47 lines
1.3 KiB
Text
47 lines
1.3 KiB
Text
|
* STMicroelectronics STM32 USART
|
||
|
|
|
||
|
|
Required properties:
|
||
|
|
- compatible: Can be either "st,stm32-usart", "st,stm32-uart",
|
||
|
|
"st,stm32f7-usart" or "st,stm32f7-uart" depending on whether
|
||
|
|
the device supports synchronous mode and is compatible with
|
||
|
|
stm32(f4) or stm32f7.
|
||
|
|
- reg: The address and length of the peripheral registers space
|
||
|
|
- interrupts: The interrupt line of the USART instance
|
||
|
|
- clocks: The input clock of the USART instance
|
||
|
|
|
||
|
|
Optional properties:
|
||
|
|
- pinctrl: The reference on the pins configuration
|
||
|
|
- st,hw-flow-ctrl: bool flag to enable hardware flow control.
|
||
|
|
- dmas: phandle(s) to DMA controller node(s). Refer to stm32-dma.txt
|
||
|
|
- dma-names: "rx" and/or "tx"
|
||
|
|
|
||
|
|
Examples:
|
||
|
|
usart4: serial@40004c00 {
|
||
|
|
compatible = "st,stm32-uart";
|
||
|
|
reg = <0x40004c00 0x400>;
|
||
|
|
interrupts = <52>;
|
||
|
|
clocks = <&clk_pclk1>;
|
||
|
|
pinctrl-names = "default";
|
||
|
|
pinctrl-0 = <&pinctrl_usart4>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usart2: serial@40004400 {
|
||
|
|
compatible = "st,stm32-usart", "st,stm32-uart";
|
||
|
|
reg = <0x40004400 0x400>;
|
||
|
|
interrupts = <38>;
|
||
|
|
clocks = <&clk_pclk1>;
|
||
|
|
st,hw-flow-ctrl;
|
||
|
|
pinctrl-names = "default";
|
||
|
|
pinctrl-0 = <&pinctrl_usart2 &pinctrl_usart2_rtscts>;
|
||
|
|
};
|
||
|
|
|
||
|
|
usart1: serial@40011000 {
|
||
|
|
compatible = "st,stm32-usart", "st,stm32-uart";
|
||
|
|
reg = <0x40011000 0x400>;
|
||
|
|
interrupts = <37>;
|
||
|
|
clocks = <&rcc 0 164>;
|
||
|
|
dmas = <&dma2 2 4 0x414 0x0>,
|
||
|
|
<&dma2 7 4 0x414 0x0>;
|
||
|
|
dma-names = "rx", "tx";
|
||
|
|
};
|