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 e59da53..75d7526 100644
--- 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 7638234..c1c83eb 100644
--- a/configs/stm32mp15_dhcom_basic_defconfig
+++ b/configs/stm32mp15_dhcom_basic_defconfig
@@ -74,6 +74,7 @@
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