6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
[ Upstream commit 94085049fdad7a36fe14dd55e72e712fe55d6bca ]
GPU_SMMU SID 1 is meant for Adreno LPAC (Low Priority Async Compute).
On platforms that support it (in firmware), it is necessary to
describe that link, or Adreno register access will hang the board.
The current settings are functionally identical, *but* due to what is
likely hardcoded security policies, the secure firmware rejects them,
resulting in the board hanging. To avoid that, alter the settings such
that SID 0 and 1 are described separately.
Fixes: 96c471970b7b ("arm64: dts: qcom: sc7280: Add gpu support")
Signed-off-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230926-topic-a643-v2-2-06fa3d899c0a@xxxxxxxxxx
Signed-off-by: Bjorn Andersson <andersson@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sc7280.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/qcom/sc7280.dtsi b/arch/arm64/boot/dts/qcom/sc7280.dtsi
index 95c35892fb85..4903d17c4207 100644
--- a/arch/arm64/boot/dts/qcom/sc7280.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7280.dtsi
@@ -2558,7 +2558,8 @@ gpu: gpu@3d00000 {
"cx_mem",
"cx_dbgc";
interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH>;
- iommus = <&adreno_smmu 0 0x401>;
+ iommus = <&adreno_smmu 0 0x400>,
+ <&adreno_smmu 1 0x400>;
operating-points-v2 = <&gpu_opp_table>;
qcom,gmu = <&gmu>;
interconnects = <&gem_noc MASTER_GFX3D 0 &mc_virt SLAVE_EBI1 0>;
--
2.43.0
