From: Konrad Dybcio <quic_kdybcio@xxxxxxxxxxx>
On RPMh-based SoCs, the APPS SMMU advertizes support for cache-coherent
pagetable walk via the IDR0 register. This however is not respected by
the arm-smmu driver unless dma-coherent is set.
Mark the node as dma-coherent to ensure this (and other) implementations
take this coherency into account.
Signed-off-by: Konrad Dybcio <quic_kdybcio@xxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sc7180.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm64/boot/dts/qcom/sc7180.dtsi b/arch/arm64/boot/dts/qcom/sc7180.dtsi
index b5ebf89803251203a8d38f6a4690aa052a9e8e61..ed258b4ab486af1765b882164962c56935210898 100644
--- a/arch/arm64/boot/dts/qcom/sc7180.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180.dtsi
@@ -3625,6 +3625,7 @@ apps_smmu: iommu@15000000 {
<GIC_SPI 410 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 411 IRQ_TYPE_LEVEL_HIGH>,
<GIC_SPI 412 IRQ_TYPE_LEVEL_HIGH>;
+ dma-coherent;
};
intc: interrupt-controller@17a00000 {
--
2.46.1
