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Message-Id: <20240109121627.223017-1-dev@pschenker.ch>
Date: Tue, 9 Jan 2024 13:16:27 +0100
From: Philippe Schenker <dev@...henker.ch>
To: devicetree@...r.kernel.org,
Shawn Guo <shawnguo@...nel.org>,
Sascha Hauer <s.hauer@...gutronix.de>
Cc: Francesco Dolcini <francesco@...cini.it>,
Philippe Schenker <philippe.schenker@...ulsing.ch>,
Conor Dooley <conor+dt@...nel.org>,
Fabio Estevam <festevam@...il.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
NXP Linux Team <linux-imx@....com>,
Pengutronix Kernel Team <kernel@...gutronix.de>,
Rob Herring <robh+dt@...nel.org>,
linux-arm-kernel@...ts.infradead.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v1] arm64: dts: imx8mp-verdin: Label ldo5 and link to usdhc2
From: Philippe Schenker <philippe.schenker@...ulsing.ch>
This commit labels LDO5 as `reg_vdd_sdio` in `imx8mp-verdin.dtsi` to
facilitate changing its voltage to 1.8V, necessary for an SDIO
peripheral that requires 1.8V at default and high-speed modes.
Additionally, it links `reg_vdd_sdio` to `&usdhc2`, aligning with the
hardware configuration specified in the datasheet.
Signed-off-by: Philippe Schenker <philippe.schenker@...ulsing.ch>
---
arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
index 04f2083c4ab2..837db8961ba7 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp-verdin.dtsi
@@ -535,7 +535,7 @@ LDO4 {
regulator-name = "On-module +V3.3_ADC (LDO4)";
};
- LDO5 {
+ reg_vdd_sdio: LDO5 {
regulator-max-microvolt = <3300000>;
regulator-min-microvolt = <1800000>;
regulator-name = "On-module +V3.3_1.8_SD (LDO5)";
@@ -873,6 +873,7 @@ &usdhc2 {
pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_cd>;
pinctrl-3 = <&pinctrl_usdhc2_sleep>, <&pinctrl_usdhc2_cd_sleep>;
vmmc-supply = <®_usdhc2_vmmc>;
+ vqmmc-supply = <®_vdd_sdio>;
};
/* On-module eMMC */
--
2.34.1
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