linux-kernel - Re: [PATCH 1/4] arm64: dts: rockchip: list all CPU supplies on ArmSoM Sige5

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Message-Id: <DAEK3EQVNWQX.24DOM2VICSGCP@cknow.org>
Date: Thu, 05 Jun 2025 13:17:43 +0200
From: "Diederik de Haas" <didi.debian@...ow.org>
To: "Alexey Charkov" <alchark@...il.com>, "Rob Herring" <robh@...nel.org>,
 "Krzysztof Kozlowski" <krzk+dt@...nel.org>, "Conor Dooley"
 <conor+dt@...nel.org>, "Heiko Stuebner" <heiko@...ech.de>
Cc: <devicetree@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
 <linux-rockchip@...ts.infradead.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 1/4] arm64: dts: rockchip: list all CPU supplies on
 ArmSoM Sige5

On Tue Jun 3, 2025 at 7:01 PM CEST, Alexey Charkov wrote:
> List both CPU supply regulators which drive the little and big CPU
> clusters, respectively, so that cpufreq can pick them up.
>
> Signed-off-by: Alexey Charkov <alchark@...il.com>
> ---
>  .../boot/dts/rockchip/rk3576-armsom-sige5.dts      | 28 ++++++++++++++++++++++
>  1 file changed, 28 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts b/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts
> index b09e789c75c47fec7cf7e9810ab0dcca32d9404a..d9c129be55a0d997e04e6d677cdc98fb50353418 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3576-armsom-sige5.dts
> @@ -207,6 +207,22 @@ vcc_3v3_ufs_s0: regulator-vcc-ufs-s0 {
>  	};
>  };
>  
> +&cpu_b0 {
> +	cpu-supply = <&vdd_cpu_big_s0>;
> +};
> +
> +&cpu_b1 {
> +	cpu-supply = <&vdd_cpu_big_s0>;
> +};
> +
> +&cpu_b2 {
> +	cpu-supply = <&vdd_cpu_big_s0>;
> +};
> +
> +&cpu_b3 {
> +	cpu-supply = <&vdd_cpu_big_s0>;
> +};
> +
>  &combphy0_ps {
>  	status = "okay";
>  };

The &cpu_bN nodes should come after the &combphy0_ps node.

Cheers,
  Diederik

> @@ -215,6 +231,18 @@ &cpu_l0 {
>  	cpu-supply = <&vdd_cpu_lit_s0>;
>  };
>  
> +&cpu_l1 {
> +	cpu-supply = <&vdd_cpu_lit_s0>;
> +};
> +
> +&cpu_l2 {
> +	cpu-supply = <&vdd_cpu_lit_s0>;
> +};
> +
> +&cpu_l3 {
> +	cpu-supply = <&vdd_cpu_lit_s0>;
> +};
> +
>  &gmac0 {
>  	phy-mode = "rgmii-id";
>  	clock_in_out = "output";


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