[PATCH v2 3/6] arm64: dts: qcom: kodiak: Add GEM_NOC interconnect for adreno SMMU
Bibek Kumar Patro
bibek.patro at oss.qualcomm.com
Tue May 26 07:42:04 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 fa540d8c2615dc02d941eb16bc7253204c2750bd..eefa4b836a81374ff437ab4bbcbc3fecc1590ab6 100644
--- a/arch/arm64/boot/dts/qcom/kodiak.dtsi
+++ b/arch/arm64/boot/dts/qcom/kodiak.dtsi
@@ -3386,6 +3386,8 @@ 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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