linux-kernel - Re: [PATCH 1/2] arm64: dts: imx8mp-tqma8mpql: fix LDO5 power off

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Message-ID: <aKgoPGO_CXVrH57j@dragon>
Date: Fri, 22 Aug 2025 16:20:12 +0800
From: Shawn Guo <shawnguo2@...h.net>
To: Alexander Stein <alexander.stein@...tq-group.com>
Cc: Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+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>,
	Markus Niebel <Markus.Niebel@...tq-group.com>,
	linux@...tq-group.com, devicetree@...r.kernel.org,
	imx@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] arm64: dts: imx8mp-tqma8mpql: fix LDO5 power off

On Thu, Jul 31, 2025 at 11:16:52AM +0200, Alexander Stein wrote:
> From: Markus Niebel <Markus.Niebel@...tq-group.com>
> 
> Fix SD card removal caused by automatic LDO5 power off after boot:
> 
> LDO5: disabling
> mmc1: card 59b4 removed
> EXT4-fs (mmcblk1p2): shut down requested (2)
> Aborting journal on device mmcblk1p2-8.
> JBD2: I/O error when updating journal superblock for mmcblk1p2-8.
> 
> To prevent this, add vqmmc regulator for USDHC, using a GPIO-controlled
> regulator that is supplied by LDO5. Since this is implemented on SoM but
> used on baseboards with SD-card interface, implement the functionality
> on SoM part and optionally enable it on baseboards if needed.
> 
> Fixes: 418d1d840e42 ("arm64: dts: freescale: add initial device tree for TQMa8MPQL with i.MX8MP")
> Signed-off-by: Markus Niebel <Markus.Niebel@...tq-group.com>
> Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>

Applied both, thanks!