Hi Biju, On 28-07-21, 07:00, Biju Das wrote: > > > > Sorry I dont like passing numbers like this :( > > > > Can you explain what is meant by each of the above values and looks like > > some (if not all) can be derived (slave config as well as transaction > > properties) > > > 0x11228 (Tx) > 0x11220 (Rx) > > BIT 22:- TM :- Transfer Mode What are the values, here it seems 0 > Bits 16->19 :- DDS(Destination Data Size) --> 0x0001 (16 bits) > Bits 12->15 :- SDS(Source Data size)--> 0x0001 (16 bits) use src_addr_width/dst_addr_width ..? > Bit 11 :- Reserved > Bits 8->10 :- Ack mode --> 0x010 (Bus cycle mode) What does this mean? > Bit 7 :- Reserved > Bit 6:- LVL --> Level -->0 (DMA request based on edge of thesignal) > Bit 5:- HIEN --> High Enable --> 1 (Detects a DMA request on rising edge of the signal) > Bit 4:- LOEN --> Low Enable -->0 (Does not DMA request on falling edge of the signal) > Bit 3:- REQD --> Request Direction ->1 (DMAREQ is Destination) how and what decides these values It is now hardcoded in the client driver, can we do that in dma driver instead? While deriving most of the values? -- ~Vinod
