serial: fdt: add device tree support for pl01x

[u-boot] / doc / device-tree-bindings / serial / pl01x.txt

diff --git a/doc/device-tree-bindings/serial/pl01x.txt b/doc/device-tree-bindings/serial/pl01x.txt
new file mode 100644 (file)
index 0000000..61c27d1
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+++ b/doc/device-tree-bindings/serial/pl01x.txt
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+* ARM AMBA Primecell PL011 & PL010 serial UART
+
+Required properties:
+- compatible: must be "arm,primecell", "arm,pl011" or "arm,pl010"
+- reg: exactly one register range with length 0x1000
+- clock: input clock frequency for the UART (used to calculate the baud
+  rate divisor)