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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>
This commit is contained in:
Vikas Manocha 2017-02-12 10:25:51 -08:00 committed by Tom Rini
parent da4e17f24c
commit e34e19feb7
3 changed files with 20 additions and 24 deletions
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6
arch/arm/dts/stm32f746-disco.dts
View File

@ -70,6 +70,12 @@
clock-frequency = <25000000>;
};
&usart1 {
pinctrl-0 = <&usart1_pins_a>;
pinctrl-names = "default";
status = "okay";
};
&mac {
status = "okay";
phy-mode = "rmii";

13
arch/arm/dts/stm32f746.dtsi
View File

@ -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;
};
};
};
};
};

25
board/st/stm32f746-disco/stm32f746-disco.c
View File

@ -27,14 +27,6 @@ const struct stm32_gpio_ctl gpio_ctl_gpout = {
.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 @@ int dram_init(void)
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