[PATCH 4/5] ARM: dts: imx6sx-sabreauto: add fec support

[Anson Huang]

Hi, Fabio

Anson Huang
Best Regards!


> -----Original Message-----
> From: Fabio Estevam [mailto:festevam at gmail.com]
> Sent: Tuesday, April 24, 2018 8:23 PM
> To: Anson Huang <anson.huang at nxp.com>
> Cc: Shawn Guo <shawnguo at kernel.org>; Sascha Hauer
> <kernel at pengutronix.de>; Fabio Estevam <fabio.estevam at nxp.com>; Rob
> Herring <robh+dt at kernel.org>; Mark Rutland <mark.rutland at arm.com>;
> dl-linux-imx <linux-imx at nxp.com>; moderated list:ARM/FREESCALE IMX / MXC
> ARM ARCHITECTURE <linux-arm-kernel at lists.infradead.org>; open list:OPEN
> FIRMWARE AND FLATTENED DEVICE TREE BINDINGS
> <devicetree at vger.kernel.org>; linux-kernel <linux-kernel at vger.kernel.org>
> Subject: Re: [PATCH 4/5] ARM: dts: imx6sx-sabreauto: add fec support
> 
> Hi Anson,
> 
> On Mon, Apr 23, 2018 at 11:09 PM, Anson Huang <anson.huang at nxp.com>
> wrote:
> 
> > Ah, yes, thanks for pointing out this issue, I just removed it and the
> > function is still working, already sent out V2 patch set, thanks.
> 
> So now maybe it is working only because the bootloader activated this GPIO,
> which is not good.
> 
> I don't have access to the mx6sx sabreauto schematics to verify  where
> &max7322 0 connects to, but it would be better to make sure that you activate
> this pin in dts if it is needed for Ethernet, without relying on the bootloader.

It is working by default hardware settings, but I agree we should do it in dts,
I found it has a lot of dependency if we want to enable the gpio reset for FEC1,
many gpio reset patch missed in upstream kernel, need patch work for MAX7322 first, so
I plan to remove FEC support in this patch set, and will upstream the MAX7322
reset patch first, then will add FEC support after MAX7322 patch done. Will send
out V3 patch to drop fec support for now, thanks.

Anson.