Andersan,
I still have nohz=off in my kernel command line, but I'll leave it to
Alan to elaborate on the issue, its effects and if it has been resolved.
All he said was "You'll also want to add nohz=off to your kernel command
line, as there seems to be something not right in the interrupt
controller with respect to tickless. I haven't gotten to the bottom of
that, but it's an SoC issue. "
In regards to how to add it to u-boot, the beaglebone has two
bootloaders - a cut down version of u-boot (MLO) that spawns a u-boot
with more enhanced features. This later bootloader is found on the
onboard eMMC (Fat) and is set up to load variables from the file uEnv.txt.
What you will want to do is mount that FAT filesystem:
mount /dev/mmcblk0p1 /media/card
Then edit uEnv.txt.
The file will have a line optargs=quiet. You can append the nohz=off to
the end of it.
Regards,
Craig
On 27/12/2013 10:56 AM, Andersan Xiley wrote:
Craig,
After deleting both files the cape-bone-mrf24j40-00A0.dtbo still
loaded . Then I realized I have done a stupid mistake. The kernel that
actually was running it was the factory version (3.8) from the eMMC
and not 3.11 from the sd-card. I fixed to boot from the sd-card and
now it is working fine. Thank you very much.
Just another question, Alan recommended to use the nohz=off to the
kernel command line. Is there any performance improvement?
I tried to set the environment variable but I am getting a error when
saving to the nand.
U-Boot# setenv mmcargs setenv bootargs console=${console} ${optargs}
root=${mmcroot} rootfstype=${mmcrootfstype} nohz=off
U-Boot# saveenv
Saving Environment to NAND...
Erasing Nand...
Attempt to erase non block-aligned data
Any ideia?
Thank you again,
Andersan
2013/12/25 Craig Peacock <craig.peacock.2...@beyondlogic.org
<mailto:craig.peacock.2...@beyondlogic.org>>
Andersan,
It sounds like your device tree overlay source file is fine. If I
were to have a stab in the dark, I would say you have an old
compiled overlay kicking around that is being loaded instead or
your new modified version. There appears to be two files doing the
rounds - BB-BONE-MRF24J40-00A0.dtbo & cape-bone-mrf24j40-00A0.dtbo.
Have you tried deleting /lib/firmware/BB-BONE-MRF24J40-00A0.dtbo
and /lib/firmware/cape-bone-mrf24j40-00A0.dtbo from your rootfs
and reloading the cape? It should report something like (This is
on 3.12.5) :
bone-capemgr bone_capemgr.6: failed to load firmware
'BB-BONE-MRF24J40-00A0.dtbo'
Then with confidence that there is no conflicting dtbo files left,
copy your newly created file over to /lib/firmware and try again.
I note on my 3.12.5 that it will load BB-BONE-MRF24J40-00A0.dtbo
and not cape-bone-mrf24j40-00A0.dtbo. I also note my kernel
messages show "Requesting firmware 'BB-BONE-MRF24J40-00A0.dtbo'
for board-name 'Bone-MRF24J40', version '00A0'"
Your version (3.11) says "Requesting firmware
'cape-bone-mrf24j40-00A0.dtbo' for board-name 'Bone-MRF24J40',
version '00A0'"
Regards,
Craig
On 26/12/2013 5:00 AM, Andersan Xiley wrote:
Hi Craig,
Thanks for the prompt reply.
I have already fixed the file as described and reloaded
the cape-bone-mrf24j40-00A0.dtbo, but I still get the problem.
Am i missing something?
Best regards,
Andersan
2013/12/25 Craig Peacock <craig.peacock.2...@beyondlogic.org
<mailto:craig.peacock.2...@beyondlogic.org>>
Andersan,
There was an eariler typo in the .dts file. Change
compatible = "ti,beaglebone", "ti-beaglebone-black";
to
compatible = "ti,beaglebone", "ti,beaglebone-black";
Regards,
Craig
On 25/12/2013 2:05 PM, Andersan Xiley wrote:
Hello Guys,
I fixed the cape-bone-mrf24j40-00A0.dts and reloaded as
described, but I still get the error:
# echo BB-BONE-MRF24J40 > /sys/devices/bone_capemgr.8/slots
[ 592.444140] bone-capemgr bone_capemgr.8: slot #8:
Incompatible with baseboard for 'BB-BONE-MRF24J40'
[ 592.453778] bone-capemgr bone_capemgr.8: slot #8: Failed
verification
dmesg shows:
[ 40.805384] bone-capemgr bone_capemgr.8: part_number
'BB-BONE-MRF24J40', version 'N/A'
[ 40.805471] bone-capemgr bone_capemgr.8: slot #7:
specific override
[ 40.805497] bone-capemgr bone_capemgr.8: bone: Using
override eeprom data at slot 7
[ 40.805516] bone-capemgr bone_capemgr.8: slot #7:
'Bone-MRF24J40,00A0,Signal 11 Softwa,BB-BONE-MRF24J40'
[ 40.805640] bone-capemgr bone_capemgr.8: slot #7:
Requesting firmware 'cape-bone-mrf24j40-00A0.dtbo' for
board-name 'Bone-MRF24J40', version '00A0'
[ 40.805664] bone-capemgr bone_capemgr.8: slot #7: dtbo
'cape-bone-mrf24j40-00A0.dtbo' loaded; converting to live tree
[ 40.805870] bone-capemgr bone_capemgr.8: slot #7:
Incompatible with baseboard for 'BB-BONE-MRF24J40'
[ 40.815517] bone-capemgr bone_capemgr.8: slot #7: Failed
verification
I'm using the kernel 3.11.
Any idea?
Regards,
2013/11/8 Alan Ott <a...@signal11.us <mailto:a...@signal11.us>>
On 11/08/2013 01:05 PM, Andersan Xiley wrote:
I'm in doubt about buying the BeagleBone Black version.
The project on the link below is suppose to work on
the BeagleBone Black?
https://github.com/beagleboard/kernel/tree/3.8
Yes. Use the 3.11 branch. Use Craig Peacock's tutorial
posted today to this list.
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