[PATCH 2/2] arm64: dts: msm8996: Mark the GPU's SMMU as an adreno one.

Eric Anholt
2021-03-26T23:14:15Z

This enables the adreno-specific SMMU path that sets HUPCF so
(user-managed) page faults don't wedge the GPU.

Signed-off-by: Eric Anholt <eric@anholt.net>
---

We've been seeing a flaky test per day or so in Mesa CI where the
kernel gets wedged after an iommu fault turns into CP errors. With
this patch, the CI isn't throwing the string of CP errors on the
faults in any of the ~10 jobs I've run so far.

arch/arm64/boot/dts/qcom/msm8996.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/msm8996.dtsi b/arch/arm64/boot/dts/qcom/msm8996.dtsi
index 6de136e3add9..432b87ec9c5e 100644
--- a/arch/arm64/boot/dts/qcom/msm8996.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8996.dtsi
@@ -1127,7 +1127,7 @@ cci_i2c1: i2c-bus@1 {
};

adreno_smmu: iommu@b40000 {
- compatible = "qcom,msm8996-smmu-v2", "qcom,smmu-v2";
+ compatible = "qcom,msm8996-smmu-v2", "qcom,adreno-smmu", "qcom,smmu-v2";
reg = <0x00b40000 0x10000>;

#global-interrupts = <1>;
--
2.31.0