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Date:   Thu, 11 Aug 2022 01:48:56 +0000
From:   Wei Fang <wei.fang@....com>
To:     Heiner Kallweit <hkallweit1@...il.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "linux@...linux.org.uk" <linux@...linux.org.uk>,
        "davem@...emloft.net" <davem@...emloft.net>,
        "edumazet@...gle.com" <edumazet@...gle.com>,
        "kuba@...nel.org" <kuba@...nel.org>,
        "pabeni@...hat.com" <pabeni@...hat.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>
CC:     Clark Wang <xiaoning.wang@....com>
Subject: RE: [PATCH net-next] net: phy: realtek: add support for
 RTL8821F(D)(I)-VD-CG



> -----Original Message-----
> From: Heiner Kallweit <hkallweit1@...il.com>
> Sent: 2022年8月11日 3:55
> To: Wei Fang <wei.fang@....com>; andrew@...n.ch; linux@...linux.org.uk;
> davem@...emloft.net; edumazet@...gle.com; kuba@...nel.org;
> pabeni@...hat.com; netdev@...r.kernel.org
> Cc: Clark Wang <xiaoning.wang@....com>
> Subject: Re: [PATCH net-next] net: phy: realtek: add support for
> RTL8821F(D)(I)-VD-CG
> 
> On 10.08.2022 19:37, wei.fang@....com wrote:
> > From: Clark Wang <xiaoning.wang@....com>
> >
> > RTL8821F(D)(I)-VD-CG is the pin-to-pin upgrade chip from
> > RTL8821F(D)(I)-CG.
> >
> 
> Don't you mean 8211 instead of 8821 here?
> 
Sorry, It’s written error, I'll correct it in next version.

> > Add new PHY ID for this chip.
> > It does not support RTL8211F_PHYCR2 anymore, so remove the w/r
> > operation of this register.
> >
> > Signed-off-by: Clark Wang <xiaoning.wang@....com>
> > ---
> >  drivers/net/phy/realtek.c | 48
> > +++++++++++++++++++++++++++++----------
> >  1 file changed, 36 insertions(+), 12 deletions(-)
> >
> > diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c
> > index a5671ab896b3..bfde22dc85f5 100644
> > --- a/drivers/net/phy/realtek.c
> > +++ b/drivers/net/phy/realtek.c
> > @@ -70,6 +70,7 @@
> >  #define RTLGEN_SPEED_MASK			0x0630
> >
> >  #define RTL_GENERIC_PHYID			0x001cc800
> > +#define RTL_8211FVD_PHYID			0x001cc878
> >
> >  MODULE_DESCRIPTION("Realtek PHY driver");
> MODULE_AUTHOR("Johnson
> > Leung"); @@ -80,6 +81,11 @@ struct rtl821x_priv {
> >  	u16 phycr2;
> >  };
> >
> > +static bool is_rtl8211fvd(u32 phy_id)
> 
> Better add a has_phycr2 to struct rtl821x_priv. Then you have:
> 
> if (priv->has_phycr2)
> 	do_something_with(priv->phycr2);
> 

Thanks for your suggestion, I will apply this method in next version.

> > +{
> > +	return phy_id == RTL_8211FVD_PHYID;
> > +}
> > +
> >  static int rtl821x_read_page(struct phy_device *phydev)  {
> >  	return __phy_read(phydev, RTL821x_PAGE_SELECT); @@ -94,6 +100,7
> @@
> > static int rtl821x_probe(struct phy_device *phydev)  {
> >  	struct device *dev = &phydev->mdio.dev;
> >  	struct rtl821x_priv *priv;
> > +	u32 phy_id = phydev->drv->phy_id;
> >  	int ret;
> >
> >  	priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); @@ -108,13
> > +115,15 @@ static int rtl821x_probe(struct phy_device *phydev)
> >  	if (of_property_read_bool(dev->of_node, "realtek,aldps-enable"))
> >  		priv->phycr1 |= RTL8211F_ALDPS_PLL_OFF |
> RTL8211F_ALDPS_ENABLE |
> > RTL8211F_ALDPS_XTAL_OFF;
> >
> > -	ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR2);
> > -	if (ret < 0)
> > -		return ret;
> > +	if (!is_rtl8211fvd(phy_id)) {
> > +		ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR2);
> > +		if (ret < 0)
> > +			return ret;
> >
> > -	priv->phycr2 = ret & RTL8211F_CLKOUT_EN;
> > -	if (of_property_read_bool(dev->of_node, "realtek,clkout-disable"))
> > -		priv->phycr2 &= ~RTL8211F_CLKOUT_EN;
> > +		priv->phycr2 = ret & RTL8211F_CLKOUT_EN;
> > +		if (of_property_read_bool(dev->of_node, "realtek,clkout-disable"))
> > +			priv->phycr2 &= ~RTL8211F_CLKOUT_EN;
> > +	}
> >
> >  	phydev->priv = priv;
> >
> > @@ -333,6 +342,7 @@ static int rtl8211f_config_init(struct phy_device
> > *phydev)  {
> >  	struct rtl821x_priv *priv = phydev->priv;
> >  	struct device *dev = &phydev->mdio.dev;
> > +	u32 phy_id = phydev->drv->phy_id;
> >  	u16 val_txdly, val_rxdly;
> >  	int ret;
> >
> > @@ -400,12 +410,14 @@ static int rtl8211f_config_init(struct phy_device
> *phydev)
> >  			val_rxdly ? "enabled" : "disabled");
> >  	}
> >
> > -	ret = phy_modify_paged(phydev, 0xa43, RTL8211F_PHYCR2,
> > -			       RTL8211F_CLKOUT_EN, priv->phycr2);
> > -	if (ret < 0) {
> > -		dev_err(dev, "clkout configuration failed: %pe\n",
> > -			ERR_PTR(ret));
> > -		return ret;
> > +	if (!is_rtl8211fvd(phy_id)) {
> > +		ret = phy_modify_paged(phydev, 0xa43, RTL8211F_PHYCR2,
> > +				       RTL8211F_CLKOUT_EN, priv->phycr2);
> > +		if (ret < 0) {
> > +			dev_err(dev, "clkout configuration failed: %pe\n",
> > +				ERR_PTR(ret));
> > +			return ret;
> > +		}
> >  	}
> >
> >  	return genphy_soft_reset(phydev);
> > @@ -923,6 +935,18 @@ static struct phy_driver realtek_drvs[] = {
> >  		.resume		= rtl821x_resume,
> >  		.read_page	= rtl821x_read_page,
> >  		.write_page	= rtl821x_write_page,
> > +	}, {
> > +		PHY_ID_MATCH_EXACT(RTL_8211FVD_PHYID),
> > +		.name		= "RTL8211F-VD Gigabit Ethernet",
> > +		.probe		= rtl821x_probe,
> > +		.config_init	= &rtl8211f_config_init,
> > +		.read_status	= rtlgen_read_status,
> > +		.config_intr	= &rtl8211f_config_intr,
> > +		.handle_interrupt = rtl8211f_handle_interrupt,
> > +		.suspend	= genphy_suspend,
> > +		.resume		= rtl821x_resume,
> > +		.read_page	= rtl821x_read_page,
> > +		.write_page	= rtl821x_write_page,
> >  	}, {
> >  		.name		= "Generic FE-GE Realtek PHY",
> >  		.match_phy_device = rtlgen_match_phy_device,
> 
> And by the way, net-next is closed currently.

Okay, I will post the V2 when the net-next is re-opened, Thanks for your kindly reminder.

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