Convert STM32 UART bindings to json-schema. Signed-off-by: Benjamin Gaignard <benjamin.gaignard@xxxxxx> --- .../devicetree/bindings/serial/st,stm32-uart.yaml | 80 ++++++++++++++++++++++ .../devicetree/bindings/serial/st,stm32-usart.txt | 57 --------------- 2 files changed, 80 insertions(+), 57 deletions(-) create mode 100644 Documentation/devicetree/bindings/serial/st,stm32-uart.yaml delete mode 100644 Documentation/devicetree/bindings/serial/st,stm32-usart.txt diff --git a/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml new file mode 100644 index 000000000000..238c44192d31 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/st,stm32-uart.yaml @@ -0,0 +1,80 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/serial/st,stm32-uart.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +maintainers: + - Erwan Le Ray <erwan.leray@xxxxxx> + +title: STMicroelectronics STM32 USART bindings + +allOf: + - $ref: rs485.yaml + +properties: + compatible: + enum: + - st,stm32-uart + - st,stm32f7-uart + - st,stm32h7-uart + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + label: + description: label associated with this uart + + st,hw-flow-ctrl: + description: enable hardware flow control + $ref: /schemas/types.yaml#/definitions/flag + + dmas: + minItems: 1 + maxItems: 2 + + dma-names: + items: + enum: [ rx, tx ] + minItems: 1 + maxItems: 2 + + wakeup-source: true + + rs485-rts-delay: true + rs485-rts-active-low: true + linux,rs485-enabled-at-boot-time: true + rs485-rx-during-tx: true + +required: + - compatible + - reg + - interrupts + - clocks + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/stm32mp1-clks.h> + usart1: serial@40011000 { + compatible = "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"; + rs485-rts-active-low; + }; + +... diff --git a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt deleted file mode 100644 index 8620f7fcbd50..000000000000 --- a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt +++ /dev/null @@ -1,57 +0,0 @@ -* STMicroelectronics STM32 USART - -Required properties: -- compatible: can be either: - - "st,stm32-uart", - - "st,stm32f7-uart", - - "st,stm32h7-uart". - depending is compatible with stm32(f4), stm32f7 or stm32h7. -- reg: The address and length of the peripheral registers space -- interrupts: - - The interrupt line for the USART instance, - - An optional wake-up interrupt. -- clocks: The input clock of the USART instance - -Optional properties: -- resets: Must contain the phandle to the reset controller. -- pinctrl: The reference on the pins configuration -- st,hw-flow-ctrl: bool flag to enable hardware flow control. -- rs485-rts-delay, rs485-rx-during-tx, rs485-rts-active-low, - linux,rs485-enabled-at-boot-time: see rs485.txt. -- dmas: phandle(s) to DMA controller node(s). Refer to stm32-dma.txt -- dma-names: "rx" and/or "tx" -- wakeup-source: bool flag to indicate this device has wakeup capabilities -- interrupt-names, if optional wake-up interrupt is used, should be: - - "event": the name for the interrupt line of the USART instance - - "wakeup" the name for the optional wake-up interrupt - - -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-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-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"; -}; -- 2.15.0
