[PATCH v3 6/6] arm64: dts: qcom: talos: Add GEM_NOC interconnect for adreno SMMU
Bibek Kumar Patro
bibek.patro at oss.qualcomm.com
Mon Jul 6 09:56:39 PDT 2026
On Talos 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/talos.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/qcom/talos.dtsi b/arch/arm64/boot/dts/qcom/talos.dtsi
index e506a16c9070..ec7f2c78ad18 100644
--- a/arch/arm64/boot/dts/qcom/talos.dtsi
+++ b/arch/arm64/boot/dts/qcom/talos.dtsi
@@ -2090,6 +2090,8 @@ adreno_smmu: iommu at 50a0000 {
"iface";
power-domains = <&gpucc CX_GDSC>;
dma-coherent;
+ interconnects = <&gem_noc MASTER_GPU_TCU QCOM_ICC_TAG_ALWAYS
+ &mc_virt SLAVE_EBI1 QCOM_ICC_TAG_ALWAYS>;
};
stm at 6002000 {
--
2.34.1
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