linux-kernel - RE: [PATCH V3 0/4] clk: imx8m: fix glitch/mux

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Date:   Tue, 17 Sep 2019 06:20:15 +0000
From:   Peng Fan <peng.fan@....com>
To:     "mturquette@...libre.com" <mturquette@...libre.com>,
        "sboyd@...nel.org" <sboyd@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>
CC:     "kernel@...gutronix.de" <kernel@...gutronix.de>,
        dl-linux-imx <linux-imx@....com>,
        Anson Huang <anson.huang@....com>,
        Jacky Bai <ping.bai@....com>, Abel Vesa <abel.vesa@....com>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        Leonard Crestez <leonard.crestez@....com>
Subject: RE: [PATCH V3 0/4] clk: imx8m: fix glitch/mux

Hi Stephen, Shawn,

> Subject: [PATCH V3 0/4] clk: imx8m: fix glitch/mux

Sorry to ping early. Is there a chance to land this patchset in 5.3 release?

Thanks,
Peng.

> 
> From: Peng Fan <peng.fan@....com>
> 
> V3:
>  Add cover-letter
> 
> V2:
>  Added patch [2,3,4]/4 and avoid glitch when prepare
> 
> There is two bypass bit in the pll, BYPASS and EXT_BYPASS.
> There is also a restriction that to avoid glitch, need set BYPASS bit when
> RESETB changed from 0 to 1, otherwise there will be glitch.
> 
> However the BYPASS bit is also used as mux bit in imx8mm/imx8mn clk driver.
> 
> This means two paths touch the same bit which is wrong. So switch to use
> EXT_BYPASS bit as the mux.
> 
> Peng Fan (4):
>   clk: imx: pll14xx: avoid glitch when set rate
>   clk: imx: clk-pll14xx: unbypass PLL by default
>   clk: imx: imx8mm: fix pll mux bit
>   clk: imx: imx8mn: fix pll mux bit
> 
>  drivers/clk/imx/clk-imx8mm.c  | 32 ++++++++++----------------------
> drivers/clk/imx/clk-imx8mn.c  | 32 ++++++++++----------------------
> drivers/clk/imx/clk-pll14xx.c | 27 ++++++++++++++++++++++++++-
>  3 files changed, 46 insertions(+), 45 deletions(-)
> 
> --
> 2.16.4