Hi,
We are using imx8m mini evk board.
BSP Version - 5.4.24 linux bsp.
yocto compilation everything was successful but after flashed image file to emmc after booting we are getting error message.
NXP i.MX Release Distro 5.4-zeus eht3pt ttymxc1
eht3pt login: root
[ 11.873939] audit: type=1006 audit(1609762368.660:2): pid=637 uid=0 old-auid=4294967295 auid=0 tty=(none) old-ses=4294967295 ses=1 res=1
root@eht3pt:~#
root@eht3pt:~# [ 60.383197] imx-sdma 302c0000.dma-controller: external firmware not found, using ROM firmware
[ 60.383352] imx-sdma 302b0000.dma-controller: external firmware not found, using ROM firmware
[ 60.397676] imx-sdma 30bd0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2
[ 60.410759] imx-sdma 30bd0000.dma-controller: Falling back to sysfs fallback for: imx/sdma/sdma-imx7d.bin
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~# [ 64.479176] cfg80211: failed to load regulatory.db
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~# [ 121.823175] imx-sdma 30bd0000.dma-controller: external firmware not found, using ROM firmware
Firmware module added into yocto conf file.
Why we are getting above errors ?
Because of these error reboot also not happening.
Please help us to solve this issue.
Regards,
Vasu
Hi @jimmychan
@ceggers1 mentioned manually adding method.
I have added linux-firmware in yocto conf but sdma not added.
We are using imx8m mini evk board.
BSP Version - 5.4.24 linux bsp.
Which yocto stable version we need to use ?
Latest yocto version also having same issue ?
Thanks & Regards,
Vasu
Hi Guys,
Thank for your reply.
Solution 2: Build the imx-sdma driver as a kernel module. At the time when the module is loaded, also the SDMA firmware file will be available.
I had followed above steps but getting same error.
Followed Steps :
root@eht3pt:~# [ 33.763442] VSD_3V3: disabling
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~#
root@eht3pt:~# [ 64.483565] cfg80211: failed to load regulatory.db
[ 66.531570] imx-sdma 302c0000.dma-controller: external firmware not found, using ROM firmware
[ 66.531735] imx-sdma 30bd0000.dma-controller: external firmware not found, using ROM firmware
[ 66.531778] imx-sdma 302b0000.dma-controller: Direct firmware load for imx/sdma/sdma-imx7d.bin failed with error -2
[ 66.531784] imx-sdma 302b0000.dma-controller: Falling back to sysfs fallback for: imx/sdma/sdma-imx7d.bin
Thanks & Regards,
Vasu
Please try : bitbake core-image-minimal -f
Hi Vasu,
please check
regards
Christian
Hi @ceggers1
The firmware file (should be located here: /lib/firmware/imx/sdma/sdma-imx7d.bin).
- bin file not present in the above location.
local.conf added
- linux-firmware
- firmware-imx
Anything else needs to add ?
Thanks & Regards,
Vasu
Hi Vasu,
does the SDMA firmware file now exist on you file system. If it's still missing, you can download it here:
https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/imx/sdma
Do you still have firmware loading problems now?
regards,
Christian
Hi @ceggers1,
Manually copied into /lib/firmware/imx/sdma/ location.
Now not showing missing bin file.
root@eht3pt:~# [ 33.759426] VSD_3V3: disabling
root@eht3pt:~# [ 64.706124] cfg80211: failed to load regulatory.db
Why above two line is printing.
How to solve above two line issue.
Thanks & Regards,
Vasu
Hi,
please compile the i.MX SDMA driver as a kernel module (instead of static linking). For further explanation please see my existing answers to the same question.
regards
Christian