Re: [PATCH 3/4] clk/soc: mediatek: mt6779: Bind clock driver from platform device

[Chun-Kuang Hu <chunkuang.hu@kernel.org>]

Hi, Matthias:

<matthias.bgg@kernel.org> 於 2020年5月18日 週一 下午7:33寫道：
>
> From: Matthias Brugger <matthias.bgg@gmail.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.
>
> Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
> ---
>
>  drivers/clk/mediatek/clk-mt6779-mm.c | 9 ++-------
>  drivers/soc/mediatek/mtk-mmsys.c     | 8 ++++++++
>  2 files changed, 10 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/clk/mediatek/clk-mt6779-mm.c b/drivers/clk/mediatek/clk-mt6779-mm.c
> index fb5fbb8e3e41..059c1a41ac7a 100644
> --- a/drivers/clk/mediatek/clk-mt6779-mm.c
> +++ b/drivers/clk/mediatek/clk-mt6779-mm.c
> @@ -84,15 +84,11 @@ static const struct mtk_gate mm_clks[] = {
>         GATE_MM1(CLK_MM_DISP_OVL_FBDC, "mm_disp_ovl_fbdc", "mm_sel", 16),
>  };
>
> -static const struct of_device_id of_match_clk_mt6779_mm[] = {
> -       { .compatible = "mediatek,mt6779-mmsys", },
> -       {}
> -};
> -
>  static int clk_mt6779_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);
>
> @@ -106,7 +102,6 @@ static struct platform_driver clk_mt6779_mm_drv = {
>         .probe = clk_mt6779_mm_probe,
>         .driver = {
>                 .name = "clk-mt6779-mm",
> -               .of_match_table = of_match_clk_mt6779_mm,
>         },
>  };
>
> diff --git a/drivers/soc/mediatek/mtk-mmsys.c b/drivers/soc/mediatek/mtk-mmsys.c
> index fee64c8d3020..dc15808cf3a3 100644
> --- a/drivers/soc/mediatek/mtk-mmsys.c
> +++ b/drivers/soc/mediatek/mtk-mmsys.c
> @@ -88,6 +88,10 @@ static const struct mtk_mmsys_driver_data mt2712_mmsys_driver_data = {
>         .clk_driver = "clk-mt2712-mm",
>  };
>
> +static const struct mtk_mmsys_driver_data mt6779_mmsys_driver_data = {
> +       .clk_driver = "clk-mt6779-mm",

This patch looks good to me, but I've one question: why drm driver
just use single "mediatek-drm" for sub driver name, but clock driver
has different name for each SoC?
Could we just use single name for clock driver such as "mediatek-clk-mm"?

Regards,
Chun-Kuang.

> +};
> +
>  static const struct mtk_mmsys_driver_data mt6797_mmsys_driver_data = {
>         .clk_driver = "clk-mt6797-mm",
>  };
> @@ -343,6 +347,10 @@ static const struct of_device_id of_match_mtk_mmsys[] = {
>                 .compatible = "mediatek,mt2712-mmsys",
>                 .data = &mt2712_mmsys_driver_data,
>         },
> +       {
> +               .compatible = "mediatek,mt6779-mmsys",
> +               .data = &mt6779_mmsys_driver_data,
> +       },
>         {
>                 .compatible = "mediatek,mt6797-mmsys",
>                 .data = &mt6797_mmsys_driver_data,
> --
> 2.26.2
>
>
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