netdev - Re: [PATCH] net: phy: Add RGMII_ID/TXID/RXID handling to the DP83822 driver

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Date:   Sat, 17 Jul 2021 14:34:51 +0200
From:   Marek Vasut <marex@...x.de>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     netdev@...r.kernel.org, Florian Fainelli <f.fainelli@...il.com>,
        Dan Murphy <dmurphy@...com>,
        "David S . Miller" <davem@...emloft.net>
Subject: Re: [PATCH] net: phy: Add RGMII_ID/TXID/RXID handling to the DP83822
 driver

On 7/16/21 10:16 PM, Andrew Lunn wrote:
> On Fri, Jul 16, 2021 at 08:23:28PM +0200, Marek Vasut wrote:
>> Add support for setting the internal clock shift of the PHY based on
>> the interface requirements. RX/TX/both is supported for RGMII.
>>
>> Signed-off-by: Marek Vasut <marex@...x.de>
>> Cc: Florian Fainelli <f.fainelli@...il.com>
>> Cc: Dan Murphy <dmurphy@...com>
>> Cc: David S. Miller <davem@...emloft.net>
>> ---
>>   drivers/net/phy/dp83822.c | 37 +++++++++++++++++++++++++++++++++----
>>   1 file changed, 33 insertions(+), 4 deletions(-)
>>
>> diff --git a/drivers/net/phy/dp83822.c b/drivers/net/phy/dp83822.c
>> index f7a2ec150e54..971c8d6b85d2 100644
>> --- a/drivers/net/phy/dp83822.c
>> +++ b/drivers/net/phy/dp83822.c
>> @@ -72,6 +72,10 @@
>>   #define DP83822_ANEG_ERR_INT_EN		BIT(6)
>>   #define DP83822_EEE_ERROR_CHANGE_INT_EN	BIT(7)
>>   
>> +/* RCSR bits */
>> +#define DP83822_RGMII_RX_CLOCK_SHIFT	BIT(12)
>> +#define DP83822_RGMII_TX_CLOCK_SHIFT	BIT(11)
>> +
>>   /* INT_STAT1 bits */
>>   #define DP83822_WOL_INT_EN	BIT(4)
>>   #define DP83822_WOL_INT_STAT	BIT(12)
>> @@ -326,11 +330,36 @@ static irqreturn_t dp83822_handle_interrupt(struct phy_device *phydev)
>>   
>>   static int dp8382x_disable_wol(struct phy_device *phydev)
>>   {
>> -	int value = DP83822_WOL_EN | DP83822_WOL_MAGIC_EN |
>> -		    DP83822_WOL_SECURE_ON;
>> +	u16 val = DP83822_WOL_EN | DP83822_WOL_MAGIC_EN | DP83822_WOL_SECURE_ON;
>> +
>> +	ret = phy_clear_bits_mmd(phydev, DP83822_DEVADDR,
>> +				 MII_DP83822_WOL_CFG, val);
>> +	if (ret < 0)
>> +		return ret;
>> +
>    
>> -	return phy_clear_bits_mmd(phydev, DP83822_DEVADDR,
>> -				  MII_DP83822_WOL_CFG, value);
>> +	return ret;
>>   }
> 
> This change seems to have nothing to do with RGMII delays.  Please
> split it out, so it does not distract from reviewing the real change
> here.
> 
> It also seems odd you are changing RGMII delays when disabling WOL?
> Rebase gone wrong?

Rebase gone wrong, please drop.