Well, what I did so far was setup mem_stcfg1/mem_staddr1. What I'm having trouble with is, what values do I need to Set in mem_staddr1, and then, how do I access That memory (mmap? Driver?). Thanks. Gilad. -----הודעה מקורית----- מאת: linux-mips-bounce@xxxxxxxxxxxxxx [mailto:linux-mips-bounce@xxxxxxxxxxxxxx] בשם Pete Popov נשלח: Wednesday, November 24, 2004 7:58 PM אל: Gilad Rom עותק: linux-mips@xxxxxxxxxxxxxx נושא: Re: Au1500 Chip Select Gilad Rom wrote: > Hello, > > I am trying to implement a simple program which Will be used to > communicate with an I/O peripheral Over CS1 (Chip select 1) of the > au1500. I'm not sure I understand what you're trying to do. The chip select is setup by the boot loader or kernel, and you don't touch it anymore. The CS will get asserted/deasserted based on the addresses you're trying to access. > Has anyone ever attempted this? Could someone Point me to some sample > code, perhaps? I am grepping Through the kernel, yet having trouble > locating Chip-select specific code for reference. Again, what sort of an example are you looking for? Setting up a chip select on the Au1x is nothing more than writing the appropriate values to the 3 chip select registers. Then you're done. Pete
