linux-kernel - Re: [PATCH] clk: imx: imx7d: correct video pll clock tree

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Message-ID: <CAOMZO5CYTJvaOi+7yHS+U66nfnYK7RzeUyB_W7MNf44Afkk+ow@mail.gmail.com>
Date:   Thu, 4 Jan 2018 10:59:58 -0200
From:   Fabio Estevam <festevam@...il.com>
To:     Anson Huang <Anson.Huang@....com>
Cc:     linux-kernel <linux-kernel@...r.kernel.org>,
        linux-clk@...r.kernel.org,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        Fabio Estevam <fabio.estevam@....com>,
        Shawn Guo <shawnguo@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Sascha Hauer <kernel@...gutronix.de>
Subject: Re: [PATCH] clk: imx: imx7d: correct video pll clock tree

On Wed, Jan 3, 2018 at 3:09 PM, Anson Huang <Anson.Huang@....com> wrote:
> There is a test divider and post divider in video PLL,
> test divider is placed before post divider, all clocks
> that can select parent from video PLL should be from
> post divider, NOT from pll_video_main, below are
> clock tree dump before and after this patch:
>
> Before:
> pll_video_main
>    pll_video_main_bypass
>       pll_video_main_clk
>          lcdif_pixel_src
>             lcdif_pixel_cg
>                lcdif_pixel_pre_div
>                   lcdif_pixel_post_div
>                      lcdif_pixel_root_clk
> After:
> pll_video_main
>    pll_video_main_bypass
>       pll_video_main_clk
>          pll_video_test_div
>             pll_video_post_div
>                lcdif_pixel_src
>                   lcdif_pixel_cg
>                      lcdif_pixel_pre_div
>                         lcdif_pixel_post_div
>                            lcdif_pixel_root_clk
>
> Signed-off-by: Anson Huang <Anson.Huang@....com>

Reviewed-by: Fabio Estevam <fabio.estevam@....com>