Hey,
I've been working on SPI for several days, which is an ethernet chip enc28j60.
Following is my connection,
| CS | MISO | MOSI | SCK | INT | |
|---|---|---|---|---|---|
| GPIO | 110 | 114 | 115 | 109 | 44 |
| PIN | J18-10 | J18-11 | J17-12 | J17-11 | J19-4 |
| ENC28J60 | 9 | 6 | 7 | 8 | 4 |
What I expected was,
"When I insmod enc28j60.ko, eth0 comes up."
However things were not that simple.
Is there anybody managed to connect enc28j60 - or other SPI devices with interrupt - on edison breakout board?
Currently I'm on,
1. I found "spi-config" lets me know that the enc28j60 is connected on "SPI bus 6". whatever it is.
2. I see driver module "enc28j60.ko loaded" from dmesg but no more.
3. "modprobe spi-config devices=bus=6:speed=12000000:cs=0:modalias=enc28j60:gpioirq=44" gives me
[54235.127227] BUG: sleeping function called from invalid context at /home/builder/edison-src/build/tmp/work/edison-poky-linux/linux-yocto/3.10.17+gitAUTOINC+6ad20f049a_c03195ed6e-r0/linux/mm/slub.c:926 [54235.127376] in_atomic(): 1, irqs_disabled(): 1, pid: 323, name: modprobe [54235.173888] intel_mid_ssp_spi_unified 0000:00:07.2: ERROR : DMA buffers already mapped
4. adding {"enc28j60", SFI_DEV_TYPE_SPI, 0, &enc28j60_platform_data, NULL }, etc. in upstream_to_edison.patch didn't show any differences.
any ideas?
I'll be keep debugging.