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 ef730a83220cca7158a3c399e1c263f087f67afa..bd4c2adc3589887961fec1bf4f6fe99bf3998a9b 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 7163d0ad1b0264cf9c89bc47ce29978374cb59a7..249646c4494ba82312f6565d2da103ded2b09501 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