linux-kernel - Re: [PATCH v2 00/23] MediaTek clocks cleanups and improvements

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Date:   Fri, 30 Dec 2022 14:13:09 +0800
From:   Miles Chen <miles.chen@...iatek.com>
To:     <angelogioacchino.delregno@...labora.com>
CC:     <chun-jie.chen@...iatek.com>, <daniel@...rotopia.org>,
        <devicetree@...r.kernel.org>, <fparent@...libre.com>,
        <ikjn@...omium.org>, <johnson.wang@...iatek.com>,
        <jose.exposito89@...il.com>, <kernel@...labora.com>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <matthias.bgg@...il.com>,
        <miles.chen@...iatek.com>, <msp@...libre.com>,
        <mturquette@...libre.com>, <nfraprado@...labora.com>,
        <pablo.sun@...iatek.com>, <rex-bc.chen@...iatek.com>,
        <robh+dt@...nel.org>, <ryder.lee@...nel.org>,
        <sam.shih@...iatek.com>, <sboyd@...nel.org>,
        <weiyi.lu@...iatek.com>, <wenst@...omium.org>,
        <y.oudjana@...tonmail.com>, <yangyingliang@...wei.com>
Subject: Re: [PATCH v2 00/23] MediaTek clocks cleanups and improvements


> Changes in v2:
>  - Moved dt-bindings CLK_DUMMY to clk-mtk.h instead
> 
> 
> This series performs cleanups and improvements on MediaTek clock
> drivers, greatly reducing code duplication (hence also reducing
> kernel size).
> 
> There would be a lot to say about it, but summarizing:
> 
> * Propagates struct device where possible in order to introduce the
>   possibility of using Runtime PM on clock drivers as needed,
>   possibly enhancing reliability of some platforms (obviously, this
>   will do nothing unless power-domains are added to devicetree);
> 
> * Cleans up some duplicated clock(s) registration attempt(s): on
>   some platforms the 26M fixed factor clock is registered early,
>   but then upon platform_driver probe, an attempt to re-register
>   that clock was performed;
> 
> * Removes some early clock registration where possible, moving
>   everything to platform_driver clock probe;
> 
> * Breaks down the big MT8173 clock driver in multiple ones, as it's
>   already done with the others, cleans it up and adds possibility
>   possibility to compile non-boot-critical clock drivers (for 8173)
>   as modules;
> 
> * Extends the common mtk_clk_simple_probe() function to be able to
>   register multiple MediaTek clock types;
> 
> * Removes duplicated [...]_probe functions from multiple MediaTek SoC
>   clock drivers, migrating almost everything to the common functions
>   mtk_clk_simple_probe();
> 
> * Adds a .remove() callback, pointing to the common mtk_clk_simple_remove()
>   function to all clock drivers that were migrated to the common probe;
> 
> * Some more spare cleanups here and there.
> 
> All of this was manually tested on various Chromebooks (with different MTK
> SoCs) and no regression was detected.
> 
> Cheers!

I tested this v2 series on mt6779 and mt8192 without any problem.

thanks,
Miles