Re: [PATCH 09/14] DEVICETREE: Add bindings for PIC32 usart driver

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Hello.

On 11/21/2015 3:17 AM, Joshua Henderson wrote:

From: Andrei Pistirica <andrei.pistirica@xxxxxxxxxxxxx>

Document the devicetree bindings for the USART peripheral found on
Microchip PIC32 class devices.

Signed-off-by: Andrei Pistirica <andrei.pistirica@xxxxxxxxxxxxx>
Signed-off-by: Joshua Henderson <joshua.henderson@xxxxxxxxxxxxx>
---
  .../bindings/serial/microchip,pic32-usart.txt      |   29 ++++++++++++++++++++
  1 file changed, 29 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/serial/microchip,pic32-usart.txt

diff --git a/Documentation/devicetree/bindings/serial/microchip,pic32-usart.txt b/Documentation/devicetree/bindings/serial/microchip,pic32-usart.txt
new file mode 100644
index 0000000..c87321c
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/microchip,pic32-usart.txt
@@ -0,0 +1,29 @@
+* Microchip Universal Synchronous Asynchronous Receiver/Transmitter (USART)
+
+Required properties:
+- compatible: Should be "microchip,pic32-usart"
+- reg: Should contain registers location and length
+- interrupts: Should contain interrupt
+- pinctrl: Should contain pinctrl for TX/RX/RTS/CTS

   No such prop in the example.

+
+Optional properties:
+- microchip,uart-has-rtscts : Indicate the uart has hardware flow control
+- rts-gpios: RTS pin for USP-based UART if microchip,uart-has-rtscts
+- cts-gpios: CTS pin for USP-based UART if microchip,uart-has-rtscts
+
+Example:
+	usart0: serial@1f822000 {
+		compatible = "microchip,pic32-usart";
+		reg = <0x1f822000 0x50>;
+		interrupts = <UART1_FAULT DEFAULT_INT_PRI IRQ_TYPE_NONE>,
+			     <UART1_RECEIVE_DONE DEFAULT_INT_PRI IRQ_TYPE_NONE>,
+			     <UART1_TRANSFER_DONE DEFAULT_INT_PRI IRQ_TYPE_NONE>;
+		pinctrl-names = "default";
+		pinctrl-0 = <
+			&pinctrl_uart1
+			&pinctrl_uart1_cts
+			&pinctrl_uart1_rts>;

   The above 2 props are undocumented.

[...]

MBR, Sergei

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