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Therefore, I would say no. > > This is irrelevant, if this is a clock mux, it must be in the CCF, just > as when the RTC has a clock output. > > I understand your point, but taking into account the fact that FIRC clock should be used in most scenarios, would it be acceptable to not export this 'clksel' property in the devicetree bindings and simply use the FIRC clock by default in the RTC driver ? At least for this patchset, in order to ease the review process. If configurable clock source support would want to be enabled and exported via bindings for this S32G2/S32G3 RTC driver, then CCF registration for this clk mux could be added in future patches.