[PATCH v3 3/6] arm64: dts: qcom: kodiak: Add GEM_NOC interconnect for adreno SMMU
Bibek Kumar Patro
bibek.patro at oss.qualcomm.com
Mon Jul 6 09:56:36 PDT 2026
On Kodiak platforms, the Adreno SMMU requires a bandwidth vote on
the GEM_NOC path (MASTER_GPU_TCU -> SLAVE_EBI1) before its registers
are accessible. Without this vote, the SMMU may become unreachable,
leading to intermittent probe failures and runtime issues.
Add the required interconnect to ensure reliable register access.
Signed-off-by: Bibek Kumar Patro <bibek.patro at oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/kodiak.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/kodiak.dtsi b/arch/arm64/boot/dts/qcom/kodiak.dtsi
index 90e50c245c0c..721526f023dd 100644
--- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
+++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
@@ -3389,6 +3389,8 @@ adreno_smmu: iommu at 3da0000 {
power-domains = <&gpucc GPU_CC_CX_GDSC>;
dma-coherent;
+ interconnects = <&gem_noc MASTER_GPU_TCU QCOM_ICC_TAG_ALWAYS
+ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
};
gfx_0_tbu: tbu at 3dd9000 {
--
2.34.1
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