[PATCH 2/2] arm64: dts: allwinner: h6: Add IOMMU reference to Hantro G2

Chen-Yu Tsai wenst at chromium.org
Tue Nov 15 01:06:44 PST 2022


The Hantro G2 video decoder block sits behind the IOMMU. Without a
reference for the system to properly configure the IOMMU, it will fault
and cause the video decoder to fail.

Add a proper reference to the IOMMU port. The master ID is taken from
the IOMMU fault error message on Linux, and the number seems to match
the order in the user manual's IOMMU diagram.

Fixes: 0baddea60e8d ("arm64: dts: allwinner: h6: Add Hantro G2 node")
Signed-off-by: Chen-Yu Tsai <wenst at chromium.org>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 53f6660656ac..ca1d287a0a01 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -161,6 +161,7 @@ video-codec-g2 at 1c00000 {
 			clocks = <&ccu CLK_BUS_VP9>, <&ccu CLK_VP9>;
 			clock-names = "bus", "mod";
 			resets = <&ccu RST_BUS_VP9>;
+			iommus = <&iommu 5>;
 		};
 
 		video-codec at 1c0e000 {
-- 
2.38.1.493.g58b659f92b-goog




More information about the linux-arm-kernel mailing list