linux-kernel - Re: [PATCH v1 3/4] arm64: dts: rockchip: rk3588-rock5b: Enable GPU

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Date: Mon, 25 Mar 2024 16:44:41 +0100
From: Boris Brezillon <boris.brezillon@...labora.com>
To: Sebastian Reichel <sebastian.reichel@...labora.com>
Cc: Heiko Stuebner <heiko@...ech.de>, linux-rockchip@...ts.infradead.org,
 Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski
 <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
 kernel@...labora.com
Subject: Re: [PATCH v1 3/4] arm64: dts: rockchip: rk3588-rock5b: Enable GPU

On Mon, 25 Mar 2024 16:37:20 +0100
Sebastian Reichel <sebastian.reichel@...labora.com> wrote:

> From: Boris Brezillon <boris.brezillon@...labora.com>
> 
> Enable the Mali GPU in the Rock 5B.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@...labora.com>

I don't remember writing this patch ;-), maybe I screwed authorship at
some point, dunno.

> Signed-off-by: Sebastian Reichel <sebastian.reichel@...labora.com>
> ---
>  arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> index 1fe8b2a0ed75..096ee7a98b89 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> +++ b/arch/arm64/boot/dts/rockchip/rk3588-rock-5b.dts
> @@ -180,6 +180,11 @@ &cpu_l3 {
>  	cpu-supply = <&vdd_cpu_lit_s0>;
>  };
>  
> +&gpu {
> +	mali-supply = <&vdd_gpu_s0>;
> +	status = "okay";
> +};
> +
>  &i2c0 {
>  	pinctrl-names = "default";
>  	pinctrl-0 = <&i2c0m2_xfer>;
> @@ -470,6 +475,7 @@ rk806_dvs3_null: dvs3-null-pins {
>  
>  		regulators {
>  			vdd_gpu_s0: vdd_gpu_mem_s0: dcdc-reg1 {
> +				regulator-always-on;

Hm, should we mention why the regulator is always on here?

>  				regulator-boot-on;
>  				regulator-min-microvolt = <550000>;
>  				regulator-max-microvolt = <950000>;