On Thu, May 28, 2020 at 01:45:58PM +0200, Marco Felsch wrote: > On 20-05-28 13:27, Andy Shevchenko wrote: > > On Thu, May 28, 2020 at 05:01:47PM +0800, Fengping Yu wrote: ... > > > + select CONFIG_REGMAP_MMIO > > > > This is wrong. > > Why is this wrong? The driver uses the rmap-mmio functions. In Kconfig CONFIG_ prefix is implied. There is no CONFIG_CONFIG_REGMAP_MMIO. > Thanks for the explanation =) Sorry, I think it's obvious... > > > + select INPUT_MATRIXKMAP -- With Best Regards, Andy Shevchenko