linux-kernel - [PATCH 4/4] arm64: dts: qcom: sc7180: disable quad mode for spi nor

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Message-ID: <20230815154412.713846-5-hsinyi@chromium.org>
Date:   Tue, 15 Aug 2023 23:31:55 +0800
From:   Hsin-Yi Wang <hsinyi@...omium.org>
To:     Tudor Ambarus <tudor.ambarus@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Bjorn Andersson <andersson@...nel.org>
Cc:     Pratyush Yadav <pratyush@...nel.org>,
        Michael Walle <michael@...le.cc>,
        "Miquel Raynal )" <miquel.raynal@...tlin.com>,
        "Richard Weinberger )" <richard@....at>,
        "Vignesh Raghavendra )" <vigneshr@...com>,
        Rob Herring <robh+dt@...nel.org>,
        linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        cros-qcom-dts-watchers@...omium.org,
        Andy Gross <agross@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>
Subject: [PATCH 4/4] arm64: dts: qcom: sc7180: disable quad mode for spi nor

Some of the SKUs are using gigadevice gd25lq64c flash chip. The chip
default enables quad mode, which results in the write protect pin set to
IO pin. In trogdor platforms, we won't use quad enable for all SKUs, so
apply the property to disable spi nor's quad mode.

Signed-off-by: Hsin-Yi Wang <hsinyi@...omium.org>
---
 arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
index 5a33e16a8b677..0806ce8e86bea 100644
--- a/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
+++ b/arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
@@ -436,6 +436,7 @@ flash@0 {
 		spi-max-frequency = <37500000>;
 		spi-tx-bus-width = <2>;
 		spi-rx-bus-width = <2>;
+		disable-quad-mode;
 	};
 };
 
-- 
2.41.0.694.ge786442a9b-goog