Re: [PATCH] clk: at91: sam9x60: fix programmable clock prescaler

From: Stephen Boyd
Date: Sun Jan 05 2020 - 22:07:07 EST


Quoting Eugen.Hristev@xxxxxxxxxxxxx (2019-12-10 03:25:19)
> From: Eugen Hristev <eugen.hristev@xxxxxxxxxxxxx>
>
> The prescaler works as parent rate divided by (PRES + 1) (is_pres_direct == 1)
> It does not work in the way of parent rate shifted to the right by (PRES + 1),
> which means division by 2^(PRES + 1) (is_pres_direct == 0)
> Thus is_pres_direct must be enabled for this SoC, to make the right computation.
> This field was added in
> commit 45b06682113b ("clk: at91: fix programmable clock for sama5d2")
> SAM9X60 has the same field as SAMA5D2 in the PCK
>
> Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver")
> Signed-off-by: Eugen Hristev <eugen.hristev@xxxxxxxxxxxxx>
> ---

Applied to clk-next