From 45d14c0120537a6fda4968d33bf57bfdef53e5f5 Mon Sep 17 00:00:00 2001 From: Stefan Eichenberger Date: Wed, 17 Apr 2024 10:49:02 +0200 Subject: [PATCH] arm: dts: verdin-imx8mm/imx8mp: use gpio-hog for sleep moci 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 23fe2def1edf ("verdin-imx8mm/verdin-imx8mp: move imx verdins 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/20240405160720.5977-1-eichest@gmail.com/ The U-Boot patch can be applied without it and will not break the build. Signed-off-by: Stefan Eichenberger --- arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi | 5 +++++ arch/arm/dts/imx8mp-verdin-wifi-dev-u-boot.dtsi | 4 ++++ 2 files changed, 9 insertions(+) diff --git a/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi b/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi index 38db56059d..8b397f535c 100644 --- a/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi +++ b/arch/arm/dts/imx8mm-verdin-wifi-dev-u-boot.dtsi @@ -60,6 +60,11 @@ ctrl-sleep-moci-hog { bootph-pre-ram; + gpio-hog; + output-high; + gpios = <1 GPIO_ACTIVE_HIGH>; + line-name = "CTRL_SLEEP_MOCI#"; + }; }; diff --git a/arch/arm/dts/imx8mp-verdin-wifi-dev-u-boot.dtsi b/arch/arm/dts/imx8mp-verdin-wifi-dev-u-boot.dtsi index 03f211d5f7..7b45a87450 100644 --- a/arch/arm/dts/imx8mp-verdin-wifi-dev-u-boot.dtsi +++ b/arch/arm/dts/imx8mp-verdin-wifi-dev-u-boot.dtsi @@ -58,6 +58,10 @@ ctrl-sleep-moci-hog { bootph-pre-ram; + gpio-hog; + output-high; + gpios = <29 GPIO_ACTIVE_HIGH>; + line-name = "CTRL_SLEEP_MOCI#"; }; }; -- 2.39.5