linux-kernel - Re: [PATCH] net: phy: mscc: handle the clkout control on some phy variants

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Date:   Mon, 8 Jun 2020 18:36:29 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Heiko Stuebner <heiko@...ech.de>
Cc:     davem@...emloft.net, kuba@...nel.org, robh+dt@...nel.org,
        f.fainelli@...il.com, hkallweit1@...il.com, linux@...linux.org.uk,
        netdev@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        christoph.muellner@...obroma-systems.com,
        Heiko Stuebner <heiko.stuebner@...obroma-systems.com>
Subject: Re: [PATCH] net: phy: mscc: handle the clkout control on some phy
 variants

On Mon, Jun 08, 2020 at 06:02:07PM +0200, Heiko Stuebner wrote:
> +static int vsc8531_probe(struct phy_device *phydev)
> +{
> +	struct vsc8531_private *vsc8531;
> +	int rate_magic;
> +	u32 default_mode[2] = {VSC8531_LINK_1000_ACTIVITY,
> +	   VSC8531_LINK_100_ACTIVITY};
> +
> +	rate_magic = vsc85xx_edge_rate_magic_get(phydev);
> +	if (rate_magic < 0)
> +		return rate_magic;
> +
> +	vsc8531 = devm_kzalloc(&phydev->mdio.dev, sizeof(*vsc8531), GFP_KERNEL);
> +	if (!vsc8531)
> +		return -ENOMEM;
> +
> +	phydev->priv = vsc8531;
> +
> +	vsc8531->rate_magic = rate_magic;
> +	vsc8531->nleds = 2;
> +	vsc8531->supp_led_modes = VSC85XX_SUPP_LED_MODES;
> +	vsc8531->hw_stats = vsc85xx_hw_stats;
> +	vsc8531->nstats = ARRAY_SIZE(vsc85xx_hw_stats);
> +	vsc8531->stats = devm_kcalloc(&phydev->mdio.dev, vsc8531->nstats,
> +				      sizeof(u64), GFP_KERNEL);
> +	if (!vsc8531->stats)
> +		return -ENOMEM;
> +
> +	vsc8531_dt_clkout_rate_get(phydev);
> +
> +	return vsc85xx_dt_led_modes_get(phydev, default_mode);
> +}

Hi Heiko

The clock change itself looks O.K. Maybe we want to standardize on the
name of the DT property, since it could be shared across all PHYs
which have a clock output?

Could you add another patch first which refactors the _probe()
functions. There is a lot of repeated code which could be put into a
helper.

Thanks
	Andrew