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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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