[PATCH 1/2] dt-bindings: serial: add documentation for the SiFive UART driver

Paul Walmsley paul.walmsley at sifive.com
Thu Oct 18 16:43:53 PDT 2018


Add DT binding documentation for the Linux driver for the SiFive
asynchronous serial IP block.  Nothing too exotic.

Cc: linux-serial at vger.kernel.org
Cc: devicetree at vger.kernel.org
Cc: linux-riscv at lists.infradead.org
Cc: linux-kernel at vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
Cc: Rob Herring <robh+dt at kernel.org>
Cc: Mark Rutland <mark.rutland at arm.com>
Cc: Palmer Dabbelt <palmer at sifive.com>
Signed-off-by: Paul Walmsley <paul.walmsley at sifive.com>
Signed-off-by: Paul Walmsley <paul at 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 at 10010000 {
+	compatible = "sifive,uart0";
+	interrupt-parent = <&plic0>;
+	interrupts = <80>;
+	reg = <0x0 0x10010000 0x0 0x1000>;
+	clocks = <&prci PRCI_CLK_TLCLK>;
+};
-- 
2.19.1




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