From 12e431b2777ce3b6940d7b7f1e32e28f58277560 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Thu, 4 Sep 2014 16:27:34 -0600 Subject: 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 --- doc/device-tree-bindings/serial/ns16550.txt | 10 ++++++++++ 1 file changed, 10 insertions(+) create mode 100644 doc/device-tree-bindings/serial/ns16550.txt (limited to 'doc/device-tree-bindings/serial') diff --git a/doc/device-tree-bindings/serial/ns16550.txt b/doc/device-tree-bindings/serial/ns16550.txt new file mode 100644 index 0000000000..ef0b9aee6d --- /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) -- cgit v1.2.1