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Without it >> it won't work. > > Should ACPI potential limitations be making the DT description less > accurate? > > Would it not be better that the driver has an DT binding and an ACPI > binding? Where there are common properties, common functions can be > used to retrieve them. However, if ACPI lacks usable clocks, use the > of_ method to get the clock from DT, and skip it for ACPI. I found is_of_node()/is_acpi_node() to detect if this driver is probed on OF/ACPI system. If this is the right way to go then clocks can stay required on DT system and not required on ACPI. Thanks, Michal