linux-kernel - [PATCH RFC v2 3/3] arm64: dts: amlogic: Add video decoder driver support for S4 SOCs

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Message-Id: <20251124-b4-s4-vdec-upstream-v2-3-bdbbce3f11a6@amlogic.com>
Date: Mon, 24 Nov 2025 11:32:19 +0800
From: Zhentao Guo via B4 Relay <devnull+zhentao.guo.amlogic.com@...nel.org>
To: Mauro Carvalho Chehab <mchehab@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Neil Armstrong <neil.armstrong@...aro.org>, 
 Kevin Hilman <khilman@...libre.com>, Jerome Brunet <jbrunet@...libre.com>, 
 Martin Blumenstingl <martin.blumenstingl@...glemail.com>
Cc: linux-media@...r.kernel.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-amlogic@...ts.infradead.org, Zhentao Guo <zhentao.guo@...ogic.com>
Subject: [PATCH RFC v2 3/3] arm64: dts: amlogic: Add video decoder driver
 support for S4 SOCs

From: Zhentao Guo <zhentao.guo@...ogic.com>

Add vcodec node to enable Amlogic V4L2 stateless video decoder
support.

Signed-off-by: Zhentao Guo <zhentao.guo@...ogic.com>
---
 arch/arm64/boot/dts/amlogic/meson-s4.dtsi | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
index 9d99ed2994df..80f1b92492a5 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-s4.dtsi
@@ -853,5 +853,32 @@ emmc: mmc@...8c000 {
 			no-sd;
 			status = "disabled";
 		};
+
+		canvas: video-lut@...36048 {
+			compatible = "amlogic,canvas";
+			reg = <0x0 0xfe036048 0x0 0x14>;
+		};
+
+		video-codec@...20000 {
+			compatible = "amlogic,s4-vcodec-dec";
+			reg = <0x0 0xfe320000 0x0 0x10000>,
+			      <0x0 0xfe036000 0x0 0x20>;
+			amlogic,canvas = <&canvas>;
+			reg-names = "dos",
+				    "dmc";
+			interrupts = <GIC_SPI 91 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 92 IRQ_TYPE_EDGE_RISING>,
+				     <GIC_SPI 93 IRQ_TYPE_EDGE_RISING>;
+			clocks = <&clkc_periphs CLKID_DOS>,
+				 <&clkc_periphs CLKID_VDEC_SEL>,
+				 <&clkc_periphs CLKID_HEVCF_SEL>;
+			clock-names = "vdec",
+				      "clk_vdec_mux",
+				      "clk_hevcf_mux";
+			power-domains = <&pwrc PWRC_S4_DOS_VDEC_ID>,
+					<&pwrc PWRC_S4_DOS_HEVC_ID>;
+			power-domain-names = "vdec",
+					     "hevc";
+		};
 	};
 };

-- 
2.42.0