linux-kernel - Re: [PATCH v3 06/13] net: phy: add qca8081 read

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Date:   Tue, 19 Oct 2021 20:10:15 +0800
From:   Jie Luo <quic_luoj@...cinc.com>
To:     Andrew Lunn <andrew@...n.ch>, Luo Jie <luoj@...eaurora.org>
Cc:     hkallweit1@...il.com, linux@...linux.org.uk, davem@...emloft.net,
        kuba@...nel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, sricharan@...eaurora.org
Subject: Re: [PATCH v3 06/13] net: phy: add qca8081 read_status


On 10/19/2021 5:42 AM, Andrew Lunn wrote:
>> +static int qca808x_read_status(struct phy_device *phydev)
>> +{
>> +	int ret;
>> +
>> +	ret = phy_read_mmd(phydev, MDIO_MMD_AN, MDIO_AN_10GBT_STAT);
>> +	if (ret < 0)
>> +		return ret;
>> +
>> +	linkmode_mod_bit(ETHTOOL_LINK_MODE_2500baseT_Full_BIT, phydev->lp_advertising,
>> +			ret & MDIO_AN_10GBT_STAT_LP2_5G);
>> +
> Could genphy_c45_read_lpa() be used here?
>
>        Andrew

Hi Andrew,

Thanks for the comments,  the MDIO_STAT1 of PHY does not follow the 
standard, bit0~bit6 of MDIO_STAT1 are

always 0, genphy_c45_read_lpa can't be used.