Re: [PATCH v2 2/4] ARM: dts: qcom: pm8226: add PON device node along with resin sub-node

[Konrad Dybcio <konrad.dybcio@linaro.org>]

On 29.12.2022 00:04, Rayyan Ansari wrote:
> The PON (Power On) device in PM8226 supports both the power key and
> resin (reset input).
> The reset input is usually connected to a physical volume up/down button.
> 
> Signed-off-by: Rayyan Ansari <rayyan@ansari.sh>
> ---
>  arch/arm/boot/dts/qcom-pm8226.dtsi | 24 +++++++++++++++++++-----
>  1 file changed, 19 insertions(+), 5 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/qcom-pm8226.dtsi b/arch/arm/boot/dts/qcom-pm8226.dtsi
> index a2092569970a..6af259218f63 100644
> --- a/arch/arm/boot/dts/qcom-pm8226.dtsi
> +++ b/arch/arm/boot/dts/qcom-pm8226.dtsi
> @@ -1,5 +1,6 @@
>  // SPDX-License-Identifier: BSD-3-Clause
>  #include <dt-bindings/iio/qcom,spmi-vadc.h>
> +#include <dt-bindings/input/linux-event-codes.h>
>  #include <dt-bindings/interrupt-controller/irq.h>
>  #include <dt-bindings/spmi/spmi.h>
>  
> @@ -10,12 +11,25 @@ pm8226_0: pm8226@0 {
>  		#address-cells = <1>;
>  		#size-cells = <0>;
>  
> -		pwrkey@800 {
> -			compatible = "qcom,pm8941-pwrkey";
> +		pon@800 {
> +			compatible = "qcom,pm8916-pon";
>  			reg = <0x800>;
> -			interrupts = <0x0 0x8 0 IRQ_TYPE_EDGE_BOTH>;
> -			debounce = <15625>;
> -			bias-pull-up;
> +
> +			pwrkey {
> +				compatible = "qcom,pm8941-pwrkey";
> +				interrupts = <0x0 0x8 0 IRQ_TYPE_EDGE_BOTH>;
> +				debounce = <15625>;
> +				bias-pull-up;
> +				linux,code = <KEY_POWER>;
That's redundant, the driver sets this by default if linux,code is
not found.

Konrad
> +			};
> +
> +			pm8226_resin: resin {
> +				compatible = "qcom,pm8941-resin";
> +				interrupts = <0x0 0x8 1 IRQ_TYPE_EDGE_BOTH>;
> +				debounce = <15625>;
> +				bias-pull-up;
> +				status = "disabled";
> +			};
>  		};
>  
>  		smbb: charger@1000 {