Hi Geert and Mark, Thank you for your comments. I will try to address them in the next replies. On 06.07.2020 18:22, Mark Brown wrote: > On Mon, Jul 06, 2020 at 05:32:51PM +0200, Geert Uytterhoeven wrote: > >> However, that information would need to be added to each driver only once. >> With your proposal, it has to be added to all affected nodes of all DTSes >> of all users. > Right, these are fixed properties of the silicon which we know simply > from knowing which device we have - there is no need to put them in DT > at all. I see. I agree with you. My concern was just the lack of compatibility with the existing drivers. I will try to add daisy_chain information to spi_driver struct in version v3 of the patch.