From 0dbc9174caf130c59a0fdeaeb7ee40b788acd48b Mon Sep 17 00:00:00 2001 From: Frank Wu Date: Wed, 1 Feb 2023 11:22:15 +0800 Subject: 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 Reviewed-on: https://review.coreboot.org/c/coreboot/+/72694 Tested-by: build bot (Jenkins) Reviewed-by: Eric Lai Reviewed-by: Martin L Roth --- src/mainboard/google/skyrim/Kconfig | 1 + 1 file changed, 1 insertion(+) (limited to 'src/mainboard/google/skyrim') 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 -- cgit v1.2.3