[U-Boot] [PATCH v4 07/15] sandbox: dts: Add a serial console node

[Simon Glass]

If the sandbox device tree is provided to U-Boot (with the -d flag) then it
will use the device tree version in preference to the built-in device. The
only difference is the colour.

Signed-off-by: Simon Glass <sjg at chromium.org>
---

Changes in v4:
- Add a binding for sandbox serial
- Remove pre-reloc fdt property

Changes in v3:
- Change pre-reloc fdt property to 'u-boot,dm-pre-reloc'

Changes in v2: None

 arch/sandbox/dts/sandbox.dts                       | 10 ++++++++++
 doc/device-tree-bindings/serial/sandbox-serial.txt | 13 +++++++++++++
 2 files changed, 23 insertions(+)
 create mode 100644 doc/device-tree-bindings/serial/sandbox-serial.txt

diff --git a/arch/sandbox/dts/sandbox.dts b/arch/sandbox/dts/sandbox.dts
index efffacb..26503e4 100644
--- a/arch/sandbox/dts/sandbox.dts
+++ b/arch/sandbox/dts/sandbox.dts
@@ -1,6 +1,16 @@
 /dts-v1/;
 
 / {
+	aliases {
+		console = "/serial";
+	};
+
+	/* Needs to be available prior to relocation */
+	uart0: serial {
+		compatible = "sandbox,serial";
+		sandbox,text-colour = "cyan";
+	};
+
 	triangle {
 		compatible = "demo-shape";
 		colour = "cyan";
diff --git a/doc/device-tree-bindings/serial/sandbox-serial.txt b/doc/device-tree-bindings/serial/sandbox-serial.txt
new file mode 100644
index 0000000..f429c90
--- /dev/null
+++ b/doc/device-tree-bindings/serial/sandbox-serial.txt
@@ -0,0 +1,13 @@
+Sandbox serial
+
+The sandbox serial device is an emulated device which displays its output
+on the host machine's console, and accepts input from its keyboard.
+
+Required properties:
+  compatible: "sandbox,serial"
+
+Optional properties:
+  sandbox,text-colour: If present, this is the colour of the console text.
+        Supported values are:
+        "black", "red", "green", "yellow", "blue", "megenta", "cyan",
+        "white"
-- 
2.0.0.526.g5318336