netdev - Re: [PATCH net-next v1 1/9] net: ethernet: mtk-star-emac: store bit_clk

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Date:   Thu, 27 Jan 2022 08:47:22 +0800
From:   Biao Huang <biao.huang@...iatek.com>
To:     Bartosz Golaszewski <brgl@...ev.pl>
CC:     David Miller <davem@...emloft.net>,
        Rob Herring <robh+dt@...nel.org>,
        Fabien Parent <fparent@...libre.com>,
        Jakub Kicinski <kuba@...nel.org>,
        "Felix Fietkau" <nbd@....name>, John Crispin <john@...ozen.org>,
        Sean Wang <sean.wang@...iatek.com>,
        Mark Lee <Mark-MC.Lee@...iatek.com>,
        "Matthias Brugger" <matthias.bgg@...il.com>,
        netdev <netdev@...r.kernel.org>,
        devicetree <devicetree@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        Linux ARM <linux-arm-kernel@...ts.infradead.org>,
        "moderated list:ARM/Mediatek SoC..." 
        <linux-mediatek@...ts.infradead.org>,
        Yinghua Pan <ot_yinghua.pan@...iatek.com>,
        <srv_heupstream@...iatek.com>,
        Macpaul Lin <macpaul.lin@...iatek.com>
Subject: Re: [PATCH net-next v1 1/9] net: ethernet: mtk-star-emac: store
 bit_clk_div in compat structure

Dear Bartosz,
	Thanks for your comments!

On Tue, 2022-01-25 at 10:50 +0100, Bartosz Golaszewski wrote:
> On Thu, Jan 20, 2022 at 8:02 AM Biao Huang <biao.huang@...iatek.com>
> wrote:
> > 
> > From: Fabien Parent <fparent@...libre.com>
> > 
> > Not all the SoC are using the same clock divider. Move the divider
> > into
> > a compat structure specific to the SoCs.
> > 
> > Signed-off-by: Biao Huang <biao.huang@...iatek.com>
> > Signed-off-by: Fabien Parent <fparent@...libre.com>
> > ---
> >  drivers/net/ethernet/mediatek/mtk_star_emac.c | 23
> > +++++++++++++++----
> >  1 file changed, 19 insertions(+), 4 deletions(-)
> > 
> > diff --git a/drivers/net/ethernet/mediatek/mtk_star_emac.c
> > b/drivers/net/ethernet/mediatek/mtk_star_emac.c
> > index 1d5dd2015453..26f5020f2e9c 100644
> > --- a/drivers/net/ethernet/mediatek/mtk_star_emac.c
> > +++ b/drivers/net/ethernet/mediatek/mtk_star_emac.c
> > @@ -17,6 +17,7 @@
> >  #include <linux/module.h>
> >  #include <linux/netdevice.h>
> >  #include <linux/of.h>
> > +#include <linux/of_device.h>
> >  #include <linux/of_mdio.h>
> >  #include <linux/of_net.h>
> >  #include <linux/platform_device.h>
> > @@ -232,6 +233,10 @@ struct mtk_star_ring {
> >         unsigned int tail;
> >  };
> > 
> > +struct mtk_star_compat {
> > +       unsigned char bit_clk_div;
> > +};
> > +
> >  struct mtk_star_priv {
> >         struct net_device *ndev;
> > 
> > @@ -257,6 +262,8 @@ struct mtk_star_priv {
> >         int duplex;
> >         int pause;
> > 
> > +       const struct mtk_star_compat *compat_data;
> > +
> >         /* Protects against concurrent descriptor access. */
> >         spinlock_t lock;
> > 
> > @@ -899,7 +906,7 @@ static void mtk_star_init_config(struct
> > mtk_star_priv *priv)
> >         regmap_write(priv->regs, MTK_STAR_REG_SYS_CONF, val);
> >         regmap_update_bits(priv->regs, MTK_STAR_REG_MAC_CLK_CONF,
> >                            MTK_STAR_MSK_MAC_CLK_CONF,
> > -                          MTK_STAR_BIT_CLK_DIV_10);
> > +                          priv->compat_data->bit_clk_div);
> >  }
> > 
> >  static void mtk_star_set_mode_rmii(struct mtk_star_priv *priv)
> > @@ -1461,6 +1468,7 @@ static int mtk_star_probe(struct
> > platform_device *pdev)
> > 
> >         priv = netdev_priv(ndev);
> >         priv->ndev = ndev;
> > +       priv->compat_data = of_device_get_match_data(&pdev->dev);
> >         SET_NETDEV_DEV(ndev, dev);
> >         platform_set_drvdata(pdev, ndev);
> > 
> > @@ -1556,10 +1564,17 @@ static int mtk_star_probe(struct
> > platform_device *pdev)
> >         return devm_register_netdev(dev, ndev);
> >  }
> > 
> > +static struct mtk_star_compat mtk_star_mt8516_compat = {
> 
> static const ... ?
Yes, will fix it in next send.
> 
> > +       .bit_clk_div = MTK_STAR_BIT_CLK_DIV_10,
> > +};
> > +
> >  static const struct of_device_id mtk_star_of_match[] = {
> > -       { .compatible = "mediatek,mt8516-eth", },
> > -       { .compatible = "mediatek,mt8518-eth", },
> > -       { .compatible = "mediatek,mt8175-eth", },
> > +       { .compatible = "mediatek,mt8516-eth",
> > +         .data = &mtk_star_mt8516_compat },
> > +       { .compatible = "mediatek,mt8518-eth",
> > +         .data = &mtk_star_mt8516_compat },
> > +       { .compatible = "mediatek,mt8175-eth",
> > +         .data = &mtk_star_mt8516_compat },
> >         { }
> >  };
> >  MODULE_DEVICE_TABLE(of, mtk_star_of_match);
> > --
> > 2.25.1
> >