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Port the backlight-PWM handling from Skylake instead of the previously
used Haswell version. We use a 200Hz PWM signal for all boards. Which
is higher than the previous devicetree value, 183Hz, but that was over-
ridden by the VBIOS anyway. 200Hz is still very low, considering LED
backlights, but accurate values are unknown at this time.
Lynx Point, the PCH for Haswell and Broadwell, is a transition point
for the backlight-PWM config. On platforms with a PCH, we have:
o Before Lynx Point:
The CPU has no PWM pin and sends the PWM duty-cycle setting
to the PCH. The PCH can choose to ignore that and use its own
setting (BLM_PCH_OVERRIDE_ENABLE).
We use the CPU setting on these platforms.
o Lynx Point + Haswell:
The CPU has an additional PWM pin but can be set up to send
its setting to the PCH as before. The PCH can still choose
to ignore that.
We use the CPU setting with Haswell.
o Lynx Point + Broadwell:
The CPU can't send its setting to the PCH anymore. BLM_PCH_
OVERRIDE_ENABLE must always be set(!) if the PCH PWM pin is
used (it virtually always is).
We have to use the PCH setting in this case.
o After Lynx Point:
Same as with Broadwell, only BLM_PCH_OVERRIDE_ENABLE is
implied and the bit not implemented anymore.
Change-Id: I1d61d9b3f1802ebe18799fc4d06f1f1d3b54c924
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/35897
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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These boards require polling vs interrupts, so remove the IRQ definition to
prevent it being added to the SSDT device entry.
Test: Boot Linux on various auron and cyan variants, verify no error for
'TPM interrupt not working' present in kernel boot log.
Change-Id: Ia1139389f075934d41e823ce5190011c90c7cc88
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/27787
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
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Combine existing boards google/auron_paine and google/samus with new
ChromeOS devices auron_yuna, gandof and lulu, using their common
reference board (auron) as a base.
Chromium sources used:
firmware-yuna-6301.59.B 6ed8b9d [CHERRY-PICK: broadwell: Update to...]
firmware-gandof-6301.155.B 666f34f [gandof: modify power limiting for...]
firmware-lulu-6301.136.B 8811714 [lulu: update RAMID table]
Additionally, some minor cleanup/changes were made:
- I2C devices set to use level (vs edge) interrupt triggering
- HDA verb entries use simplified macro entry format
- correct FADT table header version
- remove unused ACPI device entries / .asl file(s)
- clean up ACPI code (e.g., trackpad on Lulu)
- adjust _CID for trackpad on Lulu in order to not load non-functional
Windows driver (does not affect Linux)
- remove unused header includes (multiple/various)
- correct I2C addresses used for SMBIOS device entries
- correct misc typos etc
The existing auron_paine samus boards are removed.
Variant setup modeled after google/slippy
Change-Id: I53436878d141715eb18b8ea5043d71e6e8728fe8
Signed-off-by: Matt DeVillier <matt.devillier@gmail.com>
Reviewed-on: https://review.coreboot.org/17917
Tested-by: build bot (Jenkins)
Reviewed-by: Martin Roth <martinroth@google.com>
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