linux-kernel - Re: [PATCH V3] clk: imx8m: fix bus critical clk registration

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Message-ID: <20201103000657.GA31601@dragon>
Date:   Tue, 3 Nov 2020 08:06:57 +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, kernel@...gutronix.de, linux-imx@....com,
        Anson.Huang@....com, linux-clk@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        aisheng.dong@....com
Subject: Re: [PATCH V3] clk: imx8m: fix bus critical clk registration

On Sun, Nov 01, 2020 at 07:23:54PM +0800, peng.fan@....com wrote:
> From: Peng Fan <peng.fan@....com>
> 
> noc/axi/ahb are bus clk, not peripheral clk.
> Since peripheral clk has a limitation that for peripheral clock slice,
> IP clock slices must be stopped to change the clock source.
> 
> However if the bus clk is marked as critical clk peripheral, the
> assigned clock parent operation will fail.
> 
> So we added CLK_SET_PARENT_GATE flag to avoid glitch.
> 
> And add imx8m_clk_hw_composite_bus_critical for bus critical clock usage
> 
> Fixes: 936c383673b9e ("clk: imx: fix composite peripheral flags")
> Reviewed-by: Abel Vesa <abel.vesa@....com>
> Reported-by: Abel Vesa <abel.vesa@....com>
> Signed-off-by: Peng Fan <peng.fan@....com>

Do you want this be picked up as a fix for 5.10-rc or non-critical stuff
for -next?

Shawn