Re: [PATCH 4/5] ARM: novena: Read Ethernet MAC address from EEPROM

[Sascha Hauer <sha@pengutronix.de>]

On Wed, Jan 25, 2023 at 07:11:36PM +1100, John Watts wrote:
> On Wed, Jan 25, 2023 at 09:04:06AM +0100, Sascha Hauer wrote:
> > It looks like something is not initialized correctly yet. Normally
> > the usual suspects are pinctrl, clocks or regulators. Each of them
> > should be tied in by the deep probe mechanism as needed already, at
> > least when it's properly registered in the device tree. Clock looks
> > correct (66MHz), for the (pfuze) regulator I can't find anything in the
> > board code that configures something there later. You could verify
> > that the pinctrl has been configured already by activating the debugging
> > in drivers/pinctrl/imx-iomux-v3.c.
> > It could be something that pulls SDA low, but I don't have an idea why
> > it should work later.
> 
> My immediate guess is that it's the pinctrl, but shouldn't this be set up
> for me already? Or have I found a device tree bug?

Yes, normally it should be set up already, unless of course there is
some needed pinctrl configuration in an unrelated device tree node.

Sascha

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