE_HCLK_RESET>,
+ <&gcc PCIE_POR_RESET>,
+ <&gcc PCIE_PCI_RESET>,
+ <&gcc PCIE_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+
+ status = "disabled";
+ };
+
+ pcie1: pci@1b700000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b700000 0x1000
+ 0x1b702000 0x80
+ 0x1b800000 0x100
+ 0x31f00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <1>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ ranges = <0x81000000 0 0 0x31e00000 0 0x00100000 /* downstream I/O */
+ 0x82000000 0 0x00000000 0x2e000000 0 0x03e00000>; /* non-prefetchable memory */
+
+ interrupts = <GIC_SPI 57 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 58 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 59 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 60 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 61 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+ clocks = <&gcc PCIE_1_A_CLK>,
+ <&gcc PCIE_1_H_CLK>,
+ <&gcc PCIE_1_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+
+ resets = <&gcc PCIE_1_ACLK_RESET>,
+ <&gcc PCIE_1_HCLK_RESET>,
+ <&gcc PCIE_1_POR_RESET>,
+ <&gcc PCIE_1_PCI_RESET>,
+ <&gcc PCIE_1_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+
+ status = "disabled";
+ };
+
+ pcie2: pci@1b900000 {
+ compatible = "qcom,pcie-v0";
+ reg = <0x1b900000 0x1000
+ 0x1b902000 0x80
+ 0x1ba00000 0x100
+ 0x35f00000 0x100000>;
+ reg-names = "dbi", "elbi", "parf", "config";
+ device_type = "pci";
+ linux,pci-domain = <2>;
+ bus-range = <0x00 0xff>;
+ num-lanes = <1>;
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ ranges = <0x81000000 0 0 0x35e00000 0 0x00100000 /* downstream I/O */
+ 0x82000000 0 0x00000000 0x32000000 0 0x03e00000>; /* non-prefetchable memory */
+
+ interrupts = <GIC_SPI 71 IRQ_TYPE_NONE>;
+ interrupt-names = "msi";
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc 0 72 IRQ_TYPE_LEVEL_HIGH>, /* int_a */
+ <0 0 0 2 &intc 0 73 IRQ_TYPE_LEVEL_HIGH>, /* int_b */
+ <0 0 0 3 &intc 0 74 IRQ_TYPE_LEVEL_HIGH>, /* int_c */
+ <0 0 0 4 &intc 0 75 IRQ_TYPE_LEVEL_HIGH>; /* int_d */
+
+ clocks = <&gcc PCIE_2_A_CLK>,
+ <&gcc PCIE_2_H_CLK>,
+ <&gcc PCIE_2_PHY_CLK>;
+ clock-names = "core", "iface", "phy";
+
+ resets = <&gcc PCIE_2_ACLK_RESET>,
+ <&gcc PCIE_2_HCLK_RESET>,
+ <&gcc PCIE_2_POR_RESET>,
+ <&gcc PCIE_2_PCI_RESET>,
+ <&gcc PCIE_2_PHY_RESET>;
+ reset-names = "axi", "ahb", "por", "pci", "phy";
+
+ status = "disabled";
+ };
};
};

29
target/linux/ipq806x/patches-4.0/113-ARM-qcom-automatically-select-PCI_DOMAINS-if-PCI-is-.patch Normal file
View File

@ -0,0 +1,29 @@
From f004aa1dec6e2e206be025de15b115d60f2b21e3 Mon Sep 17 00:00:00 2001
From: Mathieu Olivari <mathieu@codeaurora.org>
Date: Tue, 21 Apr 2015 19:09:07 -0700
Subject: [PATCH 9/9] ARM: qcom: automatically select PCI_DOMAINS if PCI is
enabled
If multiple PCIe devices are present in the system, the kernel will
panic at boot time when trying to scan the PCI buses. This happens on
IPQ806x based platforms, which has 3 PCIe ports.
Enabling this option allows the kernel to assign the pci-domains
according to the device-tree content. This allows multiple PCIe
controllers to coexist in the system.
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
---
arch/arm/mach-qcom/Kconfig | 1 +
1 file changed, 1 insertion(+)
--- a/arch/arm/mach-qcom/Kconfig
+++ b/arch/arm/mach-qcom/Kconfig
@@ -5,6 +5,7 @@ menuconfig ARCH_QCOM
select ARM_AMBA
select PINCTRL
select QCOM_SCM if SMP
+ select PCI_DOMAINS if PCI
help
Support for Qualcomm's devicetree based systems.

26
target/linux/ipq806x/patches-4.0/700-add-gmac-dts-suport.patch
View File

@ -1,7 +1,7 @@
--- a/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
+++ b/arch/arm/boot/dts/qcom-ipq8064-ap148.dts
@@ -18,8 +18,15 @@
bootargs = "console=ttyMSM0,115200 root=/dev/mtdblock12 rootfstype=squashfs,jffs2";
@@ -22,8 +22,15 @@
linux,stdout-path = "serial0:115200n8";
};
+ aliases {
@ -16,7 +16,7 @@
i2c4_pins: i2c4_pinmux {
pins = "gpio12", "gpio13";
function = "gsbi4";
@@ -34,6 +41,25 @@
@@ -54,6 +61,25 @@
bias-none;
};
};
@ -42,17 +42,17 @@
};
gsbi@16300000 {
@@ -72,6 +98,7 @@
@@ -92,6 +118,7 @@
#size-cells = <1>;
spi-max-frequency = <50000000>;
reg = <0>;
+ m25p,fast-read;
partition@0 {
label = "0:SBL1";
@@ -148,5 +175,66 @@
sata@29000000 {
status = "ok";
label = "lowlevel_init";
@@ -142,5 +169,66 @@
pinctrl-0 = <&pcie2_pins>;
pinctrl-names = "default";
};
+
+ mdio0: mdio {
@ -119,17 +119,17 @@
};
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
@@ -3,6 +3,7 @@
#include "skeleton.dtsi"
@@ -4,6 +4,7 @@
#include <dt-bindings/clock/qcom,gcc-ipq806x.h>
#include <dt-bindings/soc/qcom,gsbi.h>
#include <dt-bindings/reset/qcom,gcc-ipq806x.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
/ {
model = "Qualcomm IPQ8064";
@@ -279,5 +280,42 @@
#clock-cells = <1>;
#reset-cells = <1>;
@@ -415,5 +416,42 @@
status = "disabled";
};
+
+ nss-gmac-common {