Add DT binding documentation for the Linux driver for the SiFive
asynchronous serial IP block. Nothing too exotic.
Cc: linux-ser...@vger.kernel.org
Cc: devicet...@vger.kernel.org
Cc: linux-ri...@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gre...@linuxfoundation.org>
Cc: Rob Herring <robh...@kernel.org>
Cc: Mark Rutland <mark.rutl...@arm.com>
Cc: Palmer Dabbelt <pal...@sifive.com>
Signed-off-by: Paul Walmsley <paul.walms...@sifive.com>
Signed-off-by: Paul Walmsley <p...@pwsan.com>
---
.../bindings/serial/sifive-serial.txt | 21 +++++++++++++++++++
1 file changed, 21 insertions(+)
create mode 100644 Documentation/devicetree/bindings/serial/sifive-serial.txt
diff --git a/Documentation/devicetree/bindings/serial/sifive-serial.txt
b/Documentation/devicetree/bindings/serial/sifive-serial.txt
new file mode 100644
index 000000000000..8982338512f5
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/sifive-serial.txt
@@ -0,0 +1,21 @@
+SiFive asynchronous serial interface (UART)
+
+Required properties:
+
+- compatible: should be "sifive,fu540-c000-uart0" or "sifive,uart0"
+- reg: address and length of the register space
+- interrupt-parent: should contain a phandle pointing to the SoC interrupt
+ controller device node that the UART interrupts are connected to
+- interrupts: Should contain the UART interrupt identifier
+- clocks: Should contain a clock identifier for the UART's parent clock
+
+
+Example:
+
+uart0: serial@10010000 {
+ compatible = "sifive,uart0";
+ interrupt-parent = <&plic0>;
+ interrupts = <80>;
+ reg = <0x0 0x10010000 0x0 0x1000>;
+ clocks = <&prci PRCI_CLK_TLCLK>;
+};
--
2.19.1
