ARM: dts: imx6ul: add pm_power_off support

i.MX6UL can be powered off by programming SNVS.

When long press ON/OFF button(5 seconds),
PMIC_ON_REQ pin will be set to low and external
PMIC will be powered off.

And system can be powered on by long press ON/OFF
button again.

Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm/boot/dts/imx6ul-14x14-evk.dts b/arch/arm/boot/dts/imx6ul-14x14-evk.dts
index 25746b1..2fe5b1f 100644 (file)
--- a/arch/arm/boot/dts/imx6ul-14x14-evk.dts
+++ b/arch/arm/boot/dts/imx6ul-14x14-evk.dts
@@ -87,6 +87,10 @@
        };
 };
 
+&snvs_poweroff {
+       status = "okay";
+};
+
 &uart1 {
        pinctrl-names = "default";
        pinctrl-0 = <&pinctrl_uart1>;

diff --git a/arch/arm/boot/dts/imx6ul.dtsi b/arch/arm/boot/dts/imx6ul.dtsi
index c2eb3d4..96b00c6 100644 (file)
--- a/arch/arm/boot/dts/imx6ul.dtsi
+++ b/arch/arm/boot/dts/imx6ul.dtsi
@@ -429,6 +429,14 @@
                                                     <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
                                };
 
+                               snvs_poweroff: snvs-poweroff {
+                                       compatible = "syscon-poweroff";
+                                       regmap = <&snvs>;
+                                       offset = <0x38>;
+                                       mask = <0x60>;
+                                       status = "disabled";
+                               };
+
                                snvs_pwrkey: snvs-powerkey {
                                        compatible = "fsl,sec-v4.0-pwrkey";
                                        regmap = <&snvs>;