Thread (6 messages) 6 messages, 2 authors, 2022-11-18
STALE1347d REVIEWED: 3 (3M)
Revisions (2)
  1. v1 [diff vs current]
  2. v2 current

[PATCH v2 2/2] arm64: dts: allwinner: h6: Fix Cedrus IOMMU channels

From: Jernej Skrabec <jernej.skrabec@gmail.com>
Date: 2022-11-17 06:07:35
Also in: linux-devicetree, linux-media, linux-sunxi, lkml
Subsystem: arm/allwinner sunxi soc support, the rest · Maintainers: Chen-Yu Tsai, Jernej Skrabec, Samuel Holland, Linus Torvalds

Cedrus H6 actually uses two IOMMU channels. During development page
faults from both were observed. Documentation also lists both of them
to be connected to Cedrus, but it doesn't make clear which is used for
what.

Add second IOMMU channel.

Reviewed-by: Samuel Holland <samuel@sholland.org>
Fixes: 62a8ccf3a248 ("arm64: dts: allwinner: h6: Fix Cedrus IOMMU usage")
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>
---
 arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
index 53f6660656ac..7bff054a9bdf 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi
@@ -172,7 +172,7 @@ video-codec@1c0e000 {
 			resets = <&ccu RST_BUS_VE>;
 			interrupts = <GIC_SPI 89 IRQ_TYPE_LEVEL_HIGH>;
 			allwinner,sram = <&ve_sram 1>;
-			iommus = <&iommu 3>;
+			iommus = <&iommu 1>, <&iommu 3>;
 		};
 
 		gpu: gpu@1800000 {
-- 
2.38.1


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