[5/6] arm64: dts: qcom: msm8976: Declare and use SDC2 pins

Add the pinctrl states for SDC2 and use them on sdhc_2 to support SD
Cards on the currently mainlined Sony Loire platform.

Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
---
 .../qcom/msm8956-sony-xperia-loire-kugo.dts   |  6 +++
 .../dts/qcom/msm8956-sony-xperia-loire.dtsi   |  6 +++
 arch/arm64/boot/dts/qcom/msm8976.dtsi         | 45 +++++++++++++++++++
 3 files changed, 57 insertions(+)

On 15.12.2022 00:20, Marijn Suijten wrote:
> Add the pinctrl states for SDC2 and use them on sdhc_2 to support SD
> Cards on the currently mainlined Sony Loire platform.
> 
> Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
> ---
>  .../qcom/msm8956-sony-xperia-loire-kugo.dts   |  6 +++
>  .../dts/qcom/msm8956-sony-xperia-loire.dtsi   |  6 +++
>  arch/arm64/boot/dts/qcom/msm8976.dtsi         | 45 +++++++++++++++++++
>  3 files changed, 57 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts b/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts
> index 3fb8e23e4330..9178943e2ee1 100644
> --- a/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts
> +++ b/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts
> @@ -33,3 +33,9 @@ &pm8950_l1 {
>  	regulator-min-microvolt = <1100000>;
>  	regulator-max-microvolt = <1300000>;
>  };
> +
> +&sdc2_on_state {
> +	data-pins {
> +		drive-strength = <8>;
> +	};
> +};
You can add a label to the data-pins subnode.


> diff --git a/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire.dtsi b/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire.dtsi
> index 700583a56a0e..2253fb05f1c9 100644
> --- a/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire.dtsi
> @@ -264,6 +264,12 @@ &sdhc_1 {
>  	status = "okay";
>  };
>  
> +&sdc2_on_state {
> +	clk-pins {
> +		drive-strength = <10>;
> +	};
> +};
> +
>  &sdhc_2 {
>  	bus-width = <4>;
>  	cd-gpios = <&tlmm 100 GPIO_ACTIVE_HIGH>;
> diff --git a/arch/arm64/boot/dts/qcom/msm8976.dtsi b/arch/arm64/boot/dts/qcom/msm8976.dtsi
> index 7d4c7548882c..f3371eaa2940 100644
> --- a/arch/arm64/boot/dts/qcom/msm8976.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8976.dtsi
> @@ -558,6 +558,46 @@ rclk-pins {
>  				};
>  			};
>  
> +			sdc2_off_state: sdc2-off-state {
> +				clk-pins {
> +					pins = "sdc2_clk";
> +					drive-strength = <2>;
> +					bias-disable;
> +				};
> +
> +				cmd-pins {
> +					pins = "sdc2_cmd";
> +					drive-strength = <2>;
> +					bias-pull-up;
> +				};
> +
> +				data-pins {
> +					pins = "sdc2_data";
> +					drive-strength = <2>;
> +					bias-pull-up;
> +				};
> +			};
> +
> +			sdc2_on_state: sdc2-on-state {
> +				clk-pins {
> +					pins = "sdc2_clk";
> +					drive-strength = <16>;
> +					bias-disable;
> +				};
> +
> +				cmd-pins {
> +					pins = "sdc2_cmd";
> +					drive-strength = <10>;
> +					bias-pull-up;
> +				};
> +
> +				data-pins {
> +					pins = "sdc2_data";
> +					drive-strength = <10>;
> +					bias-pull-up;
> +				};
> +			};
> +
>  			spi1_default: spi0-default-state {
>  				spi-pins {
>  					pins = "gpio0", "gpio1", "gpio3";
> @@ -751,6 +791,11 @@ sdhc_2: mmc@7864000 {
>  				 <&gcc GCC_SDCC2_APPS_CLK>,
>  				 <&rpmcc RPM_SMD_XO_CLK_SRC>;
>  			clock-names = "iface", "core", "xo";
> +
> +			pinctrl-0 = <&sdc2_on_state>;
> +			pinctrl-1 = <&sdc2_off_state>;
> +			pinctrl-names = "default", "sleep";
Ditto (prev patch)

Konrad
> +
>  			status = "disabled";
>  		};
>

On 2022-12-15 14:20:30, Konrad Dybcio wrote:
> 
> 
> On 15.12.2022 00:20, Marijn Suijten wrote:
> > Add the pinctrl states for SDC2 and use them on sdhc_2 to support SD
> > Cards on the currently mainlined Sony Loire platform.
> > 
> > Signed-off-by: Marijn Suijten <marijn.suijten@somainline.org>
> > ---
> >  .../qcom/msm8956-sony-xperia-loire-kugo.dts   |  6 +++
> >  .../dts/qcom/msm8956-sony-xperia-loire.dtsi   |  6 +++
> >  arch/arm64/boot/dts/qcom/msm8976.dtsi         | 45 +++++++++++++++++++
> >  3 files changed, 57 insertions(+)
> > 
> > diff --git a/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts b/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts
> > index 3fb8e23e4330..9178943e2ee1 100644
> > --- a/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts
> > +++ b/arch/arm64/boot/dts/qcom/msm8956-sony-xperia-loire-kugo.dts
> > @@ -33,3 +33,9 @@ &pm8950_l1 {
> >  	regulator-min-microvolt = <1100000>;
> >  	regulator-max-microvolt = <1300000>;
> >  };
> > +
> > +&sdc2_on_state {
> > +	data-pins {
> > +		drive-strength = <8>;
> > +	};
> > +};
> You can add a label to the data-pins subnode.

I prefer this simplicity as the sdc2_*_state labels are already
available and will be extended later with sd-cd-pins regardless. I'll
change this if others share the same opinion.

However, you're also right this way of writing makes it unclear to the
reader whether data-pins already exists or has to exist; that would not
be the case when a label is explicitly assigned to data-pins.

- Marijn