Background Info:
1) We are using BeagleBone Black to power our robot, using it since
November.
2) We use ADC, I2C1, I2C2, SPI0, 5 PWMs, and almost every available GPIO.
We have all these working using overlays, or config-pin, whichever is
needed. All is good.
3) Up until now I have not had to alter the default kernel or uEnv.txt.*
4) Upgraded to 4.4.9 a month or two ago. I am up-to-date with all
"apt-get update" and "apt-get upgrade".
5) /boot/uEnv.txt is attached.
6) root@beaglebone:/home/debian# uname -a
Linux beaglebone 4.4.9-ti-r25 #1 SMP Thu May 5 23:08:13 UTC 2016
armv7l GNU/Linux
The problem: Now we need SPI1 (yes, we need two SPI busses). I want to
use all the IOs listed above (see #2).
I think the best way is to use the default universal cape that comes with
4.4.9 (see above where I use it for all my IOs with little effort), but
enable SPI1 instead of MCASP.
What I've tried:
* I've seen that folks say that the only way to add SPIDEV1 overlay is via
/etc/rc.local (echo 'BB-SPIDEV1' >
/sys/devices/platform/bone_capemgr/slots). However, that then wipes out
the availability of I2C, PWMs, etc.
* I've also tried adding BB-SPIDEV1 via uEnv.txt but that didn't work at
all.
I've spent a few days trying various combination and can't find it.
Looked at source code too to try and see what is up, but didn't figure it
out yet.
I guess my idea of the "best way" is heading down the wrong path.
Questions:
* Do I have to make a whole new universal custom cape?
* Follow on question: Anybody have a way to turn on everything I use (see
#2 above) and SPIDEV1 too?
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