linux-kernel - Re: [PATCH 3/3] arm64: dts: rockchip: Add vdd_cpu

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Message-ID: <0cbafc31-9b46-54df-f569-810a8781743c@linaro.org>
Date:   Fri, 14 Apr 2023 12:27:45 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Christopher Obbard <chris.obbard@...labora.com>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Sebastian Reichel <sebastian.reichel@...labora.com>,
        Shreeya Patel <shreeya.patel@...labora.com>
Cc:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
        kernel@...labora.com
Subject: Re: [PATCH 3/3] arm64: dts: rockchip: Add vdd_cpu_big regulators to
 rk3588-rock-5b

On 14/04/2023 11:34, Cristian Ciocaltea wrote:
> The RK8602 and RK8603 voltage regulators on the Rock 5B board provide
> the power lines vdd_cpu_big0 and vdd_cpu_big1, respectively.
> 
> Add the necessary device tree nodes and bind them to the corresponding
> CPU big core nodes.
> 
> Signed-off-by: Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
> ---
>  .../boot/dts/rockchip/rk3588-rock-5b.dts      | 56 +++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> index 8cc97d146a73..3e4aee8f70c1 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> @@ -53,6 +53,62 @@ vcc5v0_sys: vcc5v0-sys-regulator {
>  	};
>  };
>  
> +&cpu_b0 {
> +	cpu-supply = <&vdd_cpu_big0_s0>;
> +};
> +
> +&cpu_b1 {
> +	cpu-supply = <&vdd_cpu_big0_s0>;
> +};
> +
> +&cpu_b2 {
> +	cpu-supply = <&vdd_cpu_big1_s0>;
> +};
> +
> +&cpu_b3 {
> +	cpu-supply = <&vdd_cpu_big1_s0>;
> +};
> +
> +&i2c0 {
> +	pinctrl-names = "default";
> +	pinctrl-0 = <&i2c0m2_xfer>;
> +	status = "okay";
> +
> +	vdd_cpu_big0_s0: regulator@42 {
> +		compatible = "rockchip,rk8602";

Looking at your next node, this is surprising... Double check if you
have correct compatibles everywhere.

> +		reg = <0x42>;
> +		fcs,suspend-voltage-selector = <1>;

Does not look like you tested the DTS against bindings. Please run `make
dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
for instructions).

> +		regulator-name = "vdd_cpu_big0_s0";
> +		regulator-always-on;
> +		regulator-boot-on;
> +		regulator-min-microvolt = <550000>;
> +		regulator-max-microvolt = <1050000>;
> +		regulator-ramp-delay = <2300>;
> +		vin-supply = <&vcc5v0_sys>;
> +
> +		regulator-state-mem {
> +			regulator-off-in-suspend;
> +		};
> +	};
> +
> +	vdd_cpu_big1_s0: regulator@43 {
> +		compatible = "rockchip,rk8603", "rockchip,rk8602";
> +		reg = <0x43>;
> +		fcs,suspend-voltage-selector = <1>;

Does not look like you tested the DTS against bindings. Please run `make
dtbs_check` (see Documentation/devicetree/bindings/writing-schema.rst
for instructions).

Best regards,
Krzysztof