From a49e6c4b820488b79ada6da9ce609fa8611d3e00 Mon Sep 17 00:00:00 2001
From: Liu Ying <Ying.Liu@freescale.com>
Date: Thu, 4 Jul 2013 17:35:46 +0800
Subject: [PATCH] ARM: imx: add common clock support for fixup mux

One register may have several fields to control some clocks. It
is possible that the read/write values of some fields may map to
different real functional values, so writing to the other fields
in the same register may break a working clock tree. A real case
is the aclk_podf field in the register 'CCM Serial Clock Multiplexer
Register 1' of i.MX6Q/SDL SoC. This patch introduces a fixup hook
for multiplexer clock which is called before writing a value to
clock registers to support this kind of multiplexer clocks.

Signed-off-by: Liu Ying <Ying.Liu@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
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