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| author | Simon Glass <sjg@chromium.org> | 2014-09-04 22:27:34 (GMT) |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2014-09-10 19:00:01 (GMT) |
| commit | 12e431b2777ce3b6940d7b7f1e32e28f58277560 (patch) | |
| tree | 12328a53b7244f5ae078d7d56b2b29a99a3f23a1 /doc | |
| parent | 8bbe33c829c83b7a6315bbc16875f79ba4adac47 (diff) | |
| download | u-boot-12e431b2777ce3b6940d7b7f1e32e28f58277560.tar.xz | |
dm: serial: Add driver model support for ns16550
Add driver model support so that ns16550 can support operation both with
and without driver model.
The driver needs a clock frequency so cannot stand alone unfortunately. The
clock frequency must be provided by a separate driver.
Signed-off-by: Simon Glass <sjg@chromium.org>
Diffstat (limited to 'doc')
| -rw-r--r-- | doc/device-tree-bindings/serial/ns16550.txt | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/serial/ns16550.txt b/doc/device-tree-bindings/serial/ns16550.txt new file mode 100644 index 0000000..ef0b9ae --- /dev/null +++ b/doc/device-tree-bindings/serial/ns16550.txt @@ -0,0 +1,10 @@ +NS16550 UART + +This UART driver supports many chip variants and is used in mamy SoCs. + +Required properties: +- compatible: "ns16550" or "nvidia,tegra20-uart" +- reg: start address and size of registers +- reg-shift: shift value indicating register size: 0=byte, 1=16bit,2=32bit etc. +- clock-frequency: input clock frequency for the UART (used to calculate the + baud rate divisor) |