SPI chipselect error on beaglebone black

Embedded Linux Discussions
1

Hi,

I am trying to interface an audio device through SPI to BBB. I modified uEnv.txt and enabled uboot_overlay_addr4=/lib/firmware/BB-SPIDEV0-00A0.dtbo

At boot up I keep getting this error:

omap2_mcspi 48030000.spi: chipselect 0 already in use

Here is my output for sudo /opt/scripts/tools/version.sh

git:/opt/scripts/:[109f74fb87e6034ae1a8971a244064a8d5e090a5]                    
eeprom:[A335BNLT000C0815BBBK0732]                                               
model:[TI_AM335x_BeagleBone_Black]                                              
dogtag:[BeagleBoard.org Debian Image 2019-08-03]                                
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2019.04-00002-gbb4af0f
50f]:[location: dd MBR]                                                         
kernel:[4.14.108-ti-r113]                                                       
nodejs:[v6.17.0]                                                                
uboot_overlay_options:[enable_uboot_overlays=1]                                 
uboot_overlay_options:[uboot_overlay_addr4=/lib/firmware/BB-SPIDEV0-00A0.dtbo]                                                                              
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-14-TI-
00A0.dtbo]                                                                      
uboot_overlay_options:[enable_uboot_cape_universal=1]                           
pkg check: to individually upgrade run: [sudo apt install --only-upgrade <pkg>] 
pkg:[bb-cape-overlays]:[4.4.20190801.0-0rcnee0~stretch+20190801]                
pkg:[bb-wl18xx-firmware]:[1.20190227.1-0rcnee0~stretch+20190227]                
pkg:[kmod]:[23-2rcnee1~stretch+20171005]                                        
pkg:[librobotcontrol]:[1.0.4-git20190227.1-0rcnee0~stretch+20190327]            
pkg:[firmware-ti-connectivity]:[20180825+dfsg-1rcnee1~stretch+20181217]         
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev us
ers systemd-journal i2c bluetooth netdev gpio pwm eqep remoteproc admin spi tisd
k weston-launch xenomai cloud9ide]                                              
cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/m
mcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 rng_core.def
ault_quality=100]                                                               
dmesg | grep remote                                                             
[    2.732056] remoteproc remoteproc0: wkup_m3 is available                     
[    3.158246] remoteproc remoteproc0: powering up wkup_m3                      
[    3.167610] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, 
size 217168                                                                     
[    3.187796] remoteproc remoteproc0: remote processor wkup_m3 is now up       
[   12.111919] remoteproc remoteproc1: 4a334000.pru is available                
[   12.243680] remoteproc remoteproc2: 4a338000.pru is available                
dmesg | grep pru                                                                
[   12.047905] pruss 4a300000.pruss: creating PRU cores and other child platform
 devices                                                                        
[   12.111919] remoteproc remoteproc1: 4a334000.pru is available                
[   12.154872] pru-rproc 4a334000.pru: PRU rproc node /ocp/pruss_soc_bus@4a32600
4/pruss@0/pru@34000 probed successfully                                         
[   12.243680] remoteproc remoteproc2: 4a338000.pru is available                
[   12.289873] pru-rproc 4a338000.pru: PRU rproc node /ocp/pruss_soc_bus@4a32600
4/pruss@0/pru@38000 probed successfully                                         
dmesg | grep pinctrl-single                                                     
[    0.944940] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568 
dmesg | grep gpio-of-helper                                                     
[    0.957239] gpio-of-helper ocp:cape-universal: ready                         
lsusb                                                                           
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub                  
END

I would really appreciate your suggestions.

Thank you

2

Very strange, did you make any changes to BB-SPIDEV0?

PS, can you please run, version.sh again with updates?

cd /opt/scripts/tools/
git pull
sudo ./version.sh

as it’ll show more info…

debian@test-bbb-2:~$ dmesg | grep spi
debian@test-bbb-2:~$ sudo /opt/scripts/tools/version.sh 
git:/opt/scripts/:[90c549502ab96c2ca51aa7adfdd3a5ca384038ee]
eeprom:[A335BNLT0A5B2313BBBK3287]
model:[TI_AM335x_BeagleBone_Black]
dogtag:[BeagleBoard.org Debian Image 2018-06-24]
bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 2019.04-00002-g3d8c979660]:[location: dd MBR]
UBOOT: Booted Device-Tree:[am335x-boneblack-uboot-univ.dts]
UBOOT: Loaded Overlay:[AM335X-PRU-RPROC-4-14-TI-00A0]
UBOOT: Loaded Overlay:[BB-ADC-00A0]
UBOOT: Loaded Overlay:[BB-BONE-eMMC1-01-00A0]
UBOOT: Loaded Overlay:[BB-HDMI-TDA998x-00A0]
UBOOT: Loaded Overlay:[BB-SPIDEV0-00A0]
kernel:[4.14.108-ti-r123]
nodejs:[v6.17.0]
/boot/uEnv.txt Settings:
uboot_overlay_options:[enable_uboot_overlays=1]
uboot_overlay_options:[enable_uboot_cape_universal=1]
uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-RPROC-4-14-TI-00A0.dtbo]
uboot_overlay_options:[uboot_overlay_addr4=/lib/firmware/BB-SPIDEV0-00A0.dtbo]
pkg check: to individually upgrade run: [sudo apt install --only-upgrade <pkg>]
pkg:[bb-cape-overlays]:[4.4.20191017.0-0rcnee0~stretch+20191017]
pkg:[bb-wl18xx-firmware]:[1.20190227.1-0rcnee0~stretch+20190227]
pkg:[kmod]:[23-2rcnee1~stretch+20171005]
pkg:[roboticscape]:[0.4.4-git20180608.0-0rcnee0~stretch+20180609]:[GOT_REPLACED_BY_NEXT]
pkg:[librobotcontrol]:[1.0.4-git20190227.1-0rcnee0~stretch+20190327]
pkg:[firmware-ti-connectivity]:[20180825+dfsg-1rcnee1~stretch+20181217]
groups:[debian : debian adm kmem dialout cdrom floppy audio dip video plugdev users systemd-journal i2c bluetooth netdev cloud9ide gpio pwm eqep admin spi tisdk weston-launch xenomai]
cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 rng_core.default_quality=100]
dmesg | grep remote
[    2.697863] remoteproc remoteproc0: wkup_m3 is available
[    3.127399] remoteproc remoteproc0: powering up wkup_m3
[    3.136774] remoteproc remoteproc0: Booting fw image am335x-pm-firmware.elf, size 217168
[    3.156904] remoteproc remoteproc0: remote processor wkup_m3 is now up
[   26.364676] remoteproc remoteproc1: 4a334000.pru is available
[   26.421850] remoteproc remoteproc2: 4a338000.pru is available
dmesg | grep pru
[   26.323589] pruss 4a300000.pruss: creating PRU cores and other child platform devices
[   26.364676] remoteproc remoteproc1: 4a334000.pru is available
[   26.382649] pru-rproc 4a334000.pru: PRU rproc node /ocp/pruss_soc_bus@4a326004/pruss@0/pru@34000 probed successfully
[   26.421850] remoteproc remoteproc2: 4a338000.pru is available
[   26.437858] pru-rproc 4a338000.pru: PRU rproc node /ocp/pruss_soc_bus@4a326004/pruss@0/pru@38000 probed successfully
dmesg | grep pinctrl-single
[    0.914618] pinctrl-single 44e10800.pinmux: 142 pins at pa f9e10800 size 568
dmesg | grep gpio-of-helper
[    0.926785] gpio-of-helper ocp:cape-universal: ready
lsusb
Bus 001 Device 002: ID 067b:2303 Prolific Technology, Inc. PL2303 Serial Port
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
END
debian@test-bbb-2:~$

Regards,