linux-kernel - [PATCH v1 18/25] arm64: dts: colibri-imx8x: Add no-1-8-v to sd-card

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Message-Id: <20230308125300.58244-19-dev@pschenker.ch>
Date:   Wed,  8 Mar 2023 13:52:52 +0100
From:   Philippe Schenker <dev@...henker.ch>
To:     devicetree@...r.kernel.org, Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>
Cc:     NXP Linux Team <linux-imx@....com>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Frank Rowand <frowand.list@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        Fabio Estevam <festevam@...il.com>,
        Philippe Schenker <philippe.schenker@...adex.com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1 18/25] arm64: dts: colibri-imx8x: Add no-1-8-v to sd-card

From: Philippe Schenker <philippe.schenker@...adex.com>

Many Colibri carrier boards are using 3.3V pull-up resistors on the
SD-Card connector. Letting it switch to 1.8V is an invalid state.

Do prevent this from happening by keeping the signaling voltage at 3.3V.

Signed-off-by: Philippe Schenker <philippe.schenker@...adex.com>
---

 arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
index 180a1d940b8d..f09a6aad6275 100644
--- a/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8x-colibri.dtsi
@@ -303,6 +303,7 @@ &usdhc2 {
 	bus-width = <4>;
 	cd-gpios = <&lsio_gpio3 9 GPIO_ACTIVE_LOW>;
 	disable-wp;
+	no-1-8-v;
 	vmmc-supply = <&reg_module_3v3>;
 };
 
-- 
2.39.2