From 7e5258b0b79d8be916abd064b5f4aa2715580478 Mon Sep 17 00:00:00 2001 From: Jordan Crouse Date: Mon, 9 Nov 2020 11:47:28 -0700 Subject: [PATCH] arm: dts: qcom: sm845: Set the compatible string for the GPU SMMU Set the qcom,adreno-smmu compatible string for the GPU SMMU to enable split pagetables and per-instance pagetables for drm/msm. Signed-off-by: Jordan Crouse Signed-off-by: Rob Clark Reviewed-by: Bjorn Andersson Link: https://lore.kernel.org/r/20201109184728.2463097-5-jcrouse@codeaurora.org Signed-off-by: Bjorn Andersson --- arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi | 9 +++++++++ arch/arm64/boot/dts/qcom/sdm845.dtsi | 2 +- 2 files changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi index 64fc1bf..39f23cd 100644 --- a/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845-cheza.dtsi @@ -633,6 +633,15 @@ ap_ts_i2c: &i2c14 { status = "okay"; }; +/* + * Cheza fw does not properly program the GPU aperture to allow the + * GPU to update the SMMU pagetables for context switches. Work + * around this by dropping the "qcom,adreno-smmu" compat string. + */ +&adreno_smmu { + compatible = "qcom,sdm845-smmu-v2", "qcom,smmu-v2"; +}; + &mss_pil { iommus = <&apps_smmu 0x781 0x0>, <&apps_smmu 0x724 0x3>; diff --git a/arch/arm64/boot/dts/qcom/sdm845.dtsi b/arch/arm64/boot/dts/qcom/sdm845.dtsi index aca7e9c..895e703 100644 --- a/arch/arm64/boot/dts/qcom/sdm845.dtsi +++ b/arch/arm64/boot/dts/qcom/sdm845.dtsi @@ -4106,7 +4106,7 @@ }; adreno_smmu: iommu@5040000 { - compatible = "qcom,sdm845-smmu-v2", "qcom,smmu-v2"; + compatible = "qcom,sdm845-smmu-v2", "qcom,adreno-smmu", "qcom,smmu-v2"; reg = <0 0x5040000 0 0x10000>; #iommu-cells = <1>; #global-interrupts = <2>; -- 2.7.4