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arm64: dts: mediatek: mt8195-cherry: Add supply for SPI NOR flash

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The SPI NOR flash is powered by a separate "always on" 1.8V LDO
regulated power rail. This rail is fed from the system 3.3V rail.

Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
This commit is contained in:
Chen-Yu Tsai 2026-05-05 18:14:03 +08:00 committed by AngeloGioacchino Del Regno
parent 76c8b91598
commit 66e5674f0e
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GPG Key ID: 9A3604CFAD978478
1 changed files with 12 additions and 0 deletions
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arch/arm64/boot/dts/mediatek/mt8195-cherry.dtsi
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@ -47,6 +47,17 @@ memory@40000000 {
reg = <0 0x40000000 0 0x80000000>;
};
/* system critical LDO 1.8V power rail */
pp1800_ldo_z2: regulator-pp1800-ldo-z2 {
compatible = "regulator-fixed";
regulator-name = "pp1800_ldo_z2";
regulator-always-on;
regulator-boot-on;
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
vin-supply = <&pp3300_z2>;
};
pp3300_disp_x: regulator-pp3300-disp-x {
compatible = "regulator-fixed";
regulator-name = "pp3300_disp_x";
@ -762,6 +773,7 @@ flash@0 {
spi-max-frequency = <52000000>;
spi-rx-bus-width = <2>;
spi-tx-bus-width = <2>;
vcc-supply = <&pp1800_ldo_z2>;
};
};