linux-kernel - [PATCH 1/4] arm64: tegra: Mark host1x as dma-coherent on Tegra194/234

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Message-Id: <20230119133901.1892413-1-cyndis@kapsi.fi>
Date:   Thu, 19 Jan 2023 15:38:58 +0200
From:   Mikko Perttunen <cyndis@...si.fi>
To:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>
Cc:     Mikko Perttunen <mperttunen@...dia.com>,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        dri-devel@...ts.freedesktop.org
Subject: [PATCH 1/4] arm64: tegra: Mark host1x as dma-coherent on Tegra194/234

From: Mikko Perttunen <mperttunen@...dia.com>

Ensure appropriate configuration is done to make the host1x device
and context devices DMA coherent by adding the dma-coherent flag.

Fixes: b35f5b53a87b ("arm64: tegra: Add context isolation domains on Tegra234")
Signed-off-by: Mikko Perttunen <mperttunen@...dia.com>
---
 arch/arm64/boot/dts/nvidia/tegra194.dtsi | 1 +
 arch/arm64/boot/dts/nvidia/tegra234.dtsi | 1 +
 2 files changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/nvidia/tegra194.dtsi b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
index 4afcbd60e144..d8169920b33b 100644
--- a/arch/arm64/boot/dts/nvidia/tegra194.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra194.dtsi
@@ -1918,6 +1918,7 @@ host1x@...00000 {
 			interconnects = <&mc TEGRA194_MEMORY_CLIENT_HOST1XDMAR &emc>;
 			interconnect-names = "dma-mem";
 			iommus = <&smmu TEGRA194_SID_HOST1X>;
+			dma-coherent;
 
 			/* Context isolation domains */
 			iommu-map = <0 &smmu TEGRA194_SID_HOST1X_CTX0 1>,
diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
index eaf05ee9acd1..77ceed615b7f 100644
--- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
@@ -571,6 +571,7 @@ host1x@...00000 {
 			interconnects = <&mc TEGRA234_MEMORY_CLIENT_HOST1XDMAR &emc>;
 			interconnect-names = "dma-mem";
 			iommus = <&smmu_niso1 TEGRA234_SID_HOST1X>;
+			dma-coherent;
 
 			/* Context isolation domains */
 			iommu-map = <0 &smmu_niso0 TEGRA234_SID_HOST1X_CTX0 1>,
-- 
2.39.0