This patch allows google/rex mainboard to choose between "Performance"
(PL_PERFORMANCE) and "Baseline" (PL_BASELINE) power limits (PLs).
This is important for platform to meet balance between power and
performance.
The OEM design google/screebo selects baseline power limit to maintain
the balance performance in lower power.
BUG=b:307237761
TEST=Able to build and boot google/screebo.
w/o this patch:
screebo4es-rev1 ~ # cbmem -c -1 | grep "CPU PL"
[INFO ] CPU PL1 = 15 Watts
[INFO ] CPU PL2 = 57 Watts
[INFO ] CPU PL4 = 114 Watts
w/ this patch:
screebo4es-rev1 ~ # cbmem -c -1 | grep "CPU PL"
[INFO ] CPU PL1 = 15 Watts
[INFO ] CPU PL2 = 40 Watts
[INFO ] CPU PL4 = 84 Watts
Change-Id: I43debc5442ae9c01851652beba676ffc102ca27d
Signed-off-by: Subrata Banik <subratabanik@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/78661
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Kapil Porwal <kapilporwal@google.com>
Reviewed-by: Eric Lai <ericllai@google.com>
e4ac7b16ef