[PATCH RFC v2 04/14] arm64: dts: qcom: sm8650: move smmu sid 1 to new lpac device
From: Anna Maniscalco
Date: Thu Oct 29 2026 - 09:59:28 EST
Previously both SID 0 and 1 where associated with the same domain.
When LPAC is not used this is needed so firmware can acces memory when
initializing using the same page table as GFX.
To use LPAC however we need to move SID 1 to a different device.
Signed-off-by: Anna Maniscalco <anna.maniscalco2000@xxxxxxxxx>
---
arch/arm64/boot/dts/qcom/sm8650.dtsi | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/sm8650.dtsi b/arch/arm64/boot/dts/qcom/sm8650.dtsi
index 1604bc8cff37..f47d1dbd06da 100644
--- a/arch/arm64/boot/dts/qcom/sm8650.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8650.dtsi
@@ -4144,8 +4144,7 @@ gpu: gpu@3d00000 {
interrupts = <GIC_SPI 300 IRQ_TYPE_LEVEL_HIGH 0>;
- iommus = <&adreno_smmu 0 0x0>,
- <&adreno_smmu 1 0x0>;
+ iommus = <&adreno_smmu 0 0x0>;
operating-points-v2 = <&gpu_opp_table>;
@@ -4158,6 +4157,12 @@ gpu: gpu@3d00000 {
status = "disabled";
+ lpac: lpac {
+ compatible = "qcom,lpac";
+
+ iommus = <&adreno_smmu 1 0x0>;
+ };
+
gpu_zap_shader: zap-shader {
memory-region = <&gpu_micro_code_mem>;
};
--
2.56.0