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@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"