linux-kernel - Re: [PATCH RESEND v3 0/4] clk: imx: imx8m: fix a53 cpu clock

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Message-ID: <20200224033911.GH27688@dragon>
Date:   Mon, 24 Feb 2020 11:39:11 +0800
From:   Shawn Guo <shawnguo@...nel.org>
To:     peng.fan@....com
Cc:     sboyd@...nel.org, s.hauer@...gutronix.de, festevam@...il.com,
        abel.vesa@....com, leonard.crestez@....com, kernel@...gutronix.de,
        linux-imx@....com, aisheng.dong@....com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        anson.huang@....com, ping.bai@....com, l.stach@...gutronix.de
Subject: Re: [PATCH RESEND v3 0/4] clk: imx: imx8m: fix a53 cpu clock

On Wed, Feb 19, 2020 at 06:17:05PM +0800, peng.fan@....com wrote:
> From: Peng Fan <peng.fan@....com>
> 
> V3:
>  Rebased to Shawn's for-next branch
>  Typo fix
> 
> V2:
>  Fix i.MX8MP build
>  Update cover letter, i.MX7D not have this issue 
> 
> The A53 CCM clk root only accepts input up to 1GHz, CCM A53 root
> signoff timing is 1Ghz, however the A53 core which sources from CCM
> root could run above 1GHz which voilates the CCM.
> 
> There is a CORE_SEL slice before A53 core, we need configure the
> CORE_SEL slice source from ARM PLL, not A53 CCM clk root.
> 
> The A53 CCM clk root should only be used when need to change ARM PLL
> frequency.
> 
> Peng Fan (4):
>   clk: imx: imx8mq: fix a53 cpu clock
>   clk: imx: imx8mm: fix a53 cpu clock
>   clk: imx: imx8mn: fix a53 cpu clock
>   clk: imx: imx8mp: fix a53 cpu clock

Applied all, thanks.