Re: [PATCH 0/2] clk: meson: drop clk-audio-divider

From: Jerome Brunet
Date: Tue Jun 26 2018 - 07:19:59 EST


On Wed, 2018-06-20 at 12:06 +0200, Jerome Brunet wrote:
> As explained in the commit descriptions, clk-audio-divider was a poor
> solution to make sure PLL rates would be high enough while using CCF
> rate propagation to determine audio clock rates.
>
> Stopping rate propagation before the PLLs is actually simpler and provides
> better results. It also allow to get rid of clk-audio-divider.
>
> Off tree sound cards using these clocks should add the following to the
> sound card DT to properly setup the PLLs:
>
> assigned-clocks = <&clkc CLKID_MPLL2>,
> <&clkc CLKID_MPLL0>,
> <&clkc CLKID_MPLL1>;
> assigned-clock-parents = <0>, <0>, <0>;
> assigned-clock-rates = <294912000>,
> <270950400>,
> <393216000>;
>
> * MPLL2: 294912000Hz: 192Khz * 32 * 24 * 2
> used 24, 48, 96, 192Khz
>
> * MPLL0: 270950400Hz: 176.4Khz * 32 * 24 * 2
> used for 5.512, 10.025, 20.05, 44.1, 88.2 and 176,4Khz
>
> * MPLL1: 393216000Hz: 64Khz * 32 * 24 * 8
> used for 8, 16, 32 and 64Khz
>
> Jerome Brunet (2):
> clk: meson: stop rate propagation for audio clocks
> clk: meson: remove unused clk-audio-divider driver
>
> drivers/clk/meson/Makefile | 2 +-
> drivers/clk/meson/clk-audio-divider.c | 110 ----------------------------------
> drivers/clk/meson/clkc.h | 7 ---
> drivers/clk/meson/gxbb.c | 16 +++--
> 4 files changed, 8 insertions(+), 127 deletions(-)
> delete mode 100644 drivers/clk/meson/clk-audio-divider.c
>

Rebased and applied with Neil's ack.