[PATCH] defconfig: espressobin: enable NET_RANDOM_ETHADDR

[Tom Rini]

On Mon, Sep 21, 2020 at 03:31:14PM +0200, Pali Rohár wrote:
> On Monday 21 September 2020 15:21:44 Marek Behun wrote:
> > On Mon, 21 Sep 2020 15:05:22 +0200
> > Pali Rohár <pali at kernel.org> wrote:
> > 
> > > Moreover CONFIG_NET_RANDOM_ETHADDR introduce another issue. In case
> > > there is no valid mac address, U-Boot generates one. But it does not
> > > pass this generates mac address to kernel and therefore kernel generates
> > > another new random mac address.
> > 
> > I think it does :) At least on A3720, if the net controller has MAC
> > address set by U-Boot, I think the same one will be used by kernel.
> 
> I mean the case when mac address is not already set in env. The case
> when CONFIG_NET_RANDOM_ETHADDR code configure mac address, when env
> variable is not set.
> 
> U-Boot set mac address into FDT file only from env.
> 
> turris_mox.c code calls eth_env_set_enetaddr() to set env with correct
> mac address.

If the random address that U-Boot generates is NOT being sent to the
kernel, that's a bug to go and fix.  That's not usually the case for
random MAC addresses generated in U-Boot.

-- 
Tom
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