linux-kernel - Re: [PATCH v2 3/3] riscv: dts: allwinner: d1: Add power controller node

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Date:   Fri, 27 Jan 2023 23:17:34 +0100
From:   Jernej Škrabec <jernej.skrabec@...il.com>
To:     Chen-Yu Tsai <wens@...e.org>, Samuel Holland <samuel@...lland.org>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Samuel Holland <samuel@...lland.org>,
        Andre Przywara <andre.przywara@....com>,
        Conor Dooley <conor@...nel.org>,
        Heiko Stuebner <heiko.stuebner@...ll.eu>,
        Palmer Dabbelt <palmer@...belt.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-sunxi@...ts.linux.dev
Subject: Re: [PATCH v2 3/3] riscv: dts: allwinner: d1: Add power controller node

Dne četrtek, 26. januar 2023 ob 07:34:19 CET je Samuel Holland napisal(a):
> The Allwinner D1 family of SoCs contain a PPU power domain controller
> separate from the PRCM. It can power down the video engine and DSP, and
> it contains special logic for hardware-assisted CPU idle.
> 
> Signed-off-by: Samuel Holland <samuel@...lland.org>

Acked-by: Jernej Skrabec <jernej.skrabec@...il.com>

Best regards,
Jernej

> ---
> 
> Changes in v2:
>  - Include a patch adding the device tree node
> 
>  arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi index
> 3723612b1fd8..6fadcee7800f 100644
> --- a/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> +++ b/arch/riscv/boot/dts/allwinner/sunxi-d1s-t113.dtsi
> @@ -799,6 +799,14 @@ tcon_tv0_out_tcon_top_hdmi: endpoint {
>  			};
>  		};
> 
> +		ppu: power-controller@...1000 {
> +			compatible = "allwinner,sun20i-d1-ppu";
> +			reg = <0x7001000 0x1000>;
> +			clocks = <&r_ccu CLK_BUS_R_PPU>;
> +			resets = <&r_ccu RST_BUS_R_PPU>;
> +			#power-domain-cells = <1>;
> +		};
> +
>  		r_ccu: clock-controller@...0000 {
>  			compatible = "allwinner,sun20i-d1-r-ccu";
>  			reg = <0x7010000 0x400>;