From: Robert Jarzmik <robert.jarzmik@free.fr>
Date: Sat, 27 Dec 2014 13:55:25 +0000 (+0100)
Subject: ARM: pxa: change clocks init sequence
X-Git-Tag: omap-for-v4.2/fixes-rc1^2~104^2~33^2~7
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=5e1d01285140a8cd90676ba15c06c8ec700fd618;p=pandora-kernel.git

ARM: pxa: change clocks init sequence

Since pxa clocks were ported to the clock framework, an ordering issue
appears between clocks and clocksource initialization. As a consequence,
the pxa timer clock cannot be acquired in pxa_timer, and is disabled by
clock framework because it is "unused".

The ordering issue is that in the kernel boot sequence :
  start_kernel()
    ...
    time_init()
      -> pxa_timer()
        -> here the clocksource is initialized
    ...
    rest_init()
      kernel_init()
	initcalls
	  -> here the clocks are initialized

In the current sequence, the clocks are initialized way after pxa_timer,
which cannot acquire the OSTIMER0 clock.

To solve this issue, the clocks initialization is moved to pxa_timer(),
so that clocks are initialized before clocksource for non device-tree.
For device-tree, the standard arm time_init() will take care of the
ordering.

Reviewed-by: Michael Turquette <mturquette@linaro.org>
Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
---

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