From: Boris BREZILLON <boris.brezillon@free-electrons.com>
Date: Tue, 2 Sep 2014 07:50:17 +0000 (+0200)
Subject: clk: at91: rework rm9200 USB clock to propagate set_rate to the parent clk
X-Git-Tag: omap-for-v3.19/prcm-cleanup~65^2~34
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=13a6073d4c5db3103011eebe8c68b049323ced20;p=pandora-kernel.git

clk: at91: rework rm9200 USB clock to propagate set_rate to the parent clk

The RM9200 USB clock is actually connected to a single parent (the PLLB)
on which we can apply a specific divider.
The USB clock divider does not allow for fine grained control on the USB
clock frequency, hence propagating the set_rate request to the parent is
the only choice we have to properly configure the USB clock rate.

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Reported-by: Gaël PORTAY <gael.portay@gmail.com>
Tested-by: Gaël PORTAY <gael.portay@gmail.com>
Signed-off-by: Mike Turquette <mturquette@linaro.org>
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