ARM: stm32: Hog GPIO PF7 high on DHCOM to unlock SPI NOR nWP

The SPI NOR nWP line is connected to GPIO PF7 on the SoM,
pull the GPIO line high by default to clear SPI NOR WP.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Patrick Delaunay <patrick.delaunay@st.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@st.com>

diff --git a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
index e59da53502c13027e996f352f232551363361716..75d75266e858cd179dfd88848845cdfd9300021b 100644 (file)
--- a/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcom-u-boot.dtsi
@@ -49,6 +49,15 @@
        };
 };
 
+&gpiof {
+       snor-nwp {
+               gpio-hog;
+               gpios = <7 0>;
+               output-high;
+               line-name = "spi-nor-nwp";
+       };
+};
+
 &i2c4 {
        u-boot,dm-pre-reloc;
 };

diff --git a/configs/stm32mp15_dhcom_basic_defconfig b/configs/stm32mp15_dhcom_basic_defconfig
index 76382340735a3381f74c575c389b422fcbb9a567..c1c83eb4fc32467b5cf1d14eda31eff1777e3a09 100644 (file)
--- a/configs/stm32mp15_dhcom_basic_defconfig
+++ b/configs/stm32mp15_dhcom_basic_defconfig
@@ -74,6 +74,7 @@ CONFIG_DFU_MMC=y
 CONFIG_DFU_RAM=y
 CONFIG_DFU_VIRT=y
 CONFIG_SET_DFU_ALT_INFO=y
+CONFIG_GPIO_HOG=y
 CONFIG_DM_HWSPINLOCK=y
 CONFIG_HWSPINLOCK_STM32=y
 CONFIG_DM_I2C=y