summaryrefslogtreecommitdiff
path: root/src/soc/sifive
diff options
context:
space:
mode:
authorKane Chen <kane.chen@intel.com>2020-04-13 20:48:54 +0800
committerTim Wawrzynczak <twawrzynczak@chromium.org>2020-04-28 15:43:36 +0000
commitd2b2be39296d910178173273017800a1b054a1ba (patch)
tree093bc25858c3ae8eb5bfb9ab06e361c0eae5d097 /src/soc/sifive
parent007faee9486bcc24e1bc7011717ae88d7eb5e62b (diff)
soc/intel/cannonlake: Report driver strength by _DSM in eMMC ACPI device
According to doc 621880, it suggests setting 40 ohm in byte 185 in extCSD. This commit provides _DSM method for driver to query driving strength. TEST=mmc extcsd read |grep HS_TIMING and found bit[7:4] is set to 4 BUG=b:154159888 Signed-off-by: Kane Chen <kane.chen@intel.com> Change-Id: I1b4df8b0d1d2cad3a7f521ad47ee5a4b3320c767 Reviewed-on: https://review.coreboot.org/c/coreboot/+/40467 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Tim Wawrzynczak <twawrzynczak@chromium.org>
Diffstat (limited to 'src/soc/sifive')
0 files changed, 0 insertions, 0 deletions