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

Kapil Porwal uploaded patch set #4 to this change.

View Change

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 Meteorlake|    +--->|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 Meteorlake HDA PCI device
HDAS.SNDW      - Intel Meteorlake 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 <kapilporwal@google.com>
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/80/73280/4

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