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Date: Fri, 12 Sep 2014 16:48:57 +0800
From: Robin Gong <b38343@...escale.com>
To: <robh+dt@...nel.org>, <pawel.moll@....com>, <mark.rutland@....com>,
<ijc+devicetree@...lion.org.uk>, <galak@...eaurora.org>,
<shawn.guo@...escale.com>, <kernel@...gutronix.de>,
<sre@...nel.org>, <dbaryshkov@...il.com>, <dwmw2@...radead.org>,
<grant.likely@...aro.org>, <linux@....linux.org.uk>
CC: <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
<linux-pm@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>
Subject: [PATCH v2 1/3] ARM: dts: imx6: add pm_power_off support for i.mx6 chips
All chips of i.mx6 can be powered off by programming SNVS.
For example :
On i.mx6q-sabresd board, PMIC_ON_REQ connect with external
pmic ON/OFF pin, that will cause the whole PMIC powered off
except VSNVS. And system can restart once PMIC_ON_REQ goes
high by push POWRER key.
Signed-off-by: Robin Gong <b38343@...escale.com>
---
.../bindings/power_supply/imx-snvs-poweroff.txt | 21 +++++++++++++++++++++
arch/arm/boot/dts/imx6qdl.dtsi | 5 +++++
arch/arm/boot/dts/imx6sl.dtsi | 5 +++++
arch/arm/boot/dts/imx6sx.dtsi | 5 +++++
4 files changed, 36 insertions(+)
create mode 100644 Documentation/devicetree/bindings/power_supply/imx-snvs-poweroff.txt
diff --git a/Documentation/devicetree/bindings/power_supply/imx-snvs-poweroff.txt b/Documentation/devicetree/bindings/power_supply/imx-snvs-poweroff.txt
new file mode 100644
index 0000000..1a3ab9a
--- /dev/null
+++ b/Documentation/devicetree/bindings/power_supply/imx-snvs-poweroff.txt
@@ -0,0 +1,21 @@
+i.mx6 Poweroff Driver
+
+SNVS_LPCR in SNVS module can power off the whole system by pull
+PMIC_ON_REQ low.
+
+Required Properties:
+-compatible: "fsl,sec-v4.0-poweroff"
+-reg: Specifies the physical address of the SNVS_LPCR register
+
+Example:
+ snvs@...cc000 {
+ compatible = "fsl,sec-v4.0-mon", "simple-bus";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges = <0 0x020cc000 0x4000>;
+ .....
+ snvs-poweroff@38 {
+ compatible = "fsl,sec-v4.0-poweroff";
+ reg = <0x38 0x4>;
+ };
+ }
diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
index 70d7207..d2d7563 100644
--- a/arch/arm/boot/dts/imx6qdl.dtsi
+++ b/arch/arm/boot/dts/imx6qdl.dtsi
@@ -650,6 +650,11 @@
interrupts = <0 19 IRQ_TYPE_LEVEL_HIGH>,
<0 20 IRQ_TYPE_LEVEL_HIGH>;
};
+
+ snvs-poweroff@38 {
+ compatible = "fsl,sec-v4.0-poweroff";
+ reg = <0x38 0x4>;
+ };
};
epit1: epit@...d0000 { /* EPIT1 */
diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi
index ba67714..6e1d8f6 100644
--- a/arch/arm/boot/dts/imx6sl.dtsi
+++ b/arch/arm/boot/dts/imx6sl.dtsi
@@ -568,6 +568,11 @@
interrupts = <0 19 IRQ_TYPE_LEVEL_HIGH>,
<0 20 IRQ_TYPE_LEVEL_HIGH>;
};
+
+ snvs-poweroff@38 {
+ compatible = "fsl,sec-v4.0-poweroff";
+ reg = <0x38 0x4>;
+ };
};
epit1: epit@...d0000 {
diff --git a/arch/arm/boot/dts/imx6sx.dtsi b/arch/arm/boot/dts/imx6sx.dtsi
index d137caca..c1f937e 100644
--- a/arch/arm/boot/dts/imx6sx.dtsi
+++ b/arch/arm/boot/dts/imx6sx.dtsi
@@ -671,6 +671,11 @@
reg = <0x34 0x58>;
interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
};
+
+ snvs-poweroff@38 {
+ compatible = "fsl,sec-v4.0-poweroff";
+ reg = <0x38 0x4>;
+ };
};
epit1: epit@...d0000 {
--
1.9.1
--
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