[PATCH v6 10/17] serial: mpc512x: setup the PSC FIFO clock as well

[Anatolij Gustschin]

On Sat, 30 Nov 2013 23:51:30 +0100
Gerhard Sittig <gsi at denx.de> wrote:

> prepare and enable the FIFO clock upon PSC FIFO initialization,
> check for and propagage errors when enabling the PSC FIFO clock,
> disable and unprepare the FIFO clock upon PSC FIFO uninitialization
> 
> devm_{get,put}_clk() doesn't apply here, as the SoC provides a
> single FIFO component which is shared among several PSC components,
> thus the FIFO isn't associated with a device (while the PSCs are)
> 
> provide a fallback clock lookup approach in case the OF based clock
> lookup for the PSC FIFO fails, this allows for successful operation in
> the presence of an outdated device tree which lacks clock specs
> 
> Cc: Greg Kroah-Hartman <gregkh at linuxfoundation.org>
> Cc: Jiri Slaby <jslaby at suse.cz>
> Cc: linux-serial at vger.kernel.org
> Acked-by: Greg Kroah-Hartman <gregkh at linuxfoundation.org> # for v4
> Signed-off-by: Gerhard Sittig <gsi at denx.de>
> ---
> Greg, the addition since v4 is the clk_get_sys() call for the 'ipg'
> clock item (backwards compat for device trees w/o clock specs)
> 
> ---
>  drivers/tty/serial/mpc52xx_uart.c |   50 ++++++++++++++++++++++++++++++++-----
>  1 file changed, 44 insertions(+), 6 deletions(-)

applied to next. Thanks!

Anatolij