On Sat, Oct 31, 2020 at 01:40:57PM +0000, Jonathan Cameron wrote: > + spi-cpha: true > + spi-cpol: > + description: > + Should be either spi-cpha, or spi-cpol but not both. Do the YAML files follow RFC 2119 terminology? If so, this is a "must", not a "should". (As it was in the txt file.) > +required: > + - compatible > + - reg > + - vref-supply This is missing "spi-cpha xor spi-cpol", not sure if it can be specified here using the xor YAML trick. Thanks, Lukas