tree 40701d601b271fc8ca9df87b8788f7d490479abc
parent be32c0cf0462c36f482b5ddcff1d8371be1e183c
author Soeren Grunewald <soeren.grunewald@desy.de> 1434007505 +0200
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1434155680 -0700

serial: 8250_pci: Correct uartclk for xr17v35x expansion chips

The internal clock of the master chip, which is usually 125MHz, is only half
(62.5MHz) for the slave chips. So we have to adjust the uartclk for all the
slave ports. Therefor we add a new function to determine if a slave chip is
present and update pci_xr17v35x_setup accordingly.

Signed-off-by: Soeren Grunewald <soeren.grunewald@desy.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>