feat(stm32_gpio): add a function to reset a pin
Add set_gpio_reset_cfg() to set a pin in its reset configuration:
analog, no-pull, speed low, and its secure configuration, thanks to
stm32_gpio_is_secure_at_reset().
Signed-off-by: Yann Gautier <yann.gautier@foss.st.com>
Change-Id: I7b73c3636859f97fcc57f81cf68b42efc727922e
diff --git a/plat/st/common/include/stm32mp_common.h b/plat/st/common/include/stm32mp_common.h
index 6183964..693640f 100644
--- a/plat/st/common/include/stm32mp_common.h
+++ b/plat/st/common/include/stm32mp_common.h
@@ -69,6 +69,7 @@
uintptr_t stm32_get_gpio_bank_base(unsigned int bank);
unsigned long stm32_get_gpio_bank_clock(unsigned int bank);
uint32_t stm32_get_gpio_bank_offset(unsigned int bank);
+bool stm32_gpio_is_secure_at_reset(unsigned int bank);
/* Return node offset for target GPIO bank ID @bank or a FDT error code */
int stm32_get_gpio_bank_pinctrl_node(void *fdt, unsigned int bank);
diff --git a/plat/st/stm32mp1/stm32mp1_private.c b/plat/st/stm32mp1/stm32mp1_private.c
index 0165cfe..d7f3dd8 100644
--- a/plat/st/stm32mp1/stm32mp1_private.c
+++ b/plat/st/stm32mp1/stm32mp1_private.c
@@ -120,6 +120,15 @@
return bank * GPIO_BANK_OFFSET;
}
+bool stm32_gpio_is_secure_at_reset(unsigned int bank)
+{
+ if (bank == GPIO_BANK_Z) {
+ return true;
+ }
+
+ return false;
+}
+
unsigned long stm32_get_gpio_bank_clock(unsigned int bank)
{
if (bank == GPIO_BANK_Z) {