> > Should it (ACPI walk) be done in PCI case as well? If so, then it needs > > to be done up to i2c-core. There you may adjust the bus speed whenever > > slave device is enumerated. > > > I think the "ACPI walk for bus speed" also works for PCI case. It'll > be good to do this in i2c-core. > By doing this we can get a minimum device speed for this bus. I2C bus > drivers can use this speed to set corresponding mode into i2c > controller. > Waiting for comments from others. > > > For PCI case you have still to have hardcoded values and it should be > > maximum supported by the bus I think. When you have implemented above > > algorithm you may do this safely. Am I missing something? > Agree. It'll be safer to set a hardcoded maximum supported speed of > the bus for PCI case. > I2C bus driver can use MIN(speed_get_by_ACPI_walk, > hardcoded_max_supported_speed) for bus speed. Do I read this correctly that you agreed on an alternative path so this series can be discarded?
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