ARM: DT: stm32f7: add pin control node for serial port pins
And remove the uart pin configuration from board initialization.
Signed-off-by: Vikas Manocha <vikas.manocha@st.com>
diff --git a/arch/arm/dts/stm32f746-disco.dts b/arch/arm/dts/stm32f746-disco.dts
index 454b515..6734f23 100644
--- a/arch/arm/dts/stm32f746-disco.dts
+++ b/arch/arm/dts/stm32f746-disco.dts
@@ -70,6 +70,12 @@
clock-frequency = <25000000>;
};
+&usart1 {
+ pinctrl-0 = <&usart1_pins_a>;
+ pinctrl-names = "default";
+ status = "okay";
+};
+
&mac {
status = "okay";
phy-mode = "rmii";
diff --git a/arch/arm/dts/stm32f746.dtsi b/arch/arm/dts/stm32f746.dtsi
index f59eca8..867f399 100644
--- a/arch/arm/dts/stm32f746.dtsi
+++ b/arch/arm/dts/stm32f746.dtsi
@@ -104,6 +104,19 @@
ranges = <0 0x40020000 0x3000>;
u-boot,dm-pre-reloc;
pins-are-numbered;
+
+ usart1_pins_a: usart1@0 {
+ pins1 {
+ pinmux = <STM32F746_PA9_FUNC_USART1_TX>;
+ bias-disable;
+ drive-push-pull;
+ slew-rate = <2>;
+ };
+ pins2 {
+ pinmux = <STM32F746_PB7_FUNC_USART1_RX>;
+ bias-disable;
+ };
+ };
};
};
};
diff --git a/board/st/stm32f746-disco/stm32f746-disco.c b/board/st/stm32f746-disco/stm32f746-disco.c
index ee1deb5..9ebc36b 100644
--- a/board/st/stm32f746-disco/stm32f746-disco.c
+++ b/board/st/stm32f746-disco/stm32f746-disco.c
@@ -27,14 +27,6 @@
.af = STM32_GPIO_AF0
};
-const struct stm32_gpio_ctl gpio_ctl_usart = {
- .mode = STM32_GPIO_MODE_AF,
- .otype = STM32_GPIO_OTYPE_PP,
- .speed = STM32_GPIO_SPEED_50M,
- .pupd = STM32_GPIO_PUPD_UP,
- .af = STM32_GPIO_AF7
-};
-
const struct stm32_gpio_ctl gpio_ctl_fmc = {
.mode = STM32_GPIO_MODE_AF,
.otype = STM32_GPIO_OTYPE_PP,
@@ -245,26 +237,11 @@
return rv;
}
-static const struct stm32_gpio_dsc usart_gpio[] = {
- {STM32_GPIO_PORT_A, STM32_GPIO_PIN_9}, /* TX */
- {STM32_GPIO_PORT_B, STM32_GPIO_PIN_7}, /* RX */
-};
-
int uart_setup_gpio(void)
{
- int i;
- int rv = 0;
-
clock_setup(GPIO_A_CLOCK_CFG);
clock_setup(GPIO_B_CLOCK_CFG);
- for (i = 0; i < ARRAY_SIZE(usart_gpio); i++) {
- rv = stm32_gpio_config(&usart_gpio[i], &gpio_ctl_usart);
- if (rv)
- goto out;
- }
-
-out:
- return rv;
+ return 0;
}
#ifdef CONFIG_ETH_DESIGNWARE