prussdrv_open() on new debian kernel

joseph.f...@gmail.com

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Nov 28, 2017, 12:45:07 PM11/28/17

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I've been trying for hours to get PRU working on the latest supported kernel on my BBGW and BBG. I've edited the .dtb and when I cat the slots, it says its loaded, but every time I try to use the PRU, it fails on prussdrv_open(). Is there something different with the latest supported debian kernel I'm missing that changes how the PRUs work? When I try to roll back the kernel, the beagle fails to boot.

Robert Nelson

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Nov 28, 2017, 12:50:05 PM11/28/17

to Beagle Board, joseph.f...@gmail.com

Hi Joseph,

We've recently moved to U-Boot overlays:

https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays

sudo /opt/scripts/tools/version.sh

What kernel did you use to use?

Regards,

--
Robert Nelson
https://rcn-ee.com/

Joseph Foster

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Nov 30, 2017, 9:54:55 PM11/30/17

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sudo: /opt/scripts/tools/version.sh: command not found

I'm running 4.4.30-ti-r64

Robert Nelson

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Nov 30, 2017, 10:31:29 PM11/30/17

to Beagle Board, Joseph Foster

On Thu, Nov 30, 2017 at 8:54 PM, Joseph Foster
<joseph.f...@gmail.com> wrote:
> sudo: /opt/scripts/tools/version.sh: command not found
>
> I'm running 4.4.30-ti-r64

"confused" ... you said:

"I've been trying for hours to get PRU working on the latest supported kernel"

4.4.30-ti-r64 release …
RobertCNelson committed on Nov 4, 2016 (11/4/2016 2:19:40 PM)

That's from last year.. "definitely not latest"... ;)

So let's decide on what you really want..

OS: Debian 8.x (Jessie)
OS: Debian 9.x (Stretch)

PRU:

TI's remoteproc (v4.4.x-ti kernel, and used by librobotics')
Community: UIO (what we used in 3.8.x and ported to everything else)

So pick and option from OS and PRU and we'll point you to a new image
and kernel..

Joseph Foster

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Nov 30, 2017, 10:50:20 PM11/30/17

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I'm not sure really what librobotics is, and Debian 9.x (Stretch) would be preferred.

Robert Nelson

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Nov 30, 2017, 10:57:13 PM11/30/17

to Beagle Board, Joseph Foster

On Thu, Nov 30, 2017 at 9:50 PM, Joseph Foster
<joseph.f...@gmail.com> wrote:
> I'm not sure really what librobotics is, and Debian 9.x (Stretch) would be
> preferred.

Then pick your base: (bone-XYZ.img.xz files)

https://rcn-ee.net/rootfs/bb.org/testing/2017-11-26/

Use etcher.io to create the microSD

Stretch ships with v4.9.x-ti which uses a new version of pru_remoteproc.

So either downgrade to v4.4.x-ti with pru_remoteproc that was used
with the BeagleBone Blue (and robotics stuff)

Or upgrade to v4.14.x-bone and utiilze uio_pruss (compabile with all
the old 3.8.x pru directions)..

Then finally configure all the pins how you want:

https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Overlays

Joseph Foster

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Nov 30, 2017, 11:33:21 PM11/30/17

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How do I upgrade to v4.14.x-bone, the update_kernel.sh only lists TI kernels

Robert Nelson

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Nov 30, 2017, 11:55:35 PM11/30/17

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On Nov 30, 2017 10:33 PM, "Joseph Foster" <joseph.f...@gmail.com> wrote:

How do I upgrade to v4.14.x-bone, the update_kernel.sh only lists TI kernels

--bone-kernel --lts-4_14

Regards,

Joseph Foster

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Dec 1, 2017, 12:45:18 AM12/1/17

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Where would the slots file now be located. Its not in the /sys/devices/platform/bone_capemgr/ directory for me

Robert Nelson

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Dec 1, 2017, 11:52:30 AM12/1/17

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On Thu, Nov 30, 2017 at 11:45 PM, Joseph Foster
<joseph.f...@gmail.com> wrote:
> Where would the slots file now be located. Its not in the
> /sys/devices/platform/bone_capemgr/ directory for me

Slots file is disabled when using U-Boot Overlays:

Joseph Foster

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Dec 1, 2017, 9:59:46 PM12/1/17

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Ok so I am now load and execute on the PRUs, but how do I set the pinmux for the PRUs. I think it would use the U-Boot Cape Universal but the load example uses slots.

Robert Nelson

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Dec 1, 2017, 10:14:55 PM12/1/17

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On Fri, Dec 1, 2017 at 8:59 PM, Joseph Foster
<joseph.f...@gmail.com> wrote:
> Ok so I am now load and execute on the PRUs, but how do I set the pinmux for
> the PRUs. I think it would use the U-Boot Cape Universal but the load
> example uses slots.

you can use config-pin to mux in the pins for the pru...

Joseph Foster

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Dec 2, 2017, 3:20:09 AM12/2/17

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When setting config-pin P8.11 pruout, I get bash: /sys/devices/platform/ocp/ocp*P8_11_pinmux/state: No such file or directory

. Is there a specific overlay I need to use, my custom ones don't seem to work and the cape-universal-00A0.dtbo overlay locks my beagle into a boot loop.

Robert Nelson

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Dec 2, 2017, 3:14:58 PM12/2/17

to Beagle Board, Joseph Foster

On Sat, Dec 2, 2017 at 2:20 AM, Joseph Foster
<joseph.f...@gmail.com> wrote:
> When setting config-pin P8.11 pruout, I get bash:
> /sys/devices/platform/ocp/ocp*P8_11_pinmux/state: No such file or directory
> . Is there a specific overlay I need to use, my custom ones don't seem to
> work and the cape-universal-00A0.dtbo overlay locks my beagle into a boot
> loop.

P8_11 should be auto loaded, lets' check out your:

sudo /opt/scripts/tools/version.sh

Joseph Foster

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Dec 3, 2017, 10:42:35 PM12/3/17

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[sudo] password for debian:

git:/opt/scripts/:[e5c23dc2a45f5c9ace291dd32e7c3d79edc1932d]

eeprom:[A335BNLTGW1ABBGW17052298]

model:[TI_AM335x_BeagleBone_Green_Wireless]

dogtag:[BeagleBoard.org Debian Image 2017-11-26]

bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot 2017.11-00002-g7b415acfc1]

kernel:[4.14.3-bone5]

nodejs:[v6.12.0]

device-tree-override:[uboot_overlay_addr0=/lib/firmware/am335x-boneblack-nhdmi-overlay.dtb]

uboot_overlay_options:[enable_uboot_overlays=1]

uboot_overlay_options:[uboot_overlay_addr0=/lib/firmware/am335x-boneblack-nhdmi-overlay.dtb]

uboot_overlay_options:[uboot_overlay_pru=/lib/firmware/AM335X-PRU-UIO-00A0.dtbo]

uboot_overlay_options:[enable_uboot_cape_universal=1]

pkg:[bb-cape-overlays]:[4.4.20171120.0-0rcnee1~stretch+20171120]

pkg:[bb-wl18xx-firmware]:[1.20170829-0rcnee1~stretch+20170829]

pkg:[firmware-ti-connectivity]:[20170823-1rcnee0~stretch+20170830]

Robert Nelson

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Dec 3, 2017, 11:26:54 PM12/3/17

to Beagle Board, Joseph Foster

On Sun, Dec 3, 2017 at 9:42 PM, Joseph Foster
<joseph.f...@gmail.com> wrote:
> [sudo] password for debian:
> git:/opt/scripts/:[e5c23dc2a45f5c9ace291dd32e7c3d79edc1932d]
> eeprom:[A335BNLTGW1ABBGW17052298]
> model:[TI_AM335x_BeagleBone_Green_Wireless]
> dogtag:[BeagleBoard.org Debian Image 2017-11-26]
> bootloader:[eMMC-(default)]:[/dev/mmcblk1]:[U-Boot
> 2017.11-00002-g7b415acfc1]
> kernel:[4.14.3-bone5]
> nodejs:[v6.12.0]
> device-tree-override:[uboot_overlay_addr0=/lib/firmware/am335x-boneblack-nhdmi-overlay.dtb]
> uboot_overlay_options:[enable_uboot_overlays=1]
> uboot_overlay_options:[uboot_overlay_addr0=/lib/firmware/am335x-boneblack-nhdmi-overlay.dtb]

There's your issue ^^ remove that option.. it's block the
cape-universal overlay.

With U-Boot overlays, you need to disable the onboard hardware like so:

https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#U-Boot_Disable_on-board_devices

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