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

Reviewed-by: Frank Li Frank.Li@nxp.com

---

arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi | 1 + 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi index d29710772569..1594ce9182a5 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm-verdin.dtsi @@ -464,6 +464,7 @@ reg_vdd_phy: LDO4 { };

	reg_nvcc_sd: LDO5 {

• 		regulator-always-on;
  	regulator-max-microvolt = <3300000>;
  	regulator-min-microvolt = <1800000>;
  	regulator-name = "On-module +V3.3_1.8_SD (LDO5)";
  

-- 2.39.5