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imx6: kernel: update 3.14 pcie patches 

Remove old irq map patch and replace it with the propper upstream patches
allowing IMX6 PCIe devices behind PCIe switches to work properly.

Signed-off-by: Tim Harvey <tharvey@gateworks.com>

SVN-Revision: 41004
lede-17.01
Luka Perkov 2014-06-04 23:01:30 +00:00
parent 2ecdc86b4d
commit 284a07f748
4 changed files with 151 additions and 43 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

55
target/linux/imx6/patches-3.14/0055-ARM_dts_imx_fix-invallid-#address-cells-value.patch Normal file
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@ -0,0 +1,55 @@
commit d644122d8420c425fdf5c74e50d440d5f146bc0c
Author: Tim Harvey <tharvey@gateworks.com>
Date: Thu Mar 13 09:37:51 2014 -0700
ARM: dts: imx: fix invalid #address-cells value
The invalid value of #address-cells in the imx6 pcie host controller node
causes of_irq_parse_raw() to incorrectly advance through an interrupt-map
table of more than one interrupt. We also take the opportunity to drop the
unused #size-cells here.
This patch resolves this issue and allows proper interrupt mapping for an
imx6 pcie host connected to a P2P bridge when using legacy interrupts.
Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Cc: Jason Gunthorpe <jgunthorpe@obsidianresearch.com>
Cc: Jingoo Han <jg1.han@samsung.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: linux-samsung-soc <linux-samsung-soc@vger.kernel.org>
Cc: Richard Zhu <r65037@freescale.com>
Cc: Sascha Hauer <kernel@pengutronix.de>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Stephen Warren <swarren@wwwdotorg.org>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Simon Horman <horms@verge.net.au>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Ben Dooks <ben-linux@fluff.org>
Cc: linux-tegra <linux-tegra@vger.kernel.org>
Cc: Kukjin Kim <kgene.kim@samsung.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Grant Likely <grant.likely@linaro.org>
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -38,8 +38,6 @@
intc: interrupt-controller@00a01000 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
- #address-cells = <1>;
- #size-cells = <1>;
interrupt-controller;
reg = <0x00a01000 0x1000>,
<0x00a00100 0x100>;
--- a/arch/arm/boot/dts/imx6sl.dtsi
+++ b/arch/arm/boot/dts/imx6sl.dtsi
@@ -44,8 +44,6 @@
intc: interrupt-controller@00a01000 {
compatible = "arm,cortex-a9-gic";
#interrupt-cells = <3>;
- #address-cells = <1>;
- #size-cells = <1>;
interrupt-controller;
reg = <0x00a01000 0x1000>,
<0x00a00100 0x100>;

58
target/linux/imx6/patches-3.14/0060-pci_designware_use-new-OF-interrupt-mapping-when-possible.patch Normal file
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@ -0,0 +1,58 @@
commit 62fe03d1dd629a98c6da86cabb2a98b85e89d516
Author: Lucas Stach <l.stach@pengutronix.de>
Date: Wed Mar 5 14:25:51 2014 +0100
PCI: designware: use new OF interrupt mapping when possible
This is the recommended method of doing the IRQ
mapping. For old devicetrees we fall back to the
previous practice.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Reviewed-by: Marek Vasut <marex@denx.de>
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -17,6 +17,7 @@
#include <linux/module.h>
#include <linux/msi.h>
#include <linux/of_address.h>
+#include <linux/of_pci.h>
#include <linux/pci.h>
#include <linux/pci_regs.h>
#include <linux/types.h>
@@ -492,7 +493,7 @@ int __init dw_pcie_host_init(struct pcie
dw_pci.nr_controllers = 1;
dw_pci.private_data = (void **)&pp;
- pci_common_init(&dw_pci);
+ pci_common_init_dev(pp->dev, &dw_pci);
pci_assign_unassigned_resources();
#ifdef CONFIG_PCI_DOMAINS
dw_pci.domain++;
@@ -725,7 +726,7 @@ static struct pci_bus *dw_pcie_scan_bus(
if (pp) {
pp->root_bus_nr = sys->busnr;
- bus = pci_scan_root_bus(NULL, sys->busnr, &dw_pcie_ops,
+ bus = pci_scan_root_bus(pp->dev, sys->busnr, &dw_pcie_ops,
sys, &sys->resources);
} else {
bus = NULL;
@@ -738,8 +739,13 @@ static struct pci_bus *dw_pcie_scan_bus(
static int dw_pcie_map_irq(const struct pci_dev *dev, u8 slot, u8 pin)
{
struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata);
+ int irq;
- return pp->irq;
+ irq = of_irq_parse_and_map_pci(dev, slot, pin);
+ if (!irq)
+ irq = pp->irq;
+
+ return irq;
}
static void dw_pcie_add_bus(struct pci_bus *bus)

38
target/linux/imx6/patches-3.14/0065-ARM-dts-imx6-add-PCIe-interrupt-mapping-properties.patch Normal file
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@ -0,0 +1,38 @@
From 07134a365f1c4be6e840a00ae452d1593f15c5fc Mon Sep 17 00:00:00 2001
From: Lucas Stach <l.stach@pengutronix.de>
Date: Wed, 5 Mar 2014 14:25:50 +0100
Subject: [PATCH] ARM: dts: imx6: add PCIe interrupt mapping properties
As defined by the common PCI bindings.
Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
---
arch/arm/boot/dts/imx6qdl.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -10,6 +10,8 @@
* http://www.gnu.org/copyleft/gpl.html
*/
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+
#include "skeleton.dtsi"
/ {
@@ -125,6 +127,12 @@
0x82000000 0 0x01000000 0x01000000 0 0x00f00000>; /* non-prefetchable memory */
num-lanes = <1>;
interrupts = <0 123 0x04>;
+ #interrupt-cells = <1>;
+ interrupt-map-mask = <0 0 0 0x7>;
+ interrupt-map = <0 0 0 1 &intc GIC_SPI 123 IRQ_TYPE_LEVEL_HIGH>,
+ <0 0 0 2 &intc GIC_SPI 122 IRQ_TYPE_LEVEL_HIGH>,
+ <0 0 0 3 &intc GIC_SPI 121 IRQ_TYPE_LEVEL_HIGH>,
+ <0 0 0 4 &intc GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
clocks = <&clks 189>, <&clks 187>, <&clks 206>, <&clks 144>;
clock-names = "pcie_ref_125m", "sata_ref_100m", "lvds_gate", "pcie_axi";
status = "disabled";

43
target/linux/imx6/patches-3.14/200-PCI-imx6-add-support-for-legacy-irqs.patch
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@ -1,43 +0,0 @@
From: Tim Harvey <tharvey@gateworks.com>
Subject: [PATCH] PCI: imx6: add support for legacy irqs
The i.MX6 supports legacy IRQ's via 155,154,153,152. When devices
are behind a PCIe-to-PCIe switch (at least for the TI XIO2001) the
mapping is reversed from when they are behind a PCIe switch.
This patch still needs some review and clarification before going
upstream.
---
drivers/pci/host/pcie-designware.c | 21 ++++++++++++++++++++-
1 file changed, 20 insertions(+), 1 deletion(-)
--- a/drivers/pci/host/pcie-designware.c
+++ b/drivers/pci/host/pcie-designware.c
@@ -739,7 +739,26 @@ static int dw_pcie_map_irq(const struct
{
struct pcie_port *pp = sys_to_pcie(dev->bus->sysdata);
- return pp->irq;
+ /* TI XIO2001 PCIe-to-PCI bridge IRQs are flipped it seems */
+ if ( dev->bus && dev->bus->self
+ && (dev->bus->self->vendor == 0x104c)
+ && (dev->bus->self->device == 0x8240)) {
+ switch (pin) {
+ case 1: return pp->irq - 3;
+ case 2: return pp->irq - 2;
+ case 3: return pp->irq - 1;
+ case 4: return pp->irq;
+ default: return -1;
+ }
+ } else {
+ switch (pin) {
+ case 1: return pp->irq;
+ case 2: return pp->irq - 1;
+ case 3: return pp->irq - 2;
+ case 4: return pp->irq - 3;
+ default: return -1;
+ }
+ }
}
static void dw_pcie_add_bus(struct pci_bus *bus)