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SubjectRe: [PATCH 1/3] ARM: dts: imx6: add pm_power_off support for i.mx6 chips
On Wed, Nov 12, 2014 at 04:20:37PM +0800, Robin Gong wrote:
> 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@freescale.com>
> ---
> arch/arm/boot/dts/imx6qdl-sabresd.dtsi | 4 ++++
> arch/arm/boot/dts/imx6qdl.dtsi | 6 ++++++
> arch/arm/boot/dts/imx6sl-evk.dts | 4 ++++
> arch/arm/boot/dts/imx6sl.dtsi | 6 ++++++
> arch/arm/boot/dts/imx6sx-sdb.dts | 4 ++++
> arch/arm/boot/dts/imx6sx.dtsi | 6 ++++++
> 6 files changed, 30 insertions(+)
>
> diff --git a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
> index 07fb302..ba12cc6 100644
> --- a/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-sabresd.dtsi
> @@ -531,6 +531,10 @@
> status = "okay";
> };
>
> +&snvs-poweroff {
> + status = "okay";
> +};
> +
> &ssi2 {
> status = "okay";
> };
> diff --git a/arch/arm/boot/dts/imx6qdl.dtsi b/arch/arm/boot/dts/imx6qdl.dtsi
> index c701af9..3a032d1 100644
> --- a/arch/arm/boot/dts/imx6qdl.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl.dtsi
> @@ -645,6 +645,12 @@
> interrupts = <0 19 IRQ_TYPE_LEVEL_HIGH>,
> <0 20 IRQ_TYPE_LEVEL_HIGH>;
> };
> +
> + snvs-poweroff: snvs-poweroff@38 {

I'm not sure if it's because my DTC version is too low or you didn't
test, the DTC reports error in label name 'snvs-poweroff'. IIRC, hyphen
'-' cannot be used in label name, but underscore '_' can.

Shawn

> + compatible = "fsl,sec-v4.0-poweroff";
> + reg = <0x38 0x4>;
> + status = "disabled";
> + };
> };
>
> epit1: epit@020d0000 { /* EPIT1 */
> diff --git a/arch/arm/boot/dts/imx6sl-evk.dts b/arch/arm/boot/dts/imx6sl-evk.dts
> index 3f9e041..dab588f 100644
> --- a/arch/arm/boot/dts/imx6sl-evk.dts
> +++ b/arch/arm/boot/dts/imx6sl-evk.dts
> @@ -488,6 +488,10 @@
> status = "okay";
> };
>
> +&snvs-poweroff {
> + status = "okay";
> +};
> +
> &ssi2 {
> status = "okay";
> };
> diff --git a/arch/arm/boot/dts/imx6sl.dtsi b/arch/arm/boot/dts/imx6sl.dtsi
> index 505da9e..5e5ed07 100644
> --- a/arch/arm/boot/dts/imx6sl.dtsi
> +++ b/arch/arm/boot/dts/imx6sl.dtsi
> @@ -565,6 +565,12 @@
> interrupts = <0 19 IRQ_TYPE_LEVEL_HIGH>,
> <0 20 IRQ_TYPE_LEVEL_HIGH>;
> };
> +
> + snvs-poweroff: snvs-poweroff@38 {
> + compatible = "fsl,sec-v4.0-poweroff";
> + reg = <0x38 0x4>;
> + status = "disabled";
> + };
> };
>
> epit1: epit@020d0000 {
> diff --git a/arch/arm/boot/dts/imx6sx-sdb.dts b/arch/arm/boot/dts/imx6sx-sdb.dts
> index a3980d9..78dc031 100644
> --- a/arch/arm/boot/dts/imx6sx-sdb.dts
> +++ b/arch/arm/boot/dts/imx6sx-sdb.dts
> @@ -251,6 +251,10 @@
> };
> };
>
> +&snvs-poweroff {
> + status = "okay";
> +};
> +
> &ssi2 {
> status = "okay";
> };
> diff --git a/arch/arm/boot/dts/imx6sx.dtsi b/arch/arm/boot/dts/imx6sx.dtsi
> index f4b9da6..652be9f 100644
> --- a/arch/arm/boot/dts/imx6sx.dtsi
> +++ b/arch/arm/boot/dts/imx6sx.dtsi
> @@ -668,6 +668,12 @@
> reg = <0x34 0x58>;
> interrupts = <GIC_SPI 19 IRQ_TYPE_LEVEL_HIGH>, <GIC_SPI 20 IRQ_TYPE_LEVEL_HIGH>;
> };
> +
> + snvs-poweroff: snvs-poweroff@38 {
> + compatible = "fsl,sec-v4.0-poweroff";
> + reg = <0x38 0x4>;
> + status = "disabled";
> + };
> };
>
> epit1: epit@020d0000 {
> --
> 1.7.9.5
>


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