From 6646cb09729bfe560e8b1383b7255c2e2a8f3d86 Mon Sep 17 00:00:00 2001 From: Felix Held Date: Tue, 25 Aug 2020 17:27:41 +0200 Subject: mb/amd/mandolin: change EFS SPI mode from 1-4-4 to 1-1-4 With this change the flash addresses will only get transferred over one data pin like in the non-quad SPI mode and only the data will get sent over all four data pins. Since this gives the flash chip a bit more time to fetch the data the host requested, this allows higher SPI frequencies resulting in a higher throughput when bigger chunks of memory get read. BRANCH=zork Change-Id: Iad4c922ffcdba4b17e6e81244ff37302eb171d97 Signed-off-by: Felix Held Reviewed-on: https://review.coreboot.org/c/coreboot/+/45831 Reviewed-by: Marshall Dawson Tested-by: build bot (Jenkins) --- src/mainboard/amd/mandolin/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'src/mainboard/amd') diff --git a/src/mainboard/amd/mandolin/Kconfig b/src/mainboard/amd/mandolin/Kconfig index 1d2fa5e26f..63b6306df8 100644 --- a/src/mainboard/amd/mandolin/Kconfig +++ b/src/mainboard/amd/mandolin/Kconfig @@ -110,7 +110,7 @@ config VGA_BIOS_DGPU_FILE config EFS_SPI_READ_MODE int default 0 if EM100 - default 5 + default 3 config EFS_SPI_SPEED int -- cgit v1.2.3