Unfortunately, FITs does not have any settings for SMBus enable/disable and so on. In general, this program for Edisonville_Rangeley is very poor settings.
Thanks for youre advice Kyösti! I add files with logs. I tried to play with the enable_smbus() function but without result. Rather, the result is the same - no devices on i2c-1. You can see the comparison of devices on (SMBus0) i2c-1 bus with the OEM Bios and with Coreboot bios in i2cdetect.log. Could nuvoton superio somehow affect the SMBus? I also noticed errors in dmesg output such: [ 93.737732] i801_smbus 0000:00:1f.3: Timeout waiting for interrupt! [ 93.744750] i801_smbus 0000:00:1f.3: Transaction timeout Best Regards, Dmitry Ponamorev пт, 31 мая 2019 г. в 07:50, Kyösti Mälkki <[email protected]>: > On Wed, May 29, 2019 at 5:48 PM <[email protected]> wrote: > > > > There is motherboard based on the Intel Rangeley Atom C2000 (C2758) > series processor. How to enable the SMBus0 in coreboot? If I use OEM BIOS > or BIOS from Intel (EDVLCRB1.86B.0048.R00.1508181657_MPK) for mohon peak > crb, then I see on the SMBus0 (i2c-1 in Fedora 28) memory DIMM spd (0x50 & > 0x52), clock generator (0x69) and other devices. If I use a coreboot based > bios for the Mohon peak platform - I do not see any devices on i2c-1. I see > an data exchange on the SMBus0 with oscilloscope at boot time only. When I > send "i2cdetect -y 1" command in Linux no activity on SMBus0 and no device > found. > > Your chances of getting support are much better when you provide more > context and logfiles. We would probably need relevant lines from > system logs (dmesg) and outputs from 'i2cdetect' and 'lspci -xx' here, > both OEM BIOS and coreboot. For coreboot, also 'cbmem -1'. Would not > hurt if you pushed your mainboard port as a draft to gerrit or make > your work otherwise accesible. > > What we have in rangeley_smbus_read_resources() does not look that > good, it may leave SMBUS IO BAR unset in the hardware. Might be simply > case of calling enable_smbus() in romstage for the board to get that > fixed. > > Regards, > Kyösti Mälkki >
cbmem.log.tar.gz
Description: GNU Zip compressed data
i2cdetect.log.tar.gz
Description: GNU Zip compressed data
dmesg.log.tar.gz
Description: GNU Zip compressed data
lspci_xx.log.tar.gz
Description: GNU Zip compressed data
lspci_vvv.log.tar.gz
Description: GNU Zip compressed data
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