mirror of https://github.com/hak5/openwrt.git
ipq806x: add support for RPM message RAM
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>lede-17.01
Pavel Kubelun
John Crispin
parent
07d0c1b947
commit
77b6bfc2f5
|
|
@ -224,6 +224,9 @@
|
|||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
clocks = <&gcc RPM_MSG_RAM_H_CLK>;
|
||||
clock-names = "ram";
|
||||
|
||||
rpmcc: clock-controller {
|
||||
compatible = "qcom,rpmcc-ipq806x", "qcom,rpmcc";
|
||||
#clock-cells = <1>;
|
||||
|
|
|
|||
|
|
@ -0,0 +1,29 @@
|
|||
From 349290fc9e761aaef6d6882721189f668ec5ff49 Mon Sep 17 00:00:00 2001
|
||||
From: Peter Chen <peter.chen@nxp.com>
|
||||
Date: Fri, 15 Jul 2016 17:38:46 +0800
|
||||
Subject: mfd: qcom_rpm: Add missing of_node_put after calling of_parse_phandle
|
||||
|
||||
of_node_put needs to be called when the device node which is got
|
||||
from of_parse_phandle has finished using.
|
||||
|
||||
Signed-off-by: Peter Chen <peter.chen@nxp.com>
|
||||
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
|
||||
Signed-off-by: Lee Jones <lee.jones@linaro.org>
|
||||
---
|
||||
drivers/mfd/qcom_rpm.c | 1 +
|
||||
1 file changed, 1 insertion(+)
|
||||
|
||||
diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
|
||||
index a74210d..d330071 100644
|
||||
--- a/drivers/mfd/qcom_rpm.c
|
||||
+++ b/drivers/mfd/qcom_rpm.c
|
||||
@@ -589,6 +589,7 @@ static int qcom_rpm_probe(struct platform_device *pdev)
|
||||
}
|
||||
|
||||
rpm->ipc_regmap = syscon_node_to_regmap(syscon_np);
|
||||
+ of_node_put(syscon_np);
|
||||
if (IS_ERR(rpm->ipc_regmap))
|
||||
return PTR_ERR(rpm->ipc_regmap);
|
||||
|
||||
--
|
||||
cgit v0.12
|
||||
|
|
@ -0,0 +1,94 @@
|
|||
From 3526403353c2a1b94c3181f900582626d23c339b Mon Sep 17 00:00:00 2001
|
||||
From: Linus Walleij <linus.walleij@linaro.org>
|
||||
Date: Thu, 18 Aug 2016 20:40:45 +0200
|
||||
Subject: mfd: qcom_rpm: Handle message RAM clock
|
||||
MIME-Version: 1.0
|
||||
Content-Type: text/plain; charset=UTF-8
|
||||
Content-Transfer-Encoding: 8bit
|
||||
|
||||
The MSM8660, APQ8060, IPQ806x and MSM8960 have a GCC clock
|
||||
to the message RAM used by the RPM. This needs to be enabled
|
||||
for messages to pass through. This is a crude solution that
|
||||
simply prepare/enable at probe() and disable/unprepare
|
||||
at remove(). More elaborate PM is probably possible to
|
||||
add later.
|
||||
|
||||
The construction uses IS_ERR() to gracefully handle the
|
||||
platforms that do not provide a message RAM clock. It will
|
||||
bail out of probe only if the clock is hitting a probe
|
||||
deferral situation.
|
||||
|
||||
Of course this requires the proper device tree set-up:
|
||||
|
||||
rpm: rpm@104000 {
|
||||
compatible = "qcom,rpm-msm8660";
|
||||
clocks = <&gcc RPM_MSG_RAM_H_CLK>;
|
||||
clock-names = "ram";
|
||||
...
|
||||
};
|
||||
|
||||
I have provided this in the MSM8660 device tree, and will
|
||||
provide patches for the other targets.
|
||||
|
||||
Cc: Björn Andersson <bjorn.andersson@linaro.org>
|
||||
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
|
||||
Signed-off-by: Lee Jones <lee.jones@linaro.org>
|
||||
---
|
||||
drivers/mfd/qcom_rpm.c | 20 ++++++++++++++++++++
|
||||
1 file changed, 20 insertions(+)
|
||||
|
||||
diff --git a/drivers/mfd/qcom_rpm.c b/drivers/mfd/qcom_rpm.c
|
||||
index d330071..52fafea 100644
|
||||
--- a/drivers/mfd/qcom_rpm.c
|
||||
+++ b/drivers/mfd/qcom_rpm.c
|
||||
@@ -21,6 +21,7 @@
|
||||
#include <linux/mfd/qcom_rpm.h>
|
||||
#include <linux/mfd/syscon.h>
|
||||
#include <linux/regmap.h>
|
||||
+#include <linux/clk.h>
|
||||
|
||||
#include <dt-bindings/mfd/qcom-rpm.h>
|
||||
|
||||
@@ -48,6 +49,7 @@ struct qcom_rpm {
|
||||
struct regmap *ipc_regmap;
|
||||
unsigned ipc_offset;
|
||||
unsigned ipc_bit;
|
||||
+ struct clk *ramclk;
|
||||
|
||||
struct completion ack;
|
||||
struct mutex lock;
|
||||
@@ -552,6 +554,20 @@ static int qcom_rpm_probe(struct platform_device *pdev)
|
||||
mutex_init(&rpm->lock);
|
||||
init_completion(&rpm->ack);
|
||||
|
||||
+ /* Enable message RAM clock */
|
||||
+ rpm->ramclk = devm_clk_get(&pdev->dev, "ram");
|
||||
+ if (IS_ERR(rpm->ramclk)) {
|
||||
+ ret = PTR_ERR(rpm->ramclk);
|
||||
+ if (ret == -EPROBE_DEFER)
|
||||
+ return ret;
|
||||
+ /*
|
||||
+ * Fall through in all other cases, as the clock is
|
||||
+ * optional. (Does not exist on all platforms.)
|
||||
+ */
|
||||
+ rpm->ramclk = NULL;
|
||||
+ }
|
||||
+ clk_prepare_enable(rpm->ramclk); /* Accepts NULL */
|
||||
+
|
||||
irq_ack = platform_get_irq_byname(pdev, "ack");
|
||||
if (irq_ack < 0) {
|
||||
dev_err(&pdev->dev, "required ack interrupt missing\n");
|
||||
@@ -672,7 +688,11 @@ static int qcom_rpm_probe(struct platform_device *pdev)
|
||||
|
||||
static int qcom_rpm_remove(struct platform_device *pdev)
|
||||
{
|
||||
+ struct qcom_rpm *rpm = dev_get_drvdata(&pdev->dev);
|
||||
+
|
||||
of_platform_depopulate(&pdev->dev);
|
||||
+ clk_disable_unprepare(rpm->ramclk);
|
||||
+
|
||||
return 0;
|
||||
}
|
||||
|
||||
--
|
||||
cgit v0.12
|
||||
|
|
@ -0,0 +1,24 @@
|
|||
From 9bf6b333d6a4d3a3ef0d3fc7ca0becd008c81820 Mon Sep 17 00:00:00 2001
|
||||
From: Pavel Kubelun <be.dissent@gmail.com>
|
||||
Date: Sun, 6 Nov 2016 19:12:46 +0300
|
||||
Subject: [PATCH] ipq806x: add RPM msg RAM into DT
|
||||
|
||||
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
|
||||
---
|
||||
arch/arm/boot/dts/qcom-ipq8064.dtsi | 3 +++
|
||||
1 file changed, 3 insertions(+)
|
||||
|
||||
diff --git a/arch/arm/boot/dts/qcom-ipq8064.dtsi b/arch/arm/boot/dts/qcom-ipq8064.dtsi
|
||||
index 6b06118..d1ff9d0 100644
|
||||
--- a/arch/arm/boot/dts/qcom-ipq8064.dtsi
|
||||
+++ b/arch/arm/boot/dts/qcom-ipq8064.dtsi
|
||||
@@ -184,6 +184,9 @@
|
||||
"err",
|
||||
"wakeup";
|
||||
|
||||
+ clocks = <&gcc RPM_MSG_RAM_H_CLK>;
|
||||
+ clock-names = "ram";
|
||||
+
|
||||
#address-cells = <1>;
|
||||
#size-cells = <0>;
|
||||
|
||||
Loading…
Reference in New Issue