[PATCH RFC 02/11] arm64: dts: qcom: sc7180: Affirm IDR0.CCTW on apps_smmu

[Konrad Dybcio]

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