Date: Thu, 28 Sep 2017 09:37:08 +0200
From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: Andrew Lunn <andrew@lunn.ch>
Cc: robh+dt@kernel.org, mark.rutland@arm.com,
        maxime.ripard@free-electrons.com, wens@csie.org, linux@armlinux.org.uk,
        catalin.marinas@arm.com, will.deacon@arm.com, peppe.cavallaro@st.com,
        alexandre.torgue@st.com, f.fainelli@gmail.com, frowand.list@gmail.com,
        netdev@vger.kernel.org, devicetree@vger.kernel.org,
        linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org,
        linux-sunxi@googlegroups.com
Subject: Re: [PATCH v6 05/11] dt-bindings: net: dwmac-sun8i: update
 documentation about integrated PHY
Message-ID: <20170928073708.GB32676@Red>
References: <20170927073414.17361-1-clabbe.montjoie@gmail.com>
 <20170927073414.17361-6-clabbe.montjoie@gmail.com>
 <20170927140210.GE13516@lunn.ch>
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On Wed, Sep 27, 2017 at 04:02:10PM +0200, Andrew Lunn wrote:
> Hi Corentin
> 
> > +Required properties for the mdio-mux node:
> > +  - compatible = "mdio-mux"
> 
> This is too generic. Please add a more specific compatible for this
> particular mux. You can keep "mdio-mux", since that is what the MDIO
> subsystem will look for.
> 

I will add allwinner,sun8i-h3-mdio-mux

> > +Required properties of the integrated phy node:
> >  - clocks: a phandle to the reference clock for the EPHY
> >  - resets: a phandle to the reset control for the EPHY
> > +- phy-is-integrated
> 
> So the last thing you said is that the mux is not the problem
> here. Something else is locking up. Did you discover what?
> 
> I really would like phy-is-integrated to go away.
> 

I have found the problem: by enabling ephy clk/reset the timeout does not occur anymore.
So we could remove phy-is-integrated by:
Moving internal phy clk/reset handling in mdio_mux_syscon_switch_fn()
But this means:
- getting internalphy node always by manually get internal_mdio/internal_phy (and not by the given phyhandle)
- doing some unnecessary tasks (enable/scan/disable) when external_phy is needed

Regards