From: Shawn Guo <shawnguo2@yeah.net>
To: Francesco Dolcini <francesco@dolcini.it>
Cc: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Shawn Guo <shawnguo@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
Francesco Dolcini <francesco.dolcini@toradex.com>,
devicetree@vger.kernel.org, imx@lists.linux.dev,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, stable@vger.kernel.org
Subject: Re: [PATCH v1] arm64: dts: freescale: imx8mm-verdin: Keep LDO5 always on
Date: Mon, 7 Jul 2025 15:37:10 +0800 [thread overview]
Message-ID: <aGt5JoocafXbX1cX@dragon> (raw)
In-Reply-To: <20250623132545.111619-1-francesco@dolcini.it>
On Mon, Jun 23, 2025 at 03:25:45PM +0200, Francesco Dolcini wrote:
> From: Francesco Dolcini <francesco.dolcini@toradex.com>
>
> LDO5 regulator is used to power the i.MX8MM NVCC_SD2 I/O supply, that is
> used for the SD2 card interface and also for some GPIOs.
>
> When the SD card interface is not enabled the regulator subsystem could
> turn off this supply, since it is not used anywhere else, however this
> will also remove the power to some other GPIOs, for example one I/O that
> is used to power the ethernet phy, leading to a non working ethernet
> interface.
>
> [ 31.820515] On-module +V3.3_1.8_SD (LDO5): disabling
> [ 31.821761] PMIC_USDHC_VSELECT: disabling
> [ 32.764949] fec 30be0000.ethernet end0: Link is Down
>
> Fix this keeping the LDO5 supply always on.
>
> Cc: stable@vger.kernel.org
> Fixes: 6a57f224f734 ("arm64: dts: freescale: add initial support for verdin imx8m mini")
> Fixes: f5aab0438ef1 ("regulator: pca9450: Fix enable register for LDO5")
> Signed-off-by: Francesco Dolcini <francesco.dolcini@toradex.com>
Applied, thanks!
prev parent reply other threads:[~2025-07-07 7:38 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-06-23 13:25 [PATCH v1] arm64: dts: freescale: imx8mm-verdin: Keep LDO5 always on Francesco Dolcini
2025-06-23 15:14 ` Frank Li
2025-07-07 7:37 ` Shawn Guo [this message]
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