linux-kernel - Re: [PATCH 1/4] clk/soc: mediatek: mt8183: Bind clock driver from platform device

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Date:   Mon, 18 May 2020 17:57:25 +0200
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Chun-Kuang Hu <chunkuang.hu@...nel.org>, matthias.bgg@...nel.org
Cc:     Rob Herring <robh+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        devicetree@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        "moderated list:ARM/Mediatek SoC support" 
        <linux-mediatek@...ts.infradead.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        mtk01761 <wendell.lin@...iatek.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-clk@...r.kernel.org, Allison Randal <allison@...utok.net>,
        Enric Balletbo i Serra <enric.balletbo@...labora.com>
Subject: Re: [PATCH 1/4] clk/soc: mediatek: mt8183: Bind clock driver from
 platform device

On 18/05/2020 17:30, Chun-Kuang Hu wrote:
> Hi, Matthias:
> 
> <matthias.bgg@...nel.org> 於 2020年5月18日 週一 下午7:32寫道：
>>
>> From: Matthias Brugger <matthias.bgg@...il.com>
>>
>> The mmsys driver is now the top level entry point for the multimedia
>> system (mmsys), we bind the clock driver by creating a platform device.
>> We also bind the MediaTek DRM driver which is not yet implement and
>> therefor will errror out for now.
> 
> You may need to let CONFIG_MTK_MMSYS depends on
> CONFIG_COMMON_CLK_MT8173_MMSYS || CONFIG_COMMON_CLK_MT8183_MMSYS
> 

That will be fixed by:
https://patchwork.kernel.org/patch/11469521/

Otherwise this won't scale as we would need to add the SoCs using the mtk-mmsys
driver and this will be a lot if not all.

Regards,
Matthias

> Regards,
> Chun-Kuang.
> 
>>
>> Signed-off-by: Matthias Brugger <matthias.bgg@...il.com>
>> ---
>>
>>  drivers/clk/mediatek/clk-mt8183-mm.c | 9 ++-------
>>  drivers/soc/mediatek/mtk-mmsys.c     | 8 ++++++++
>>  2 files changed, 10 insertions(+), 7 deletions(-)
>>
>> diff --git a/drivers/clk/mediatek/clk-mt8183-mm.c b/drivers/clk/mediatek/clk-mt8183-mm.c
>> index 720c696b506d..9d60e09619c1 100644
>> --- a/drivers/clk/mediatek/clk-mt8183-mm.c
>> +++ b/drivers/clk/mediatek/clk-mt8183-mm.c
>> @@ -84,8 +84,9 @@ static const struct mtk_gate mm_clks[] = {
>>
>>  static int clk_mt8183_mm_probe(struct platform_device *pdev)
>>  {
>> +       struct device *dev = &pdev->dev;
>> +       struct device_node *node = dev->parent->of_node;
>>         struct clk_onecell_data *clk_data;
>> -       struct device_node *node = pdev->dev.of_node;
>>
>>         clk_data = mtk_alloc_clk_data(CLK_MM_NR_CLK);
>>
>> @@ -95,16 +96,10 @@ static int clk_mt8183_mm_probe(struct platform_device *pdev)
>>         return of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
>>  }
>>
>> -static const struct of_device_id of_match_clk_mt8183_mm[] = {
>> -       { .compatible = "mediatek,mt8183-mmsys", },
>> -       {}
>> -};
>> -
>>  static struct platform_driver clk_mt8183_mm_drv = {
>>         .probe = clk_mt8183_mm_probe,
>>         .driver = {
>>                 .name = "clk-mt8183-mm",
>> -               .of_match_table = of_match_clk_mt8183_mm,
>>         },
>>  };
>>
>> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
>> index cacafe23c823..783c3dd008b2 100644
>> --- a/drivers/soc/mediatek/mtk-mmsys.c
>> +++ b/drivers/soc/mediatek/mtk-mmsys.c
>> @@ -92,6 +92,10 @@ static const struct mtk_mmsys_driver_data mt8173_mmsys_driver_data = {
>>         .clk_driver = "clk-mt8173-mm",
>>  };
>>
>> +static const struct mtk_mmsys_driver_data mt8183_mmsys_driver_data = {
>> +       .clk_driver = "clk-mt8183-mm",
>> +};
>> +
>>  static unsigned int mtk_mmsys_ddp_mout_en(enum mtk_ddp_comp_id cur,
>>                                           enum mtk_ddp_comp_id next,
>>                                           unsigned int *addr)
>> @@ -339,6 +343,10 @@ static const struct of_device_id of_match_mtk_mmsys[] = {
>>                 .compatible = "mediatek,mt8173-mmsys",
>>                 .data = &mt8173_mmsys_driver_data,
>>         },
>> +       {
>> +               .compatible = "mediatek,mt8183-mmsys",
>> +               .data = &mt8183_mmsys_driver_data,
>> +       },
>>         { }
>>  };
>>
>> --
>> 2.26.2
>>
>>
>> _______________________________________________
>> Linux-mediatek mailing list
>> Linux-mediatek@...ts.infradead.org
>> http://lists.infradead.org/mailman/listinfo/linux-mediatek

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