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

[Patrick Georgi (Code Review)]

Patrick Georgi has submitted this change. ( 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
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44464
Tested-by: build bot (Jenkins) 
Reviewed-by: Matt Papageorge 
Reviewed-by: Aaron Durbin 
---
M src/mainboard/google/zork/Kconfig
1 file changed, 4 insertions(+), 4 deletions(-)

Approvals:
  build bot (Jenkins): Verified
  Aaron Durbin: Looks good to me, approved
  Matt Papageorge: Looks good to me, but someone else must approve

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