linux-kernel - Re: stmmac: GMAC_RGSMIIIS reports bogus values

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Message-ID: <1485869040.2706.15.camel@synopsys.com>
Date:   Tue, 31 Jan 2017 13:24:00 +0000
From:   Alexey Brodkin <Alexey.Brodkin@...opsys.com>
To:     "peppe.cavallaro@...com" <peppe.cavallaro@...com>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
Subject: Re: stmmac: GMAC_RGSMIIIS reports bogus values

Hi Giuseppe,

On Tue, 2017-01-31 at 10:55 +0100, Giuseppe CAVALLARO wrote:
> On 1/27/2017 11:23 AM, Alexey Brodkin wrote:
> > 
> > That's why my initial proposal was to ignore whatever we read from this register
> > if we have MDIO bus instantiated already.
> 
> sorry for my late reply, I agree with this approach, according to the
> HW and platform configuration the driver has to understand and then
> work to use either SMA or PCS module.

I already submitted another solution which IMHO is much cleaner and appropriate,
see David has it already in master tree here:
http://git.kernel.org/cgit/linux/kernel/git/davem/net.git/commit/?id=0a764db103376cf69d04449b10688f3516cc0b88

-Alexey