board: stm32mp157a-dk1
device-tree:
pinctrl{
usart2_pins_b: usart2-0 {
pins1 {
pinmux = <STM32_PINMUX('F', 5, AF7)>; /* USART2_TX */
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins2 {
pinmux = <STM32_PINMUX('F', 4, AF7)>; /* USART2_RX */
bias-disable;
};
};
usart2_idle_pins_b: usart2-idle-0 {
pins1 {
pinmux = <STM32_PINMUX('F', 5, ANALOG)>; /* USART2_TX */
};
pins2 {
pinmux = <STM32_PINMUX('F', 4, AF7)>; /* USART2_RX */
bias-disable;
};
};
usart2_sleep_pins_b: usart2-sleep-0 {
pins {
pinmux = <STM32_PINMUX('F', 5, ANALOG)>, /* USART2_TX */
<STM32_PINMUX('F', 4, ANALOG)>; /* USART2_RX */ };
};
};
&usart2 {
pinctrl-names = "default", "sleep", "idle";
pinctrl-0 = <&usart2_pins_b>;
pinctrl-1 = <&usart2_sleep_pins_b>;
pinctrl-2 = <&usart2_idle_pins_b>;
status = "okay";
};
error info:
[ 0.574170] STM32 USART driver initialized
[ 0.574825] stm32-usart 4000e000.serial: failed to get alias id, errno -19
[ 0.576148] 40010000.serial: ttySTM0 at MMIO 0x40010000 (irq = 27, base_baud = 4000000) is a stm32-usart
[ 1.404594] console [ttySTM0] enabled
[ 1.408934] stm32-usart 40010000.serial: interrupt mode used for rx (no dma)
[ 1.415351] stm32-usart 40010000.serial: interrupt mode used for tx (no dma)
please give me some.
