[PATCH 3/3] arm: dts: k3-am62: Bump dtsi from linux v6.5-rc1

Tom Rini trini at konsulko.com
Tue Jul 25 20:17:42 CEST 2023


On Tue, Jul 25, 2023 at 09:09:34AM -0500, Nishanth Menon wrote:
> On 15:56-20230725, Maxime Ripard wrote:
> > Hi,
> > 
> > On Tue, Jul 25, 2023 at 07:58:56AM -0500, Nishanth Menon wrote:
> > > Update the am62 and am625 device-trees from linux v6.3-rc5 This needed the followin
> > > tweaks to the u-boot specific dtsi as well:
> > > - Switch tick-timer to the main_timer as it's now defined in the main dtsi
> > > - Secure proxies are defined in Soc dtsis
> > > - Drop duplicate nodes - u-boot.dtsi is includes in r5-sk, no need for
> > >   either the definitions from main.dtsi OR duplication from u-boot.dtsi
> > > - Add mdio pins to the cpsw3g pinctrl in u-boot dtsi. It moved to a subnode in the
> > >   linux dtsi that u-boot doesn't use/support
> > > 
> > > Cc: Francesco Dolcini <francesco at dolcini.it>
> > > Cc: Sjoerd Simons <sjoerd at collabora.com>
> > > Cc: Wadim Egorov <w.egorov at phytec.de>
> > > Signed-off-by: Nishanth Menon <nm at ti.com>
> > > ---
> > > 
> > > I decided not to pick up changes from Roger and Maxime as they are'nt
> > > regression fixes, instead the fixups can be done on top of the basic
> > > sync.
> > 
> > This breaks Linux network interfaces so I very much considers this a regression.
> The current u-boot.dtsi I am confused - pinctrl mdio is still a
> problem, is'nt it?
> https://github.com/u-boot/u-boot/blob/master/arch/arm/dts/k3-am625-sk-u-boot.dtsi#L132
> The follow on fixups from both your and Roger's series should fix things
> up, correct?

I'm a little confused here too.  For each of these cases, what happens?
- Today, one of these platforms, we pass the kernel the in-memory U-Boot
  device tree.  And if this is functional for networking, how/why?
- "Tomorrow", one of these platforms, with Nishanth's series applied, we
  pass the in-memory U-Boot device tree
- Today or "Tomorrow", we continue to pass a device tree loaded from
  SD/whatever that matches the kernel.  This should work, and I think is
  what's assumed to be the only functional option right now.

-- 
Tom
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