[PATCH v2 16/16] arm64: dts: mediatek: mt8188-geralt: Add little core CPU power supplies

Chen-Yu Tsai
2026-05-05T10:15:15Z

The device tree for the MT8188 Geralt is missing power supplies for all
the CPU cores. Power for the little cores is fed from the MT6359 PMIC.
Power for the big cores is fed from an MT6319 PMIC on SPMI. The latter
is currently not working in Linux.

Add the power supplies for the little cores.

Supplies for the big cores will be added once the issue with SPMI is
resolved.

Reviewed-by: Fei Shao <fshao@chromium.org>
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
.../boot/dts/mediatek/mt8188-geralt.dtsi | 24 +++++++++++++++++++
1 file changed, 24 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
index d57e0eec676a..4cb23595d17b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8188-geralt.dtsi
@@ -217,6 +217,30 @@ &cam_vcore {
domain-supply = <&mt6359_vproc1_buck_reg>;
};

+&cpu0 {
+ cpu-supply = <&mt6359_vcore_buck_reg>;
+};
+
+&cpu1 {
+ cpu-supply = <&mt6359_vcore_buck_reg>;
+};
+
+&cpu2 {
+ cpu-supply = <&mt6359_vcore_buck_reg>;
+};
+
+&cpu3 {
+ cpu-supply = <&mt6359_vcore_buck_reg>;
+};
+
+&cpu4 {
+ cpu-supply = <&mt6359_vcore_buck_reg>;
+};
+
+&cpu5 {
+ cpu-supply = <&mt6359_vcore_buck_reg>;
+};
+
/*
* Geralt is the reference design and doesn't have target TDP.
* Ciri is (currently) the only device following Geralt, and its
--
2.54.0.545.g6539524ca2-goog