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mb/google/skyrim: Set winterhold SPI fast read speed to 100MHz 

Winterhold runs with the SPI fast read speed set to 100MHz.  This
decreases boot time by roughly 100ms.

BUG=None
TEST=Examine boot times.

Signed-off-by: Martin Roth <gaumless@gmail.com>
Change-Id: I879e17fb0212910c7f90ba0e78ee16bea8b7cffa
Reviewed-on: https://review.coreboot.org/c/coreboot/+/71888
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Matt DeVillier <matt.devillier@amd.corp-partner.google.com>
This commit is contained in:
Martin Roth 2023-01-13 22:05:59 -07:00 committed by Elyes Haouas
parent 7d1995cc68
commit c29340df3c
1 changed files with 2 additions and 0 deletions
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src/mainboard/google/skyrim/Kconfig
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@ -125,6 +125,7 @@ config EFS_SPI_READ_MODE
default 4 # Dual IO (1-2-2) default 4 # Dual IO (1-2-2)
config EFS_SPI_SPEED config EFS_SPI_SPEED
default 4 if BOARD_GOOGLE_WINTERHOLD
default 0 # 66MHz default 0 # 66MHz
config EFS_SPI_MICRON_FLAG config EFS_SPI_MICRON_FLAG
@ -134,6 +135,7 @@ config NORMAL_READ_SPI_SPEED
default 1 # 33MHz default 1 # 33MHz
config ALT_SPI_SPEED config ALT_SPI_SPEED
default 4 if BOARD_GOOGLE_WINTERHOLD
default 0 # 66MHz default 0 # 66MHz
endif # !EM100 endif # !EM100