On Tue, Oct 13, 2015 at 4:43 AM, Maxime Ripard
[off-list ref] wrote:

The A13, unlike the A10 and A20, doesn't use a pass-through exception for
the 0 value in the pre and post dividers, but increments all the values
written in the register by one.

Add an exception for both these cases to handle them nicely.

Signed-off-by: Maxime Ripard <redacted>

Reviewed-by: Chen-Yu Tsai <redacted>