Add coupling for these regulators, as VSRAM_OTHER is used to power the
GPU SRAM, and they have a strict voltage output relation to satisfy in
order to ensure GPU stable operation.
While at it, also add voltage constraint overrides for the GPU SRAM
regulator "mt6359_vsram_others" so that we stay in a safe range of
0.75-0.80V.
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
---
arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 8570b78c04a4..f858eca219d7 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -447,6 +447,13 @@ &mt6359_vrf12_ldo_reg {
regulator-always-on;
};
+&mt6359_vsram_others_ldo_reg {
+ regulator-min-microvolt = <750000>;
+ regulator-max-microvolt = <800000>;
+ regulator-coupled-with = <&mt6315_7_vbuck1>;
+ regulator-coupled-max-spread = <10000>;
+};
+
&mt6359_vufs_ldo_reg {
regulator-always-on;
};
@@ -1411,6 +1418,8 @@ mt6315_7_vbuck1: vbuck1 {
regulator-max-microvolt = <800000>;
regulator-enable-ramp-delay = <256>;
regulator-allowed-modes = <0 1 2>;
+ regulator-coupled-with = <&mt6359_vsram_others_ldo_reg>;
+ regulator-coupled-max-spread = <10000>;
};
};
};
--
2.39.2
