Re: [U-Boot] Flag -mno-cache-volatile to bypass the cache

Please continue to use the I/O accessor functions. Your specific compiler version may understand such an option, but don't expect that any other compiler or architecture provides the same - so better stay portable and use what was designed exactly for this purpose.

Yes, please do use the accessor functions. This particular compiler flag is the result of someone's brain fart -- and does little more than confuse the meaning of the volatile keyword (which has absolutely _nothing_ to do with cache access) ... while promoting poorly considered code.

--Scott