I switched to that kernel after the fact using:
sudo /opt/scripts/tools/update_kernel.sh --bone-rt-kernel --lts-4_19

Would it matter if I built the image originally with that kernel?

On Wednesday, March 17, 2021 at 11:40:24 AM UTC-6 John Allwine wrote:

> The kernel doesn't seem to be the problem. Even when I change to that 
> version my /dev/uio* devices aren't showing up. Am I missing a simple step 
> somewhere?
>
> $ sudo /opt/scripts/tools/version.sh 
> git:/opt/scripts/:[481db95174653ba485cca3797d4bbbe03c0cded0]
> eeprom:[A335BNLT000C1626BBBG0552]
> model:[TI_AM335x_BeagleBone_Black]
> dogtag:[Pocket NC Debian Buster Image 2021-02-01]
> bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot SPL 
> 2019.04-00002-gc9b3922522 (Aug 24 2020 - 16:42:18 -0500)]:[location: dd MBR]
> bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 
> 2019.04-00002-gc9b3922522]:[location: dd MBR]
> bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot SPL 
> 2019.04-00002-gbb4af0f50f (Jul 08 2019 - 11:44:39 -0500)]:[location: dd MBR]
> bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 
> 2019.04-00002-gbb4af0f50f]:[location: dd MBR]
> UBOOT: Booted Device-Tree:[am335x-boneblack-uboot-univ.dts]
> UBOOT: Loaded Overlay:[BB-ADC-00A0]
> UBOOT: Loaded Overlay:[BB-BONE-eMMC1-01-00A0]
> UBOOT: Loaded Overlay:[BB-HDMI-TDA998x-00A0]
> kernel:[4.19.180-bone-rt-r61]
> /boot/uEnv.txt Settings:
> uboot_overlay_options:[enable_uboot_overlays=1]
> uboot_overlay_options:[uboot_overlay_pru=AM335X-PRU-UIO-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]:[4.14.20210225.0-0~buster+20210225]
> pkg:[bb-customizations]:[1.20201105.0-0~buster+20201110]
> pkg:[bb-usb-gadgets]:[1.20200504.0-0~buster+20200504]
> pkg:[bb-wl18xx-firmware]:[1.20200813.1-0~buster+20200813]
> pkg:[kmod]:[26-1]
> WARNING:pkg:[librobotcontrol]:[NOT_INSTALLED]
> cmdline:[console=ttyO0,115200n8 bone_capemgr.uboot_capemgr_enabled=1 
> root=/dev/mmcblk0p1 ro rootfstype=ext4 rootwait coherent_pool=1M 
> net.ifnames=0 lpj=1990656 rng_core.default_quality=100 quiet]
> dmesg | grep remote
> [    1.160381] remoteproc remoteproc0: wkup_m3 is available
> [    1.423096] remoteproc remoteproc0: powering up wkup_m3
> [    1.423115] remoteproc remoteproc0: Booting fw image 
> am335x-pm-firmware.elf, size 217168
> [    1.425226] remoteproc remoteproc0: remote processor wkup_m3 is now up
> dmesg | grep pru
> dmesg | grep pinctrl-single
> [    0.785028] pinctrl-single 44e10800.pinmux: 142 pins, size 568
> dmesg | grep gpio-of-helper
> [    0.796784] gpio-of-helper ocp:cape-universal: ready
> END
>
> $ lsmod
> Module                  Size  Used by
> uio_pruss              16384  0
> evdev                  20480  1
> 8021q                  24576  0
> garp                   16384  1 8021q
> stp                    16384  1 garp
> mrp                    16384  1 8021q
> llc                    16384  2 garp,stp
> usb_f_acm              16384  2
> u_serial               20480  3 usb_f_acm
> usb_f_ncm              20480  2
> usb_f_rndis            20480  4
> u_ether                20480  2 usb_f_ncm,usb_f_rndis
> libcomposite           40960  16 usb_f_acm,usb_f_ncm,usb_f_rndis
> uio_pdrv_genirq        16384  0
> uio                    16384  2 uio_pruss,uio_pdrv_genirq
> iptable_nat            16384  0
> nf_nat_ipv4            16384  1 iptable_nat
> nf_nat                 40960  1 nf_nat_ipv4
> nf_conntrack          118784  2 nf_nat_ipv4,nf_nat
> nf_defrag_ipv6         16384  1 nf_conntrack
> nf_defrag_ipv4         16384  1 nf_conntrack
> iptable_mangle         16384  0
> iptable_filter         16384  0
> ip_tables              20480  3 iptable_mangle,iptable_filter,iptable_nat
> x_tables               20480  3 iptable_mangle,ip_tables,iptable_filter
> spidev                 16384  0
>
> $ ls /dev/uio* -la
> ls: cannot access '/dev/uio*': No such file or directory
>
> On Wednesday, March 17, 2021 at 11:24:53 AM UTC-6 RobertCNelson wrote:
>
>> On Wed, Mar 17, 2021 at 12:17 PM John Allwine <[email protected]> 
>> wrote: 
>> > 
>> > I tried a different kernel, one that I know works with uio_pruss 
>> because I'm using it on a different image (4.19.59-bone-rt-r36). In my 
>> custom image, though, the /dev/uio* devices aren't showing up. Here's 
>> version.sh output on it: 
>> > 
>> > git:/opt/scripts/:[481db95174653ba485cca3797d4bbbe03c0cded0] 
>> > eeprom:[A335BNLT000C1626BBBG0552] 
>> > model:[TI_AM335x_BeagleBone_Black] 
>> > dogtag:[Pocket NC Debian Buster Image 2021-02-01] 
>> > bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot SPL 
>> 2019.04-00002-gc9b3922522 (Aug 24 2020 - 16:42:18 -0500)]:[location: dd 
>> MBR] 
>> > bootloader:[microSD-(push-button)]:[/dev/mmcblk0]:[U-Boot 
>> 2019.04-00002-gc9b3922522]:[location: dd MBR] 
>> > bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot SPL 
>> 2019.04-00002-gbb4af0f50f (Jul 08 2019 - 11:44:39 -0500)]:[location: dd 
>> MBR] 
>> > bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 
>> 2019.04-00002-gbb4af0f50f]:[location: dd MBR] 
>> > UBOOT: Loaded Overlay:[BB-ADC-00A0] 
>> > UBOOT: Loaded Overlay:[BB-BONE-eMMC1-01-00A0] 
>> > UBOOT: Loaded Overlay:[BB-HDMI-TDA998x-00A0] 
>> > kernel:[4.19.59-bone-rt-r36] 
>>
>> probably fixed, between r36 and r61... 
>>
>>
>> http://gfnd.rcn-ee.org:81/farm/uptime/pwr08-ser16-bbg-4.19.180-bone-rt-r61.log
>>  
>>
>> kernel:[4.19.180-bone-rt-r61] 
>>
>> ls /dev/uio* -la 
>> crw-rw---- 1 root users 240, 0 Mar 16 15:10 /dev/uio0 
>> crw-rw---- 1 root users 240, 1 Mar 16 15:10 /dev/uio1 
>> crw-rw---- 1 root users 240, 2 Mar 16 15:10 /dev/uio2 
>> crw-rw---- 1 root users 240, 3 Mar 16 15:10 /dev/uio3 
>> crw-rw---- 1 root users 240, 4 Mar 16 15:10 /dev/uio4 
>> crw-rw---- 1 root users 240, 5 Mar 16 15:10 /dev/uio5 
>> crw-rw---- 1 root users 240, 6 Mar 16 15:10 /dev/uio6 
>> crw-rw---- 1 root users 240, 7 Mar 16 15:10 /dev/uio7 
>>
>> ( we need to change that to root:gpio...) 
>>
>> Regards, 
>>
>> -- 
>> Robert Nelson 
>> https://rcn-ee.com/ 
>>
>

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