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Thu, 02 Jul 2026 01:37:53 -0700 (PDT) Received: from wenstp920.tpe.corp.google.com ([2a00:79e0:201d:8:7869:7870:7da3:7288]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ca9a8fac27sm10102495ad.20.2026.07.02.01.37.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 02 Jul 2026 01:37:52 -0700 (PDT) From: Chen-Yu Tsai To: Matthias Brugger , AngeloGioacchino Del Regno Cc: Chen-Yu Tsai , 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 Message-ID: <20260702083746.578461-1-wenst@chromium.org> X-Mailer: git-send-email 2.55.0.rc0.799.gd6f94ed593-goog MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260702_013754_733986_3336ADCB X-CRM114-Status: GOOD ( 11.26 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 --- 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