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Message-ID: <20220822202147.4be904de@kernel.org>
Date:   Mon, 22 Aug 2022 20:21:47 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Frank <Frank.Sae@...or-comm.com>
Cc:     Peter Geis <pgwipeout@...il.com>, Andrew Lunn <andrew@...n.ch>,
        Heiner Kallweit <hkallweit1@...il.com>,
        Russell King <linux@...linux.org.uk>,
        "David S . Miller" <davem@...emloft.net>,
        Eric Dumazet <edumazet@...gle.com>,
        Paolo Abeni <pabeni@...hat.com>, yinghong.zhang@...or-comm.com,
        fei.zhang@...or-comm.com, hua.sun@...or-comm.com,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4.4] net: phy: Add driver for Motorcomm yt8521 gigabit
 ethernet phy

On Wed, 17 Aug 2022 19:25:54 +0800 Frank wrote:
> +static int yt8521_fiber_config_aneg(struct phy_device *phydev)
> +{
> +	int err, changed;
> +	u16 adv;
> +
> +	if (phydev->autoneg != AUTONEG_ENABLE)
> +		return yt8521_fiber_setup_forced(phydev);
> +
> +	err =  ytphy_modify_ext_with_lock(phydev, YTPHY_MISC_CONFIG_REG,
> +					  YTPHY_MCR_FIBER_SPEED_MASK,
> +					  YTPHY_MCR_FIBER_1000BX);
> +	if (err < 0)
> +		return err;
> +
> +	/* enable Fiber auto sensing */
> +	err =  ytphy_modify_ext_with_lock(phydev, YT8521_LINK_TIMER_CFG2_REG,
> +					  0, YT8521_LTCR_EN_AUTOSEN);
> +	if (err < 0)
> +		return err;
> +
> +	/* Setup fiber advertisement */
> +	adv = ADVERTISE_1000XFULL | ADVERTISE_1000XPAUSE |
> +	      ADVERTISE_1000XPSE_ASYM;

Is it okay to ignore phydev->advertising and always set the same mask?

> +	err = phy_modify_changed(phydev, MII_ADVERTISE,
> +				 ADVERTISE_1000XHALF | ADVERTISE_1000XFULL |
> +				 ADVERTISE_1000XPAUSE | ADVERTISE_1000XPSE_ASYM,
> +				 adv);

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