From c29340df3ca3669801cbdf8a04ab311fcd714f4a Mon Sep 17 00:00:00 2001
From: Martin Roth <gaumless@gmail.com>
Date: Fri, 13 Jan 2023 22:05:59 -0700
Subject: [PATCH] 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>
---
 src/mainboard/google/skyrim/Kconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/mainboard/google/skyrim/Kconfig b/src/mainboard/google/skyrim/Kconfig
index d89d29024f..bbcb54b1df 100644
--- a/src/mainboard/google/skyrim/Kconfig
+++ b/src/mainboard/google/skyrim/Kconfig
@@ -125,6 +125,7 @@ config EFS_SPI_READ_MODE
 	default 4                                 # Dual IO (1-2-2)
 
 config EFS_SPI_SPEED
+	default 4 if BOARD_GOOGLE_WINTERHOLD
 	default 0	# 66MHz
 
 config EFS_SPI_MICRON_FLAG
@@ -134,6 +135,7 @@ config NORMAL_READ_SPI_SPEED
 	default 1	# 33MHz
 
 config ALT_SPI_SPEED
+	default 4 if BOARD_GOOGLE_WINTERHOLD
 	default 0	# 66MHz
 
 endif # !EM100