On 22/09/2022 11:27, Jianguo Zhang wrote: > The clk_csr property is parsed in driver for generating MDC clock > with correct frequency. A warning('clk_csr' was unexpeted) is reported > when runing 'make_dtbs_check' because the clk_csr property > has been not documented in the binding file. > You did not describe the case, but apparently this came with 81311c03ab4d ("net: ethernet: stmmac: add management of clk_csr property") which never brought the bindings change. Therefore the property was never part of bindings documentation and bringing them via driver is not the correct process. It bypasses the review and such bypass cannot be an argument to bring the property to bindings. It's not how new properties can be added. Therefore I don't agree. Please make it a property matching bindings, so vendor prefix, no underscores in node names. Driver and DTS need updates. Best regards, Krzysztof