Hi all,
my SPI0 is configured and it works (the device which is connected to SPI0 functions properly)
Unfortunately, I do not understand how it is configured and I cannot ask the author.
Can you please give me a hint where I can find the configuration ?
root@beaglebone:~# uname -a
Linux beaglebone 3.8.13-bone70 #1 SMP Fri Jan 23 02:15:42 UTC 2015 armv7l GNU/Linux
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The overlay looks good:
root@beaglebone:~# cat /sys/devices/bone_capemgr.9/slots
0: 54:PF—
1: 55:PF—
2: 56:PF—
3: 57:PF—
4: ff:P-O-L Bone-LT-eMMC-2G,00A0,Texas Instrument,BB-BONE-EMMC-2G
5: ff:P-O-L Bone-Black-HDMI,00A0,Texas Instrument,BB-BONELT-HDMI
7: ff:P-O-L Override Board Name,00A0,Override Manuf,BB-SPIDEV0 -
dmesg does not not say why BB-SPIDEV0 is loaded:
[ 177.147378] bone-capemgr bone_capemgr.9: part_number ‘BB-SPIDEV0’, version ‘N/A’
[ 177.150423] bone-capemgr bone_capemgr.9: slot #7: generic override
[ 177.150483] bone-capemgr bone_capemgr.9: bone: Using override eeprom data at slot 7
[ 177.150533] bone-capemgr bone_capemgr.9: slot #7: ‘Override Board Name,00A0,Override Manuf,BB-SPIDEV0’
[ 177.150781] bone-capemgr bone_capemgr.9: slot #7: Requesting part number/version based 'BB-SPIDEV0-00A0.dtbo
[ 177.150828] bone-capemgr bone_capemgr.9: slot #7: Requesting firmware ‘BB-SPIDEV0-00A0.dtbo’ for board-name ‘Override Board Name’, version ‘00A0’
[ 177.150898] bone-capemgr bone_capemgr.9: slot #7: dtbo ‘BB-SPIDEV0-00A0.dtbo’ loaded; converting to live tree
[ 177.154033] bone-capemgr bone_capemgr.9: slot #7: #2 overlays
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/boot/uEnv.txt does NOT have any changes (everything is commented out)
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/etc/default/capemgr does not contain SPI:
Default settings for capemgr. This file is sourced by /bin/sh from
/etc/init.d/capemgr.sh
Options to pass to capemgr
CAPE=
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/etc/init.d/capemgr.sh does not have hard-coded BB-SPIDEV0
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I decompile am335x-boneblack.dtb but there is no BB-SPIDEV0:
dtc -O dts -o ~/am335x-boneblack.dts -I dtb /boot/dtbs/3.8.13-bone70/am335x-boneblack.dtb
root@beaglebone:~# grep part-number ~/am335x-boneblack.dts | sed ‘s/^\s+//’
part-number = “BB-BONE-GEIGER”;
part-number = “BB-BONE-NIXIE”;
part-number = “BB-BONE-TFT-01”;
part-number = “BB-BONE-RTC-01”;
part-number = “BB-BONE-HEXY-01”;
part-number = “BB-BONE-MRF24J40”;
part-number = “BB-BONE-RS232-01”;
part-number = “BB-BONE-GPS-01”;
part-number = “BB-BONE-EMMC-2G”;
part-number = “BB-BONELT-HDMI”;
part-number = “BB-BONELT-HDMIN”;
part-number = “BB-BONE-DVID-01”;
part-number = “BB-BONE-EMMC-2G”;
part-number = “BB-BONE-GEIGER”;
part-number = “BB-BONE-LCD3-01”;
part-number = “BB-BONE-WTHR-01”;
part-number = “BB-BONELT-HDMI”;
part-number = “BB-BONE-NIXIE”;
part-number = “BB-BONE-TFT-01”;
part-number = “BB-BONE-RTC-01”;
part-number = “BB-BONE-HEXY-01”;
part-number = “BB-BONE-MRF24J40”;
part-number = “BB-BONE-EXPTEST”;
part-number = “BB-BONE-RS232-01”;
part-number = “BB-BONE-GPS-01”;
part-number = “BB-BONELT-HDMIN”;
part-number = “2191”;
part-number = “BB-BONE-LOGIBONE”;
Why BB-SPIDEV0 is loaded ?
Cheers,
Andrey