[PATCH RFC v7 9/9] arm64: dts: qcom: hamoa: Enable LLCC/DDR/DDR_QOS DVFS

From: Pragnesh Papaniya

Date: Wed Jun 10 2026 - 05:04:07 EST


From: Sibi Sankar <sibi.sankar@xxxxxxxxxxxxxxxx>

On Qualcomm Hamoa SoCs, the memlat governor and the mechanism for
controlling the LLCC and DDR/DDR_QOS frequencies run on the CPU Control
Processor (CPUCP) and are exposed via the QCOM SCMI Generic Extension
protocol. Add the SCMI vendor protocol node required for the QCOM
SCMI Generic Extension protocol to probe get functional bus dvfs
on Hamoa/Purwa SoCs.

Signed-off-by: Sibi Sankar <sibi.sankar@xxxxxxxxxxxxxxxx>
Signed-off-by: Pragnesh Papaniya <pragnesh.papaniya@xxxxxxxxxxxxxxxx>
---
arch/arm64/boot/dts/qcom/hamoa.dtsi | 4 ++++
1 file changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/hamoa.dtsi b/arch/arm64/boot/dts/qcom/hamoa.dtsi
index 4ba751a65142..abd3e4bb9372 100644
--- a/arch/arm64/boot/dts/qcom/hamoa.dtsi
+++ b/arch/arm64/boot/dts/qcom/hamoa.dtsi
@@ -338,6 +338,10 @@ scmi_dvfs: protocol@13 {
reg = <0x13>;
#power-domain-cells = <1>;
};
+
+ scmi_vendor: protocol@80 {
+ reg = <0x80>;
+ };
};
};


--
2.34.1