linux-kernel - [PATCH V2 0/2] arm64: dts: imx8mp-evk: Add usdhc1 for SDIO WiFi support

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Message-Id: <20260205073454.3709673-1-sherry.sun@nxp.com>
Date: Thu,  5 Feb 2026 15:34:52 +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 V2 0/2] arm64: dts: imx8mp-evk: Add usdhc1 for SDIO WiFi support

This patch set adds usdhc1 support to enable M.2 SDIO WiFi on the
i.MX8MP EVK. The M.2 connector on this board can operate in both PCIe
and SDIO modes, and SDIO-based WLAN modules require proper power control
through the same M.2 WLAN enable line (W_DISABLE1 on pin 56).

Patch 1 corrects the IOMUX configuration by enabling the pull-select bit
for the M.2 regulator GPIO, ensuring that the weak pull-up is actually
applied.
Patch 2 enables usdhc1 and associated pinctrl settings needed for SDIO
WiFi operation on the M.2 connector.

---
Changes in V2:
1. Add fixes tag for patch#1.
2. Remove the patch which renames the regulator node from reg_pcie0 to
   reg_m2_wlan, instead add second label reg_m2_wlan to simply code.
---

Sherry Sun (2):
  arm64: dts: imx8mp-evk: Enable pull select bit for PCIe regulator GPIO
    (M.2 W_DISABLE1)
  arm64: dts: imx8mp-evk: Add usdhc1 for SDIO WiFi support

 arch/arm64/boot/dts/freescale/imx8mp-evk.dts | 63 +++++++++++++++++++-
 1 file changed, 61 insertions(+), 2 deletions(-)

-- 
2.37.1