linux-kernel - Re: [PATCH v2 3/3] arm64: dts: qcom: sa8295p-adp: Add max20411 on i2c12

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Date:   Fri, 27 Jan 2023 10:55:21 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Bjorn Andersson <quic_bjorande@...cinc.com>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH v2 3/3] arm64: dts: qcom: sa8295p-adp: Add max20411 on
 i2c12

On Tue, Jan 24, 2023 at 10:44:40AM -0800, Bjorn Andersson wrote:
> From: Bjorn Andersson <bjorn.andersson@...aro.org>
> 
> The SA8295P ADP has a Maxim max20411 step-down converter on i2c12.
> 
> Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
> Signed-off-by: Bjorn Andersson <quic_bjorande@...cinc.com>
> ---
> 
> Changes since v1:
> - i2c node had changed name
> 
>  arch/arm64/boot/dts/qcom/sa8295p-adp.dts | 41 ++++++++++++++++++++++++
>  1 file changed, 41 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> index bb4270e8f551..642000d95812 100644
> --- a/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> +++ b/arch/arm64/boot/dts/qcom/sa8295p-adp.dts
> @@ -266,6 +266,27 @@ &dispcc1 {
>  	status = "okay";
>  };
>  
> +&i2c12 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c12_state>;
> +
> +	status = "okay";
> +
> +	vdd_gfx: regulator@39 {

Nit: Should the label be named 'vreg_gfx' (or 'vreg_vdd_gfx)') for
consistency with rest of the file?

> +		compatible = "maxim,max20411";
> +		reg = <0x39>;
> +
> +		regulator-name = "vdd_gfx";
> +		regulator-min-microvolt = <800000>;
> +		regulator-max-microvolt = <968750>;
> +
> +		enable-gpios = <&pmm8540a_gpios 2 GPIO_ACTIVE_HIGH>;
> +
> +		pinctrl-names = "default";
> +		pinctrl-0 = <&vdd_gfx_enable_state>;
> +	};
> +};
> +
>  &mdss0 {
>  	status = "okay";
>  };
> @@ -476,6 +497,10 @@ &pcie4_phy {
>  	status = "okay";
>  };
>  
> +&qup1 {
> +	status = "okay";
> +};
> +
>  &qup2 {
>  	status = "okay";
>  };
> @@ -636,7 +661,23 @@ &xo_board_clk {
>  
>  /* PINCTRL */
>  
> +&pmm8540a_gpios {
> +	vdd_gfx_enable_state: vdd-gfx-enable-state {

For consistency with the rest of sc8280xp, can you rename this

	vdd_gfx_en: vdd-gfx-en-state {

(i.e. drop the 'state' from the label and shorten 'enable')?

> +		pins = "gpio2";
> +		function = "normal";
> +		output-enable;
> +	};
> +};
> +
>  &tlmm {
> +	i2c12_state: i2c12-state {

Similar here, this should be

	i2c12_default: i2c12-default-state {

> +		pins = "gpio0", "gpio1";
> +		function = "qup12";
> +

And this newline can be removed.

> +		drive-strength = <2>;
> +		bias-pull-up;
> +	};
> +
>  	pcie2a_default: pcie2a-default-state {
>  		clkreq-n-pins {
>  			pins = "gpio142";

Johan