Robert, I haven't used dtb-rebuilder, does one need to recompile the
Kernel to use it? Also, in the main dts, it appears only spi0 is
enabled, but I use spi1 due to pin conflicts on the BBB cape headers;
does dtb-rebuilder support spi1?
Currently I'm fighting with WiFi; I had scripts to detect the wlanx
device using iw dev | grep "Interface" | awk '{printf $2}' but this is
failing at boot; it works fine after boot. I tried hard coding the wlanx
device, but now it seems to change; when I specify wlan0, it comes up as
wlan1, and vice versa? It seems wireless networking changed somewhat
from my previous version, and I haven't tracked down what yet. So
wireless first, apt-gets second, pips third, device trees fourth, prus
fifth, and then tracking down why previously debugged software stopped
working. It might be interesting to keep track of how many issues come up.
Anyways, for now, I am going with /v4.1.x and will probably do Robert's
suggestions re /
On 2015-12-16 10:41 AM, Robert Nelson wrote:
On Wed, Dec 16, 2015 at 9:31 AM, William Hermans <[email protected]
<mailto:[email protected]>> wrote:
/SPI works great on v4.1.x now, just pay attention this this
little/
/spi-dma-disable hack:/
//
/https://github.com/beagleboard/bb.org-overlays/blob/master/src/arm/BB-SPIDEV0-00A0.dts#L54/
//
/"ti,pio-mode;"/
//
/Otherwise, the spidev interface will lock up on the 160'th
bit.../
//
/(3.8 never used dma on spi, so this isn't a regression in
speed..)/
Is it possible to control the SPI hardware through the PRU, and if
so, would that hack still matter Robert ? No idea if spidev is
used in such a case or not . . .
I didn't investage that side.. It's just when used as an overlay,
that's needed..
If you setup a *.dtb with spi enabled in the dtb-rebuilder you don't
need that workaround..
https://github.com/RobertCNelson/dtb-rebuilder/blob/4.1-ti/src/arm/am335x-boneblack-spi0.dts#L140
Regards,
--
Robert Nelson
https://rcn-ee.com/
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Kenneth Martin
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555 Richmond St. W, BX1200/Suite 905
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416 640-2626, www.granitesemi.com
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