On 6/6/19 9:40 AM, masonccyang@xxxxxxxxxxx wrote: [...] > RPC-IF works either in SPI or HyperFlash is decided by external hardware > pins > configuration and it can NOT switch it's operation mode in the run time. > This is not like my understanding of MFD. Which external hardware pins decide the RPC configuration ? It seems to me like PHYCNT register, PHYMEM bitfield, selects what device is connected, and then a couple of other bits control the communication, but I see nothing which would be tied to any external configuration pins. [...] -- Best regards, Marek Vasut