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

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Date:   Thu, 26 Jan 2023 00:34:19 -0600
From:   Samuel Holland <samuel@...lland.org>
To:     Chen-Yu Tsai <wens@...e.org>,
        Jernej Skrabec <jernej.skrabec@...il.com>
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: [PATCH v2 3/3] riscv: dts: allwinner: d1: Add power controller node

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>
---

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>;
-- 
2.37.4