From mboxrd@z Thu Jan 1 00:00:00 1970 From: mcoquelin.stm32@gmail.com (Maxime Coquelin) Date: Tue, 7 Apr 2015 18:30:28 +0200 Subject: [PATCH v6 09/15] dt-bindings: Document the STM32 USART bindings In-Reply-To: <1428424234-28572-1-git-send-email-mcoquelin.stm32@gmail.com> References: <1428424234-28572-1-git-send-email-mcoquelin.stm32@gmail.com> Message-ID: <1428424234-28572-10-git-send-email-mcoquelin.stm32@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org This adds documentation of device tree bindings for the STM32 USART Tested-by: Chanwoo Choi Signed-off-by: Maxime Coquelin --- .../devicetree/bindings/serial/st,stm32-usart.txt | 32 ++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 Documentation/devicetree/bindings/serial/st,stm32-usart.txt diff --git a/Documentation/devicetree/bindings/serial/st,stm32-usart.txt b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt new file mode 100644 index 0000000..8480a76 --- /dev/null +++ b/Documentation/devicetree/bindings/serial/st,stm32-usart.txt @@ -0,0 +1,32 @@ +* STMicroelectronics STM32 USART + +Required properties: +- compatible: Can be either "st,stm32-usart" or "st,stm32-uart" depending on +whether the device supports synchronous mode. +- 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 +- auto-flow-control: bool flag to enable hardware flow control. + +Examples: +usart4: serial at 40004c00 { + compatible = "st,stm32-uart"; + reg = <0x40004c00 0x400>; + interrupts = <52>; + clocks = <&clk_pclk1>; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_usart4>; +}; + +usart2: serial at 40004400 { + compatible = "st,stm32-usart", "st,stm32-uart"; + reg = <0x40004400 0x400>; + interrupts = <38>; + clocks = <&clk_pclk1>; + auto-flow-control; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_usart2 &pinctrl_usart2_rtscts>; +}; -- 1.9.1