linux-kernel - [PATCH 2/3] arm64: dts: imx8mp-evk: Rename PCIe regulator to M.2 WLAN regulator

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Message-Id: <20260204023204.2382433-3-sherry.sun@nxp.com>
Date: Wed,  4 Feb 2026 10:32:03 +0800
From: Sherry Sun <sherry.sun@....com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	Frank.Li@....com,
	s.hauer@...gutronix.de,
	festevam@...il.com
Cc: imx@...ts.linux.dev,
	kernel@...gutronix.de,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org
Subject: [PATCH 2/3] arm64: dts: imx8mp-evk: Rename PCIe regulator to M.2 WLAN regulator

The M.2 connector on the i.MX8MP EVK can support both PCIe and SDIO
modes. The existing regulator node reg_pcie0 is used to control the
pin56 W_DISABLE1 on the M.2 connector, which is also required by
SDIO-based WLAN modules.

To prepare for adding M.2 SDIO WiFi support, rename the regulator node
from reg_pcie0 to reg_m2_wlan and update its pinctrl and regulator
name accordingly. This allows the same GPIO-controlled power rail to be
reused for both PCIe and SDIO WLAN cards.

No functional behavior changes other than the rename.

Signed-off-by: Sherry Sun <sherry.sun@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 22 ++++++++++----------
 1 file changed, 11 insertions(+), 11 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
index a1269c7a6cc2..f86d6b428a47 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-evk.dts
@@ -134,11 +134,11 @@ reg_audio_pwr: regulator-audio-pwr {
 		enable-active-high;
 	};
 
-	reg_pcie0: regulator-pcie {
+	reg_m2_wlan: regulator-wlan {
 		compatible = "regulator-fixed";
 		pinctrl-names = "default";
-		pinctrl-0 = <&pinctrl_pcie0_reg>;
-		regulator-name = "MPCIE_3V3";
+		pinctrl-0 = <&pinctrl_reg_wlan>;
+		regulator-name = "WLAN_EN";
 		regulator-min-microvolt = <3300000>;
 		regulator-max-microvolt = <3300000>;
 		gpio = <&gpio2 6 GPIO_ACTIVE_HIGH>;
@@ -764,8 +764,8 @@ &pcie0 {
 	pinctrl-0 = <&pinctrl_pcie0>;
 	/* This property is deprecated, use reset-gpios from the Root Port node. */
 	reset-gpio = <&gpio2 7 GPIO_ACTIVE_LOW>;
-	vpcie-supply = <&reg_pcie0>;
-	vpcie3v3aux-supply = <&reg_pcie0>;
+	vpcie-supply = <&reg_m2_wlan>;
+	vpcie3v3aux-supply = <&reg_m2_wlan>;
 	supports-clkreq;
 	status = "okay";
 };
@@ -1067,12 +1067,6 @@ MX8MP_IOMUXC_SD1_DATA5__GPIO2_IO07	0x40
 		>;
 	};
 
-	pinctrl_pcie0_reg: pcie0reggrp {
-		fsl,pins = <
-			MX8MP_IOMUXC_SD1_DATA4__GPIO2_IO06	0x140
-		>;
-	};
-
 	pinctrl_pdm: pdmgrp {
 		fsl,pins = <
 			MX8MP_IOMUXC_SAI5_RXC__AUDIOMIX_PDM_CLK		0xd6
@@ -1119,6 +1113,12 @@ MX8MP_IOMUXC_SD2_RESET_B__GPIO2_IO19	0x40
 		>;
 	};
 
+	pinctrl_reg_wlan: regwlangrp {
+		fsl,pins = <
+			MX8MP_IOMUXC_SD1_DATA4__GPIO2_IO06	0x140
+		>;
+	};
+
 	pinctrl_uart1: uart1grp {
 		fsl,pins = <
 			MX8MP_IOMUXC_UART1_RXD__UART1_DCE_RX	0x140
-- 
2.37.1