netdev - Re: [PATCH net-next v4 1/2] net: phy: marvell10g: implement suspend/resume callbacks

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Date:   Tue, 2 Apr 2019 20:17:16 +0200
From:   Heiner Kallweit <hkallweit1@...il.com>
To:     Antoine Tenart <antoine.tenart@...tlin.com>, davem@...emloft.net,
        linux@...linux.org.uk, andrew@...n.ch, f.fainelli@...il.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, maxime.chevallier@...tlin.com,
        gregory.clement@...tlin.com, miquel.raynal@...tlin.com,
        nadavh@...vell.com, stefanc@...vell.com, mw@...ihalf.com
Subject: Re: [PATCH net-next v4 1/2] net: phy: marvell10g: implement
 suspend/resume callbacks

On 02.04.2019 15:10, Antoine Tenart wrote:
> This patch adds the suspend/resume callbacks for Marvell 10G PHYs. The
> three PCS (base-t, base-r and 1000base-x) are set in low power (the PCS
> are powered down) when the PHY isn't used.
> 
> Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
> ---
>  drivers/net/phy/marvell10g.c | 12 +++++++++++-
>  1 file changed, 11 insertions(+), 1 deletion(-)
> 
> diff --git a/drivers/net/phy/marvell10g.c b/drivers/net/phy/marvell10g.c
> index 80678919641d..9ee033c8a12b 100644
> --- a/drivers/net/phy/marvell10g.c
> +++ b/drivers/net/phy/marvell10g.c
> @@ -51,6 +51,8 @@ enum {
>  	MV_AN_STAT1000		= 0x8001, /* 1000base-T status register */
>  
>  	/* Vendor2 MMD registers */
> +	MV_V2_PORT_CTRL		= 0xf001,
> +	MV_V2_PORT_CTRL_PWRDOWN = 0x0800,

If this driver is touched again I think it would be good to change all
such constants to BIT() and GENMASK(), ideally combined with the macros
from bitfields.h. This makes it much easier to check the code against the
datasheet. Apart from that:

Reviewed-by: Heiner Kallweit <hkallweit1@...il.com>