From: Stefan Eichenberger stefan.eichenberger@toradex.com

In Linux, we allow sleep moci to be turned off when the carrier board supports it and the system is in suspend. In U-Boot, however, we want the sleep moci to be always on. So we use a gpio hog and disable the regulator. This change is necessary because we switched to upstream device tree files with commit c07bba7a2c7e ("verdin-am62: move verdin am62 to OF_UPSTREAM"). A recent upstream patch removes the gpio hog from the Linux device tree, so we need to add it to the u-boot dtsi. The following patch will remove the gpio hog from the Linux device tree: https://lore.kernel.org/linux-devicetree/20240301084901.16656-1-eichest@gmai... The U-Boot patch can be applied without it and will not break the build.

Signed-off-by: Stefan Eichenberger stefan.eichenberger@toradex.com --- arch/arm/dts/k3-am625-verdin-wifi-dev-u-boot.dtsi | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/arch/arm/dts/k3-am625-verdin-wifi-dev-u-boot.dtsi b/arch/arm/dts/k3-am625-verdin-wifi-dev-u-boot.dtsi index 7fe7ae4154..9ecb305274 100644 --- a/arch/arm/dts/k3-am625-verdin-wifi-dev-u-boot.dtsi +++ b/arch/arm/dts/k3-am625-verdin-wifi-dev-u-boot.dtsi @@ -91,6 +91,14 @@

&main_gpio0 { bootph-all; + + ctrl-sleep-moci-hog { + bootph-all; + gpio-hog; + gpios = <31 GPIO_ACTIVE_HIGH>; + line-name = "CTRL_SLEEP_MOCI#"; + output-high; + }; };

/* On-module I2C - PMIC_I2C */ @@ -165,10 +173,6 @@ status = "disabled"; };

-&verdin_ctrl_sleep_moci { - bootph-all; -}; - /* Verdin UART_2 */ &wkup_uart0 { bootph-all;