Attention is currently required from: Furquan Shaikh, Werner Zeh. Hello build bot (Jenkins), Furquan Shaikh, Mario Scheithauer, Kyösti Mälkki,
I'd like you to reexamine a change. Please visit
https://review.coreboot.org/c/coreboot/+/52721
to look at the new patch set (#3).
Change subject: mb/siemens/mc_apl{1,2,3,5,6}: Tune I2C frequency ......................................................................
mb/siemens/mc_apl{1,2,3,5,6}: Tune I2C frequency
All the boards in the patch have a constraint for the I2C bus to operate on 100 kHz. Provide dedicated values for rise time, fall time and data hold time on mainboard level to get a proper timing which takes the bus load into account. Giving these values the driver computes the needed timings correctly.
TEST=Measure I2C frequency on all boards while coreboot accesses external RTC and make sure it is 100 kHz.
Change-Id: Iab634190bda5fa2a4fdf2ebaa1e45ac897d84deb Signed-off-by: Werner Zeh werner.zeh@siemens.com --- M src/mainboard/siemens/mc_apl1/variants/mc_apl1/devicetree.cb M src/mainboard/siemens/mc_apl1/variants/mc_apl2/devicetree.cb M src/mainboard/siemens/mc_apl1/variants/mc_apl3/devicetree.cb M src/mainboard/siemens/mc_apl1/variants/mc_apl5/devicetree.cb M src/mainboard/siemens/mc_apl1/variants/mc_apl6/devicetree.cb 5 files changed, 44 insertions(+), 1 deletion(-)
git pull ssh://review.coreboot.org:29418/coreboot refs/changes/21/52721/3