linux-kernel - [PATCH v2] arm64: dts: imx8mq-kontron-pitx-imx8m: remove vqmmc-supply node

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Date:   Tue, 14 Sep 2021 09:26:28 +0200
From:   Heiko Thiery <heiko.thiery@...il.com>
To:     devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Cc:     Krzysztof Kozlowski <krzk@...nel.org>,
        Michael Walle <michael@...le.cc>,
        Joakim Zhang <qiangqing.zhang@....com>,
        Shengjiu Wang <shengjiu.wang@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Heiko Thiery <heiko.thiery@...il.com>
Subject: [PATCH v2] arm64: dts: imx8mq-kontron-pitx-imx8m: remove vqmmc-supply node

The sw4 output (V_1V8_S0 voltage) from the PMIC is the main supply for
the 1V8 power domain. It is not only used as supply for the eMMC.
So this voltage can not be changed and is not allowed to switched off.
Therefore we do not want to provide this regulator to the SDHC driver to
control this voltage.

Fixes: 5dbadc848259 ("arm64: dts: fsl: add support for Kontron pitx-imx8m board")
Signed-off-by: Heiko Thiery <heiko.thiery@...il.com>
---

v2:
 - slightly reword the commit message (thanks Michael)
 - add Fixes tag (thanks Fabio)


 arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts b/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts
index f593e4ff62e1..436d98135ba9 100644
--- a/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mq-kontron-pitx-imx8m.dts
@@ -348,7 +348,6 @@ &usdhc1 {
 	pinctrl-0 = <&pinctrl_usdhc1>;
 	pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
 	pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
-	vqmmc-supply = <&sw4_reg>;
 	bus-width = <8>;
 	non-removable;
 	no-sd;
-- 
2.30.0