Commit c4ce03bf authored by AngeloGioacchino Del Regno's avatar AngeloGioacchino Del Regno Committed by Matthias Brugger
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arm64: dts: mediatek: mt8192-asurada: Couple VGPU and VSRAM_OTHER regulators 



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: default avatarAngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Reviewed-by: default avatarChen-Yu Tsai <wenst@chromium.org>
Tested-by: default avatarChen-Yu Tsai <wenst@chromium.org>
Link: https://lore.kernel.org/r/20230301095523.428461-13-angelogioacchino.delregno@collabora.com


Signed-off-by: default avatarMatthias Brugger <matthias.bgg@gmail.com>
parent ff4c868b

arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi

+9 −0
Original line number Diff line number Diff line
@@ -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>;

			};

		};

	};