linux-kernel - Re: [PATCH 0/5] Add phy support for AM335X platform using Generic PHy framework

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Date:	Tue, 09 Jul 2013 09:13:04 +0200
From:	Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:	Ezequiel Garcia <ezequiel.garcia@...e-electrons.com>
CC:	George Cherian <george.cherian@...com>, linux-usb@...r.kernel.org,
	balbi@...com, linux-kernel@...r.kernel.org,
	gregkh@...uxfoundation.org, linux-omap@...r.kernel.org,
	kishon@...com
Subject: Re: [PATCH 0/5] Add phy support for AM335X platform using Generic
 PHy framework

On 07/08/2013 10:34 PM, Ezequiel Garcia wrote:
> Hi,

Hi,

> On Mon, Jul 08, 2013 at 09:44:33PM +0200, Sebastian Andrzej Siewior wrote:
> 
>> We need two nodes each one with a glue layer and a musb child node. The
>> instances crap in kernel has to vanish. Also that means your phy nodes
>> are wrong. This is not musb with two ports but two musb instances each
>> with one port.
>>
> 
> I agree completely. The current DT representation looks definitely odd,
> and we should be looking at improving it.
> 
> I wonder if this is now possible, given the DT is supposed to be stable ABI.

I posted this [0] and Felipe + Benoit were pro change. I am still not
sure if this is okay or just one glue layer per instance so I delay
this until I am sure. Stable or not, what currently have in is beyond
broken and it can't be fixed in kernel.
I would add some code to check for the old nodes and give a proper
warning and how to react. This should reduce the pain full search.

[0]
http://git.breakpoint.cc/cgit.cgi/bigeasy/linux.git/commit/?h=am335x_usb&id=0a60cd77ee50edd8cd07cbd699ed67b2c4b2ab93

Sebastian
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