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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>
5e1d012851