netdev - Re: [PATCH RFC 10/26] phy: add I2C mdio bus

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Message-ID: <20151211102524.GQ8644@n2100.arm.linux.org.uk>
Date:	Fri, 11 Dec 2015 10:25:24 +0000
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>,
	netdev@...r.kernel.org
Subject: Re: [PATCH RFC 10/26] phy: add I2C mdio bus

On Tue, Dec 08, 2015 at 10:15:08AM -0800, Florian Fainelli wrote:
> On 07/12/15 09:38, Russell King wrote:
> > Add an I2C MDIO bus bridge library, to allow phylib to access PHYs which
> > are connected to an I2C bus instead of the more conventional MDIO bus.
> > Such PHYs can be found in SFP adapters and SFF modules.
> > 
> > Signed-off-by: Russell King <rmk+kernel@....linux.org.uk>
> > ---
> [snip]
> > +static int i2c_mii_read(struct mii_bus *bus, int phy_id, int reg)
> > +{
> > +	struct i2c_adapter *i2c = bus->priv;
> > +	struct i2c_msg msgs[2];
> > +	u8 data[2], dev_addr = reg;
> > +	int bus_addr, ret;
> > +
> > +	bus_addr = 0x40 + phy_id;
> > +	if (bus_addr == 0x50 || bus_addr == 0x51)
> > +		return 0xffff;
> 
> These could deserve a local definition for these specific addresses so
> we know why there is such logic here.

This is the only comment I've received on this series so far; I'm
waiting for further comments before addressing it.

-- 
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