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

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Message-ID: <36d8050b-0636-2b30-f3fc-7f7d96bec253@collabora.com>
Date:   Fri, 14 Apr 2023 13:40:55 +0300
From:   Cristian Ciocaltea <cristian.ciocaltea@...labora.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        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 4/14/23 13:27, Krzysztof Kozlowski wrote:
> 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).

I mentioned in the cover letter that the support for the RK860X 
regulators has been recently merged via [1]. The patches in this 
series have been verified on next-20230413.

[1] https://lore.kernel.org/lkml/20230406194158.963352-1-cristian.ciocaltea@collabora.com/

Thanks,
Cristian