From: Chen-Yu Tsai <wenst@chromium.org>
To: Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>
Cc: Chen-Yu Tsai <wenst@chromium.org>,
linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: [PATCH] arm64: dts: mediatek: mt8183-kukui: Add supply for SPI NOR flash
Date: Thu, 2 Jul 2026 16:37:45 +0800 [thread overview]
Message-ID: <20260702083746.578461-1-wenst@chromium.org> (raw)
The SPI NOR flash is powered from the always on 1.8V power rail through
a load switch that is controlled by the security chip.
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
index b8d261b375d4..ed552f023cb4 100644
--- a/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8183-kukui.dtsi
@@ -980,6 +980,8 @@ w25q64dw: flash@0 {
compatible = "winbond,w25q64dw", "jedec,spi-nor";
reg = <0>;
spi-max-frequency = <25000000>;
+ /* Power actually controlled by security chip */
+ vcc-supply = <&pp1800_alw>;
};
};
--
2.55.0.rc0.799.gd6f94ed593-goog
next reply other threads:[~2026-07-02 8:38 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-07-02 8:37 Chen-Yu Tsai [this message]
2026-07-02 9:22 ` [PATCH] arm64: dts: mediatek: mt8183-kukui: Add supply for SPI NOR flash AngeloGioacchino Del Regno
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