Hello, We are having a problem trying to use gpio 49-63 on our amcc canyonlands board. I'm aware these pins are shared with the trace port, so wrote 0x7ff to SDR0_PFC0 register to make sure they were all in gpio mode.
I set the gpio to output and then try to drive a 1 out but I can never see it. I doubled checked the pin with the value reported by the SW and it never toggles. If I set the value to 1, I can see a 1 in the gpio OR register, but the IR stays 0(IR is what is read by get_value) I can change the direction and value the first 16 gpios in gpio controller 1 but not the upper 16 bits. So this means that gpio 48 doesn't work either; thus 16 of the gpio don't work(for out, I haven't tried in) I am running 2.6.30. Has anybody seen this? Am I missing a register somewhere? thanks, jeff _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
