On 19/08/2022 06:13, Peng Fan wrote: >>> >> Sorry, I did not explain clearly last time, I just mentioned that imx8ulp fec >> was totally reused from imx6ul and was a little different from imx6q. >> So what should I do next? Should I fix the binding doc ? > > Just my understanding, saying i.MX6Q supports feature A, > i.MX6UL support feature A + B, Then i.MX6UL is compatible with i.MX6Q. Or if i.MX8ULP can bind with any previous compatible and still work (with limited subset of features). > > If upper is true from hardware level, then i.MX8ULP FEC node > should contain 8ulp, 6ul, 6q. > > But the list may expand too long if more and more devices are supported > and hardware backward compatible True. I guess three items is the limit and anything newer should restart the sequence. Best regards, Krzysztof
