[M] Change in coreboot[master]: mb/google/rex: Enable SoundWire codecs

[Kapil Porwal (Code Review)]

Attention is currently required from: Tarun Tuli, Eran Mitrani, Subrata Banik, Kapil Porwal, Dinesh Gehlot, Ivy Jian.

Hello build bot (Jenkins), Tarun Tuli, Eran Mitrani, Subrata Banik, Paul Menzel, Dinesh Gehlot, Ivy Jian,

I'd like you to reexamine a change. Please visit

https://review.coreboot.org/c/coreboot/+/73280

to look at the new patch set (#5).

Change subject: mb/google/rex: Enable SoundWire codecs
......................................................................

mb/google/rex: Enable SoundWire codecs

Enable drivers for SoundWire codecs and define the topology in
the devicetree for the rex0 variant with the SoundWire daughter
board connected.

+------------------+         +--------------------+
|                  |         | Headphone Codec    |
| Intel Meteor Lake|    +--->|Cirrus Logic CS42L42|
|     SoundWire    |    |    |       ID 0         |
|     Controller   |    |    +--------------------+
|                  |    |
|           Link 0 +----+    +-------------------+
|                  |         | Left Speaker Amp  |
|           Link 1 |    +--->| Maxim MAX98363    |
|                  |    |    |       ID 0        |
|           Link 2 +----|    +-------------------+
|                  |    |
|           Link 3 |    |    +-------------------+
|                  |    |    | Right Speaker Amp |
+------------------+    +--->| Maxim MAX98363    |
                             |       ID 1        |
                             +-------------------+

This was tested by booting the firmware and dumping the SSDT table
to ensure that all SoundWire ACPI devices are created as expected with
the properties that are defined in coreboot under _SB.PCI0:

HDAS           - Intel Meteor Lake HDA PCI device
HDAS.SNDW      - Intel Meteor Lake SoundWire Controller
HDAS.SNDW.SW00 - Cirrus Logic CS42L42 - Headphone Codec
HDAS.SNDW.SW20 - Maxim MAX98363  - Left Speaker Amp
HDAS.SNDW.SW21 - Maxim MAX98363  - Right Speaker Amp

BUG=b:269497731
TEST=Verified SSDT for SNDW in the OS

Signed-off-by: Kapil Porwal 
Change-Id: I3e11dc642ff686ba7da23ed76332f7f10e60fade
---
M src/mainboard/google/rex/Kconfig
M src/mainboard/google/rex/variants/rex0/overridetree.cb
2 files changed, 68 insertions(+), 1 deletion(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/80/73280/5