Since we don't have any VPD defined on this board, supply a default
password hash via the device tree instead.
Also, specify the path to external USB port, so that Infix will pick
it up in ietf-hardware.
Provide a patched device tree that:
- Uses the correct phy-mode for eth2, allowing it to be probed
properly
- Wires up the interrupt signal to the GPIO expander, so that the SFP
cage's I/O lines can be configured as interrupts, rather than having
to poll them
Only port 2 has an SGMII compatible SERDES. When referencing the
SERDES (comphy), the second argument must contain the port number in
order for the comphy driver to pick the correct configuration.
Empirical studies shows that the surge protection on the alder board
is not compatible with Energy Efficient Ethernet.
Root cause has not yet been determined.
On the P2's the only reasonable way (in terms of hardware patching
effort) of driving the LEDs is to have the green LEDs at the top and
the yellow ones at the bottom.
Turns out that the gpio-charger doesn't have polled fallback if the
GPIO pin can't function as an interrupt controller.
Fortunately, we have access to the IRQ pin, so we can just use that
for now and leave the driver as-is.
Upstream device trees specify regular PSCI support for SparX-5i, but
the U-Boot that Microchip ships does not actually support it.
Therefore, wrap the upstream version to disable PSCI and revert to
spin tables for SMP bringup.
