PowerQUICC ProcessorsのトピックRe: FPGA access using P5040 processor via eLBC

FPGA access using P5040 processor via eLBC

hemwant — Wed, 30 Mar 2022 04:53:20 GMT

We are having a customised P5040 board with FPGA device[8bit access] configured at CS2 of eLBC . We are not able to access the registers of FPGA from uboot . On further debugging the issue with oscilloscope, the CS2 is not being asserted when we initiate read/write from uboot.

The dump of complete uboot, eLBC and LAW registers is attached with this post.

Re: FPGA access using P5040 processor via eLBC

yipingwang — Wed, 27 Apr 2022 01:45:45 GMT

Can you please share your schematic?

Re: FPGA access using P5040 processor via eLBC

hemwant — Wed, 27 Apr 2022 04:58:10 GMT

@yipingwangthis issue is resolved , FPGA was configured for little endian whereas processor is accessing in big endian mode.