linux-kernel - Re: [PATCH net-next 10/10] net: stmmac: Try to get C45 PHY if everything else fails

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Message-ID: <20190627132340.GC31189@lunn.ch>
Date:   Thu, 27 Jun 2019 15:23:40 +0200
From:   Andrew Lunn <andrew@...n.ch>
To:     Jose Abreu <Jose.Abreu@...opsys.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        Joao Pinto <Joao.Pinto@...opsys.com>,
        "David S . Miller" <davem@...emloft.net>,
        Giuseppe Cavallaro <peppe.cavallaro@...com>,
        Alexandre Torgue <alexandre.torgue@...com>
Subject: Re: [PATCH net-next 10/10] net: stmmac: Try to get C45 PHY if
 everything else fails

On Thu, Jun 27, 2019 at 07:54:14AM +0000, Jose Abreu wrote:
> From: Andrew Lunn <andrew@...n.ch>
> 
> > On Wed, Jun 26, 2019 at 03:47:44PM +0200, Jose Abreu wrote:
> > > On PCI based setups that are connected to C45 PHY we won't have DT
> > > bindings specifying what's the correct PHY type.
> > 
> > You can associate a DT node to a PCI device. The driver does not have
> > to do anything special, the PCI core code does all the work.
> > 
> > As an example look at imx6q-zii-rdu2.dts, node &pcie, which has an
> > intel i210 on the pcie bus, and we need a handle to it.
> 
> That's for ARM but I'm using X86_64 which only has ACPI :/

Hi Jose

There have been some drivers gaining patches for ACPI. That is
probably the better long term solution, ask ACPI where is the PHY and
what MDIO protocol to use to talk to it.

	 Andrew