[Skiboot] [PATCH] p8-i2c: occ: Add support for OCC to use I2C engines

Stewart Smith stewart at linux.vnet.ibm.com
Fri Jun 9 18:00:40 AEST 2017

Joel Stanley <joel at jms.id.au> writes:
>> + * On POWER9, the I2C may also wish to use some of the i2cm engines,
>> + * to do things like read sensor data. There's a couple of shared
>> + * registers with the OCC to negotiate locking of the i2cm engines.
>> + * See occ/src/occ_405/lock/lock.c
> Out of interest, is this the same i2cm engines that are accessed by
> the BMC over FSI?
> If so, how does skiboot and/or the OCC mediate access with the BMC?

Absolutely no idea.

We should probably work out exactly what that is though.

Stewart Smith
OPAL Architect, IBM.

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