On 04/07/2017 17:58, Bjorn Helgaas wrote: > It's definitely a hassle to support chips with different register > layouts. Your hardware guys are really making your life hard :) Now where did I put my foam bat... > If the chips are fundamentally different, i.e., if they *operate* > differently in addition to having a different register layout, you > could make two separate drivers. It's the exact same underlying IP. Revision 2 is only a bug fix rev. IIUC, some of the fixes lead to adding a register here, removing a register there... and I don't think the HW dev ever considered the pain of supporting both revs within a single driver. This dual support explains some of the peculiarities you noted in my submission. Regards.
