From: Stefan Eichenberger <stefan.eichenber...@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-eich...@gmail.com/
The U-Boot patch can be applied without it and will not break the build.
Signed-off-by: Stefan Eichenberger <stefan.eichenber...@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;
--
2.40.1
