ARM: stm32: Hog GPIO PF7 high on DHCOR 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-dhcor-u-boot.dtsi b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
index ef730a8..bd4c2ad 100644 (file)
--- a/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
+++ b/arch/arm/dts/stm32mp15xx-dhcor-u-boot.dtsi
@@ -21,6 +21,15 @@
        };
 };
 
+&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_dhcor_basic_defconfig b/configs/stm32mp15_dhcor_basic_defconfig
index 7163d0a..249646c 100644 (file)
--- a/configs/stm32mp15_dhcor_basic_defconfig
+++ b/configs/stm32mp15_dhcor_basic_defconfig
@@ -71,6 +71,7 @@ CONFIG_SPL_BLOCK_CACHE=y
 CONFIG_DFU_MMC=y
 CONFIG_DFU_RAM=y
 CONFIG_DFU_VIRT=y
+CONFIG_GPIO_HOG=y
 CONFIG_DM_HWSPINLOCK=y
 CONFIG_HWSPINLOCK_STM32=y
 CONFIG_DM_I2C=y