linux-kernel - Re: [PATCH 2/2] ethernet: stmicro: stmmac: Add SGMII/QSGMII support for RK3568

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Message-ID: <Y4ZP+0koq0xIm4H9@lunn.ch>
Date:   Tue, 29 Nov 2022 19:31:23 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Chukun Pan <amadeus@....edu.cn>,
        "David S . Miller" <davem@...emloft.net>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...s.st.com>,
        Jose Abreu <joabreu@...opsys.com>,
        Eric Dumazet <edumazet@...gle.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        David Wu <david.wu@...k-chips.com>,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH 2/2] ethernet: stmicro: stmmac: Add SGMII/QSGMII support
 for RK3568

> > -static int phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
> > +static int rk_gmac_phy_power_on(struct rk_priv_data *bsp_priv, bool enable)
> >  {
> >  	struct regulator *ldo = bsp_priv->regulator;
> >  	int ret;
> > @@ -1728,6 +1909,18 @@ static struct rk_priv_data *rk_gmac_setup(struct platform_device *pdev,
> >  							"rockchip,grf");
> >  	bsp_priv->php_grf = syscon_regmap_lookup_by_phandle(dev->of_node,
> >  							    "rockchip,php-grf");
> > +	bsp_priv->xpcs = syscon_regmap_lookup_by_phandle(dev->of_node,
> > +							 "rockchip,xpcs");
> > +	if (!IS_ERR(bsp_priv->xpcs)) {
> > +		struct phy *comphy;
> > +
> > +		comphy = devm_of_phy_get(&pdev->dev, dev->of_node, NULL);
> 
> So instead of having PHY driver, you added a syscon and implemented PHY
> driver here. No. Make a proper PHY driver.

I'm also thinking there should be a proper pcs driver in drivers/net/pcs.

    Andrew