Re: [PATCH] clk: samsung: exynos5420: The EPLL rate table corrections

[Sylwester Nawrocki]

On 07/21/2017 01:19 PM, Sylwester Nawrocki wrote:
> This patch fixes values of the EPLL K coefficient and changes
> the EPLL output frequency values to match exactly what is
> possible to achieve with given M, P, S, K coefficients.
> This allows to avoid rounding errors and unexpected frequency
> being set with clk_set_rate(), due to recalc_rate returning
> different values than the PLL rate specified in the
> exynos5420_epll_24mhz_tbl table. E.g. this prevents a case
> where two consecutive clk_set_rate() calls with same argument
> result in different PLL output frequency.
>
> The PLL output frequencies have been calculated with formula:
>
> f = fxtal * (M * 2^16  + K) / (P * 2^S) / 2^16
>
> where fxtal = 24000000.
>
> Fixes: 9842452acd ("clk: samsung: exynos542x: Add EPLL rate table")
> Signed-off-by: Sylwester Nawrocki<s.nawrocki@xxxxxxxxxxx>

Stephen, Mike,

Could you apply this patch directly for v4.12-rcX?
It fixes code added in v4.12.

--
Thanks,
Sylwester