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

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Message-Id: <20181018234352.26788-2-paul.walmsley@sifive.com>
Date:   Thu, 18 Oct 2018 16:43:53 -0700
From:   Paul Walmsley <paul.walmsley@...ive.com>
To:     linux-serial@...r.kernel.org
Cc:     Paul Walmsley <paul.walmsley@...ive.com>,
        devicetree@...r.kernel.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Palmer Dabbelt <palmer@...ive.com>,
        Paul Walmsley <paul@...an.com>
Subject: [PATCH 1/2] dt-bindings: serial: add documentation for the SiFive UART driver

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

Cc: linux-serial@...r.kernel.org
Cc: devicetree@...r.kernel.org
Cc: linux-riscv@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org
Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc: Rob Herring <robh+dt@...nel.org>
Cc: Mark Rutland <mark.rutland@....com>
Cc: Palmer Dabbelt <palmer@...ive.com>
Signed-off-by: Paul Walmsley <paul.walmsley@...ive.com>
Signed-off-by: Paul Walmsley <paul@...an.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@...10000 {
+	compatible = "sifive,uart0";
+	interrupt-parent = <&plic0>;
+	interrupts = <80>;
+	reg = <0x0 0x10010000 0x0 0x1000>;
+	clocks = <&prci PRCI_CLK_TLCLK>;
+};
-- 
2.19.1