tree c0276be83cb5e34692eaca6ffcf45f6bf8667146
parent 9436b3e7ebcf6ef61526344d2d164820c09acbd3
author Stefan Roese <sr@denx.de> 1453208710 +0100
committer Bin Meng <bmeng.cn@gmail.com> 1453960410 +0800

misc: Add simple driver to enable the legacy UART on Winbond Super IO chips

On most x86 boards, the legacy serial ports (io address 0x3f8/0x2f8)
are provided by a superio chip connected to the LPC bus. We must
program the superio chip so that serial ports are available for us.

Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>