[PATCH v2 3/6] arm64: dts: qcom: kodiak: Add GEM_NOC interconnect for adreno SMMU

From: Bibek Kumar Patro

Date: Tue May 26 2026 - 10:49:18 EST


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@xxxxxxxxxxxxxxxx>
---
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@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@3dd9000 {

--
2.34.1