On 07/31, Sylwester Nawrocki wrote: > 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. > You mean v4.13? Sure. -- Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project -- To unsubscribe from this list: send the line "unsubscribe linux-samsung-soc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html