arm64: tegra: Mark host1x as dma-coherent on Tegra194/234

Bugzilla: https://bugzilla.redhat.com/show_bug.cgi?id=2186348

commit 361238c
Author: Mikko Perttunen <mperttunen@nvidia.com>
Date: Thu, 19 Jan 2023 15:38:58 +0200

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

    Fixes: b35f5b5 ("arm64: tegra: Add context isolation domains on Tegra234")
    Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com>
    Signed-off-by: Thierry Reding <treding@nvidia.com>

Signed-off-by: Mark Salter <msalter@redhat.com>

Author: mosalter

arch/arm64/boot/dts/nvidia/tegra194.dtsi

@@ -1923,6 +1923,7 @@
 			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>,

arch/arm64/boot/dts/nvidia/tegra234.dtsi

@@ -2151,6 +2151,7 @@
 			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>,