linux-kernel - Re: [PATCH 6/8] arm64: dts: qcom: pmm8155au

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Date:   Thu, 10 Jun 2021 22:12:23 -0500
From:   Bjorn Andersson <bjorn.andersson@...aro.org>
To:     Bhupesh Sharma <bhupesh.sharma@...aro.org>
Cc:     linux-arm-msm@...r.kernel.org,
        Linus Walleij <linus.walleij@...aro.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>, Vinod Koul <vkoul@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Andy Gross <agross@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-gpio@...r.kernel.org,
        bhupesh.linux@...il.com
Subject: Re: [PATCH 6/8] arm64: dts: qcom: pmm8155au_1: Add base dts file

On Mon 07 Jun 06:38 CDT 2021, Bhupesh Sharma wrote:

> Add base DTS file for pmm8155au_1 along with GPIOs, power-on, rtc and vadc
> nodes.
> 
> Cc: Linus Walleij <linus.walleij@...aro.org>
> Cc: Liam Girdwood <lgirdwood@...il.com>
> Cc: Mark Brown <broonie@...nel.org>
> Cc: Bjorn Andersson <bjorn.andersson@...aro.org>
> Cc: Vinod Koul <vkoul@...nel.org>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: Andy Gross <agross@...nel.org>
> Cc: devicetree@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: linux-gpio@...r.kernel.org
> Cc: bhupesh.linux@...il.com
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---
>  arch/arm64/boot/dts/qcom/pmm8155au_1.dtsi | 134 ++++++++++++++++++++++
>  1 file changed, 134 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/qcom/pmm8155au_1.dtsi
> 
> diff --git a/arch/arm64/boot/dts/qcom/pmm8155au_1.dtsi b/arch/arm64/boot/dts/qcom/pmm8155au_1.dtsi

As we describe our PMICs by including their definition to the top level
of the .dts I don't see any alternative to duplicating this as _1 and
_2. So let's go with this structure.

[..]
> +
> +&spmi_bus {
> +	pmm8155au_1_0: pmic@0 {

I don't think you need to give this a label.

> +		compatible = "qcom,pmm8155au-1", "qcom,spmi-pmic";

This is a "qcom,pmm8155au", "qcom,spmi-pmic", the labels are used to
differentiate the two instances.

> +		reg = <0x0 SPMI_USID>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +
[..]
> +
> +		pmm8155au_1_gpios: gpio@...0 {
> +			compatible = "qcom,pmm8155au-1-gpio";

"qcom,pmm8155au-gpio"

> +			reg = <0xc000>;
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			interrupt-controller;
> +			#interrupt-cells = <2>;
> +		};
> +	};
> +
> +	pmic@1 {
> +		compatible = "qcom,pmm8155au-1", "qcom,spmi-pmic";

"qcom,pmm8155au"

Thanks,
Bjorn

> +		reg = <0x1 SPMI_USID>;
> +		#address-cells = <1>;
> +		#size-cells = <0>;
> +	};
> +};
> -- 
> 2.31.1
>