arm64: dts: mediatek: mt8195-cherry: Update min voltage constraint for MT6315

Update the minimum voltage from 300000 uV to 400000 uV so it matches
the MT6315 datasheet.

Also update the minimum voltage for Vgpu regulator from 625000 uV to
400000 uV because the requested voltage could be lower than the minimum
voltage on the GPU OPP table when the MTK Smart Voltage Scaling (SVS)
driver is enabled.

Fixes: 260c04d425eb ("arm64: dts: mediatek: cherry: Enable MT6315 regulators on SPMI bus")
Signed-off-by: Pin-yen Lin <treapking@chromium.org>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Link: https://lore.kernel.org/r/20240315111621.2263159-3-treapking@chromium.org
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>

diff --git a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
index f12322eac3898248418377cae42034291851a2ab..4a11918da370483c287d5e03193e02656b617af1 100644 (file)
--- a/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
@@ -1246,7 +1246,7 @@
                        mt6315_6_vbuck1: vbuck1 {
                                regulator-compatible = "vbuck1";
                                regulator-name = "Vbcpu";
-                               regulator-min-microvolt = <300000>;
+                               regulator-min-microvolt = <400000>;
                                regulator-max-microvolt = <1193750>;
                                regulator-enable-ramp-delay = <256>;
                                regulator-ramp-delay = <6250>;
@@ -1264,7 +1264,7 @@
                        mt6315_7_vbuck1: vbuck1 {
                                regulator-compatible = "vbuck1";
                                regulator-name = "Vgpu";
-                               regulator-min-microvolt = <625000>;
+                               regulator-min-microvolt = <400000>;
                                regulator-max-microvolt = <1193750>;
                                regulator-enable-ramp-delay = <256>;
                                regulator-ramp-delay = <6250>;