Question
STM32MP157d USART1
Hi,
What am I doing wrong that USART1 returns -2 during the probe
kernel.dts -> PINS
usart1_pins_mx: usart1_mx-0 {
pins1 {
pinmux = <STM32_PINMUX('A', 9, AF7)>, /* USART1_TX */
<STM32_PINMUX('A', 12, AF7)>; /* USART1_RTS */
bias-disable;
drive-push-pull;
slew-rate = <0>;
};
pins2 {
pinmux = <STM32_PINMUX('B', 15, AF4)>; /* USART1_RX */
bias-disable;
};
};
usart1_sleep_pins_mx: usart1_sleep_mx-0 {
pins {
pinmux = <STM32_PINMUX('A', 9, ANALOG)>, /* USART1_TX */
<STM32_PINMUX('A', 12, ANALOG)>, /* USART1_RTS */
<STM32_PINMUX('B', 15, ANALOG)>; /* USART1_RX */
};
};
Kernel.dts -> Node
&usart1{
pinctrl-names = "default", "sleep";
pinctrl-0 = <&usart1_pins_mx &usart1_pins_z_mx>;
pinctrl-1 = <&usart1_sleep_pins_mx &usart1_sleep_pins_z_mx>;
status = "okay";
/* USER CODE BEGIN usart1 */
/* USER CODE END usart1 */
};
optee :
DECPROT(STM32MP1_ETZPC_USART1_ID, DECPROT_NS_RW, DECPROT_UNLOCK)
CLK_UART1_PLL4Q
Log:
[ 0.742385] /soc/interrupt-controller@5000d000: bank0
[ 0.742418] /soc/interrupt-controller@5000d000: bank1
[ 0.742436] /soc/interrupt-controller@5000d000: bank2
[ 0.744351] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOA bank added
[ 0.745066] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOB bank added
[ 0.749331] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOC bank added
[ 0.750171] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOD bank added
[ 0.750869] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOE bank added
[ 0.751583] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOF bank added
[ 0.752239] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOG bank added
[ 0.759262] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOH bank added
[ 0.760094] stm32mp157-pinctrl soc:pinctrl@50002000: GPIOI bank added
[ 0.760166] stm32mp157-pinctrl soc:pinctrl@50002000: Pinctrl STM32 initialized
[ 0.762019] stm32mp157-pinctrl soc:pinctrl@54004000: GPIOZ bank added
[ 0.762053] stm32mp157-pinctrl soc:pinctrl@54004000: Pinctrl STM32 initialized
[ 0.779227] 4000f000.serial: ttySTM1 at MMIO 0x4000f000 (irq = 41, base_baud = 6527435) is a stm32-usart
[ 0.781421] stm32-usart 40010000.serial: interrupt mode for rx (no dma)
[ 0.781443] stm32-usart 40010000.serial: interrupt mode for tx (no dma)
[ 0.781470] 40010000.serial: ttySTM0 at MMIO 0x40010000 (irq = 42, base_baud = 4000000) is a stm32-usart
[ 0.933488] Freeing initrd memory: 6096K
[ 0.941103] printk: console [ttySTM0] enabled
[ 2.047566] stm32-usart: probe of 5c000000.serial failed with error -2