diff options
| author | Frank Wu <frank_wu@compal.corp-partner.google.com> | 2023-02-01 11:22:15 +0800 |
|---|---|---|
| committer | Martin L Roth <gaumless@gmail.com> | 2023-02-05 01:00:31 +0000 |
| commit | 0dbc9174caf130c59a0fdeaeb7ee40b788acd48b (patch) | |
| tree | 138c2d99039a02a8cffe61ced81f2f15db2f27a9 /src | |
| parent | ced8fe0cb698a95b5f5aa35e2393fd5961a3d1f0 (diff) | |
mb/google/skyrim/var/frostflow: Override SPI flash bus speed
Add configuration to bump up the SPI flash bus speed from 66 MHz to 100
MHz starting the board version of the current phase.
BUG=b:260127676
TEST=Build and boot to OS in Frostflow with 100 MHz SPI bus speed.
Observe that the boot time improved by 100 ms compared to 66 MHz SPI
flash bus speed.
firmware log:
SPI fast read speed: 100 MHz
At 66 MHz:
Total Time: 1,563,384
At 100 MHz:
Total Time: 1,462,570
Change-Id: I9435f4ad0d3541b040703dc9a453badbd080dc09
Signed-off-by: Frank Wu <frank_wu@compal.corp-partner.google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/72694
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Eric Lai <eric_lai@quanta.corp-partner.google.com>
Reviewed-by: Martin L Roth <gaumless@gmail.com>
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/google/skyrim/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/src/mainboard/google/skyrim/Kconfig b/src/mainboard/google/skyrim/Kconfig index d9454749d9..55b6ecea99 100644 --- a/src/mainboard/google/skyrim/Kconfig +++ b/src/mainboard/google/skyrim/Kconfig @@ -157,6 +157,7 @@ config OVERRIDE_EFS_SPI_SPEED config OVERRIDE_EFS_SPI_SPEED_MIN_BOARD hex default 0x5 if BOARD_GOOGLE_SKYRIM + default 0x1 if BOARD_GOOGLE_FROSTFLOW default 0xffffffff help Minimum board version starting which the Override EFS SPI Speed |