[PATCH v2 1/2] dt-bindings: serial: add documentation for the SiFive UART driver

From: Paul Walmsley <paul.walmsley@sifive.com>
To: linux-serial@vger.kernel.org
Cc: Paul Walmsley <paul.walmsley@sifive.com>,
	devicetree@vger.kernel.org, linux-riscv@lists.infradead.org,
	linux-kernel@vger.kernel.org,
	Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	Palmer Dabbelt <palmer@sifive.com>,
	Paul Walmsley <paul@pwsan.com>
Subject: [PATCH v2 1/2] dt-bindings: serial: add documentation for the SiFive UART driver
Date: Fri, 19 Oct 2018 11:48:27 -0700	[thread overview]
Message-ID: <20181019184827.12351-2-paul.walmsley@sifive.com> (raw)
In-Reply-To: <20181019184827.12351-1-paul.walmsley@sifive.com>

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

Cc: linux-serial@vger.kernel.org
Cc: devicetree@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Cc: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Palmer Dabbelt <palmer@sifive.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Paul Walmsley <paul.walmsley@sifive.com>
Signed-off-by: Paul Walmsley <paul@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

