[coreboot-gerrit] Change in coreboot[master]: mb/google/zork: Switch to normal read mode for EM100

[Furquan Shaikh (Code Review)]

Furquan Shaikh has uploaded this change for review. ( https://review.coreboot.org/c/coreboot/+/44464 )

Change subject: mb/google/zork: Switch to normal read mode for EM100
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mb/google/zork: Switch to normal read mode for EM100

This change sets the EFS config for SPI read mode to normal read mode
when using em100. With this, the boot is stable again without any
random hangs in PSP.

BUG=b:164429022

Signed-off-by: Furquan Shaikh 
Change-Id: I4cd3673dcc44a61905719a57f734df2fb9f4e6e2
---
M src/mainboard/google/zork/Kconfig
1 file changed, 4 insertions(+), 4 deletions(-)

git pull ssh://review.coreboot.org:29418/coreboot refs/changes/64/44464/1

diff --git a/src/mainboard/google/zork/Kconfig b/src/mainboard/google/zork/Kconfig
index c4a8f33..24c49c1 100644
--- a/src/mainboard/google/zork/Kconfig
+++ b/src/mainboard/google/zork/Kconfig
@@ -244,13 +244,13 @@

config EFS_SPI_READ_MODE
    int
-	default 4 if EM100
-	default 2
+	default 0 if EM100 # Normal read mode
+	default 2          # Dual IO (1-1-2)

config EFS_SPI_SPEED
    int
-	default 3 if EM100
-	default 0
+	default 3 if EM100 # 16.66 MHz
+	default 0          # 66.66 MHz

config EFS_SPI_MICRON_FLAG
    int