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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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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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Based on the datasheet, we can safely increase the SPI frequency of
sc7280 to 50 MHz.
BUG=b:190231148
BRANCH=None
TEST=build and boot BIOS with this config on herobrine boards
Change-Id: I84420d7d8ab0cb979fc606fcf05147197bc51c35
Signed-off-by: Shelley Chen <shchen@google.com>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/63948
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
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Enable common qup driver in sc7280
BUG=b:182963902
TEST=Validated on qualcomm sc7280 development board
Signed-off-by: Rajesh Patil <rajpat@codeaurora.org>
Change-Id: I0e9049557ff63898037210e72333e1739ab62413
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55960
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>
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Refactor Qcom QSPI driver to separate common
and SoC specific driver code.
BUG=b:182963902
TEST=Validated on qualcomm sc7280 development board
Signed-off-by: Rajesh Patil <rajpat@codeaurora.org>
Change-Id: Ibe1dc3fe8bd71957ff8604ef4c9d97963100ccfb
Reviewed-on: https://review.coreboot.org/c/coreboot/+/55322
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>
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BUG=b:182963902
TEST=Validated on qualcomm sc7280 developement board
Change-Id: I1fc841b3113f2bf79b8376cd1ccdb671c53c2084
Signed-off-by: T Michael Turney <mturney@codeaurora.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/45205
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Shelley Chen <shchen@google.com>
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