tree 98c4854612f674f4cff667d14b7fda050ee6a5d7
parent 122e1dfe5d992788b636e803dd9aa76ba5497220
author Reka Norman <rekanorman@google.com> 1669786396 +1100
committer Eric Lai <eric_lai@quanta.corp-partner.google.com> 1670808567 +0000

mb/google/brya: Don't add MPTS to both DSDT and SSDT

commit 52ccd293d7 ("mb/google/brya: Implement shutdown function for
dGPU") started unconditionally adding MPTS to the SSDT. On variants
with HAVE_WWAN_POWER_SEQUENCE selected, MPTS is already added to the
DSDT via wwan_power.asl. The duplicate definition results in a kernel
error:
ERR kernel: [    0.109237] ACPI BIOS Error (bug): Failure creating named object [\_SB.MPTS], AE_ALREADY_EXISTS (20210730/dswload2-327)
ERR kernel: [    0.109242] ACPI Error: AE_ALREADY_EXISTS, During name lookup/catalog (20210730/psobject-220)

Don't add MPTS to the SSDT if HAVE_WWAN_POWER_SEQUENCE is selected.
There are no variants which use both, so this should only result in
empty MPTS methods being removed.

BUG=b:260380268
TEST=On pujjo, the SSDT no longer contains an empty MPTS method, there's
no kernel error, and the WWAN power-off sequence is met.

Change-Id: I9f411aae81ea87aa9c8fc7754c3709e398771a32
Signed-off-by: Reka Norman <rekanorman@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/70146
Reviewed-by: Kangheui Won <khwon@chromium.org>
Reviewed-by: Subrata Banik <subratabanik@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>