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Message-ID: <1448065205-15762-10-git-send-email-joshua.henderson@microchip.com>
Date: Fri, 20 Nov 2015 17:17:21 -0700
From: Joshua Henderson <joshua.henderson@...rochip.com>
To: <linux-kernel@...r.kernel.org>
CC: <linux-mips@...ux-mips.org>,
Andrei Pistirica <andrei.pistirica@...rochip.com>,
Joshua Henderson <joshua.henderson@...rochip.com>,
Rob Herring <robh+dt@...nel.org>,
"Pawel Moll" <pawel.moll@....com>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>, <devicetree@...r.kernel.org>
Subject: [PATCH 09/14] DEVICETREE: Add bindings for PIC32 usart driver
From: Andrei Pistirica <andrei.pistirica@...rochip.com>
Document the devicetree bindings for the USART peripheral found on
Microchip PIC32 class devices.
Signed-off-by: Andrei Pistirica <andrei.pistirica@...rochip.com>
Signed-off-by: Joshua Henderson <joshua.henderson@...rochip.com>
---
.../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
+
+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@...22000 {
+ 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>;
+ microchip,uart-has-rtscts;
+ cts-gpios = <&pioB 15 0>;
+ rts-gpios = <&pioD 1 0>;
+ };
--
1.7.9.5
--
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