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This reverts commit 363202b43589ec240c4a0c8f5b449fbd5c1333f8.
Reason for revert: Seeing some bit flips on the SPI bus, but cannot
repro reliably on local builds. Going to downgrade back to 50 MHz
to see if builder builds are more stable on each variant as a result.
Signed-off-by: Shelley Chen <shchen@google.com>
Change-Id: I4fe76bac915e3b3c794821cd160a66824e38ea83
Reviewed-on: https://review.coreboot.org/c/coreboot/+/73214
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Change-Id: Ic6c711fe3fad19c24ca4c01f8d0a4bc002f14bd6
Signed-off-by: Elyes Haouas <ehaouas@noos.fr>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/69807
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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Increase frequency of sc7280 to 75 MHz. Setting the delay to 1/8 of
a cycle as a result of experimentation.
BUG=b:190231148
BRANCH=None
TEST=Make sure that herobrine board boots
HW Engineer measured SPI frequency and verified running at 75 MHz
Signed-off-by: Shelley Chen <shchen@google.com>
Change-Id: I3cf5a7c85f12800a11ece397a354349f2a0a235f
Reviewed-on: https://review.coreboot.org/c/coreboot/+/64673
Reviewed-by: Julius Werner <jwerner@chromium.org>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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EE requested that we increase the drive strength for the SPI lines to
8mA.
BUG=b:198627043
BRANCH=None
TEST=EE help verify
Change-Id: Ic887a7eef74f1063f7284db042c5fbd2e1d5bd4c
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63192
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Julius Werner <jwerner@chromium.org>
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copy existing QSPI driver from /soc/qualcomm/sc7180 to common folder.
This common QSPI driver works in master mode and provides read/write
operation for the slave devices like flash.
BUG=b:182963902
TEST=Validated on qualcomm sc7180 and sc7280 development board
Signed-off-by: Rajesh Patil <rajpat@codeaurora.org>
Change-Id: I5b3816b823e14db1dd13f1eb4a6761c7a61604b9
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55323
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>
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