[coreboot-gerrit] Change in coreboot[master]: mb/clevo/tgl-u: add new board L14xMU

[Michael Niewöhner (Code Review)]

Attention is currently required from: Felix Singer, Nico Huber, Michał Żygowski, Michał Kopeć, Paul Menzel, Angel Pons.
Hello Felix Singer, build bot (Jenkins), Nico Huber, Michał Żygowski, Tim Wawrzynczak, Michał Kopeć, Paul Menzel, Angel Pons, Arthur Heymans,

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

https://review.coreboot.org/c/coreboot/+/59548

to look at the new patch set (#17).

Change subject: mb/clevo/tgl-u: add new board L14xMU
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mb/clevo/tgl-u: add new board L14xMU

Add new board Clevo L14xMU (TGL).

GPIOs were configured based on schematics.

Tested and working:
 - On-board RAM (M471A1G44AB0-CWE)
 - DIMM slot (tested Crucial CT16G4SFD8266.16FJ1 / MTA16ATF2G64HZ-2G6J1)
 - Graphics (GOP driver), including HDMI
 - Keyboard
 - I2C touchpad (including interrupt)
 - TPM (with interrupt on Windows, only polling on Linux [1])
 - microSD Card reader
 - both NVME ports
 - Speakers
 - Microphone
 - Camera
 - WLAN/BT (CNVi)
 - All USB2/3 ports including Type-C
 - Thunderbolt detects my work laptop in TB Control Center
   (I couldn't test anything more due to security policy.)
 - TianoCore
 - internal flashing with flashrom on vendor firmware

Note on TPM:
The vendor sets Intel PTT to default-on in newer CSME images, which
conflicts with the dTPM. Currently, there are two ways to make it work:

1) Boot vendor firmware once to let it disable PTT via CSME firmware
    feature override.
 2) Use Intel Flash Image Tool (FIT) to set "initial power-up state" to
    disabled.

Boots fine:
 - Debian testing, unstable (Linux 5.16.14, 5.17.0-rc6)
 - Windows 10 21H2 (Build 19044.1586)

Untested:
- Thunderbolt (see above)
- Type-C DisplayPort
- S-ATA
- 3G/LTE
 - 3G/LTE depends on mising EC driver
 - tested board is non-LTE version with a second NVME port instead
 - LTE version has a USB-only M.2 slot (supported by this port)

Doesn't work:
 - TPM interrupt on Linux [1]
 - All EC related functions - EC driver is WIP
  - WLAN/BT (PCIe) - gets detected but can't be enabled
  - Fn-Keys
  - S0ix
  - UCSI
  - Fan control
  - Battery info

[1] https://lkml.org/lkml/2021/5/1/103

Change-Id: I4c4bef3827da10241e9b01e12ecc4276e131a620
Signed-off-by: Michael Niewöhner 
---
A src/mainboard/clevo/tgl-u/Kconfig
A src/mainboard/clevo/tgl-u/Kconfig.name
A src/mainboard/clevo/tgl-u/Makefile.inc
A src/mainboard/clevo/tgl-u/board_info.txt
A src/mainboard/clevo/tgl-u/bootblock.c
A src/mainboard/clevo/tgl-u/cmos.default
A src/mainboard/clevo/tgl-u/cmos.layout
A src/mainboard/clevo/tgl-u/dsdt.asl
A src/mainboard/clevo/tgl-u/include/variant/gpio.h
A src/mainboard/clevo/tgl-u/include/variant/ramstage.h
A src/mainboard/clevo/tgl-u/include/variant/romstage.h
A src/mainboard/clevo/tgl-u/ramstage.c
A src/mainboard/clevo/tgl-u/romstage.c
A src/mainboard/clevo/tgl-u/spd/samsung-M471A1G44AB0-CWE.spd.hex
A src/mainboard/clevo/tgl-u/variants/l140mu/Makefile.inc
A src/mainboard/clevo/tgl-u/variants/l140mu/board_info.txt
A src/mainboard/clevo/tgl-u/variants/l140mu/data.vbt
A src/mainboard/clevo/tgl-u/variants/l140mu/devicetree.cb
A src/mainboard/clevo/tgl-u/variants/l140mu/gpio.c
A src/mainboard/clevo/tgl-u/variants/l140mu/gpio_early.c
A src/mainboard/clevo/tgl-u/variants/l140mu/hda_verb.c
A src/mainboard/clevo/tgl-u/variants/l140mu/ramstage.c
A src/mainboard/clevo/tgl-u/variants/l140mu/romstage.c
23 files changed, 889 insertions(+), 0 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/48/59548/17