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

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Message-ID: <b75a846c-63be-9f30-e786-f34292cfeaf4@linaro.org>
Date:   Fri, 14 Apr 2023 13:29:38 +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 12:40, Cristian Ciocaltea wrote:
> 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.

OK. The question about compatibles still stays - but maybe you have
indeed 8603 and 8602 in the same time.

Best regards,
Krzysztof