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clk: shmobile: rcar-gen2: Use kick bit to allow Z clock frequency change
The Z clock frequency change is effective only after setting the kick bit located in the FRQCRB register. Without that, the CA15 CPUs clock rate will never change. Fix that by checking if the kick bit is cleared and enable it to make the clock rate change effective. The bit is cleared automatically upon completion. Signed-off-by: Benoit Cousson <[email protected]> Acked-by: Laurent Pinchart <[email protected]> Signed-off-by: Mike Turquette <[email protected]>
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