[PATCH 2/2] clk: rockchip: add special approximation to fix up fractional clk's jitter

Heiko Stuebner heiko at sntech.de
Tue Aug 8 08:58:40 PDT 2017


Am Dienstag, 1. August 2017, 18:22:24 CEST schrieb Heiko Stuebner:
> From: Elaine Zhang <zhangqing at rock-chips.com>
> 
> From Rockchips fractional divider description:
>   3.1.9  Fractional divider usage
>   To get specific frequency, clocks of I2S, SPDIF, UARTcan be generated by
>   fractional divider. Generally you must set that denominator is 20 times
>   larger than numerator to generate precise clock frequency. So the
>   fractional divider applies only to generate low frequency clock like
>   I2S, UART.
> 
> Therefore add a special approximation function that handles this
> special requirement.
> 
> Signed-off-by: Elaine Zhang <zhangqing at rock-chips.com>

applied for 4.14


Heiko



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