arcsyst
Posts: 1
Joined: Sat Mar 17, 2018 10:43 am

Upgraded Pi2 to 3 CPU limits unchanged

Sat Mar 17, 2018 10:54 am

I have upgraded from a Pi2 to Pi3 however all the cpu clock settings remain as Pi2, changing config.txt changes nothing.


cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
600000 700000
cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_max_freq
700000
cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
700000

cat /boot/config.txt
#Clock Settings
#arm_freq=800
#gpu_mem=16
#core_freq=250
#sdram_freq=400
#over_voltage=0

# Enable I2c interface post kernel 3.18
dtparam=i2c_arm=on
dtparam=i2c1=on

cat /proc/cpuinfo
processor : 0
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 1
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 2
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

processor : 3
model name : ARMv7 Processor rev 4 (v7l)
BogoMIPS : 38.40
Features : half thumb fastmult vfp edsp neon vfpv3 tls vfpv4 idiva idivt vfpd32 lpae evtstrm crc32
CPU implementer : 0x41
CPU architecture: 7
CPU variant : 0x0
CPU part : 0xd03
CPU revision : 4

Hardware : BCM2835
Revision : a02082
Serial : 00000000a868f088

Any help appreciated.

baggertje99
Posts: 6
Joined: Sat Feb 02, 2013 8:57 pm

Re: Upgraded Pi2 to 3 CPU limits unchanged

Fri Sep 13, 2019 9:27 pm

I have the exact same output for /proc/cpuinfo.

BUT I INSTALLED A NEW VERSION OF RASPBIAN ON A NEW MICRO SD CARD.

I'm also running a raspberry pi model '3B', but I haven't used this sd in any other Pi...

WTF??? (also it is a raspberry pi 3B, not 3b+, but it has the broadcom wifi/bluetooth chip of a 3B+)...

trejan
Posts: 526
Joined: Tue Jul 02, 2019 2:28 pm

Re: Upgraded Pi2 to 3 CPU limits unchanged

Fri Sep 13, 2019 9:30 pm

Why does cpuinfo report I have a BCM2835?

The upstream Linux kernel developers had decided that all models of Raspberry Pi return bcm2835 as the SoC name. At Raspberry Pi we like to use as much upstream kernel code as possible, as it makes software maintenance much easier, so we use this code. Unfortunately it means that cat /proc/cpuinfo is inaccurate for the Raspberry Pi 2, Raspberry Pi 3 and Raspberry Pi 4, which use the bcm2836/bcm2837, bcm2837 and bcm2711 respectively. You can use cat /proc/device-tree/model to get an accurate description of the SoC on your Raspberry Pi model.
baggertje99 wrote:
Fri Sep 13, 2019 9:27 pm
WTF??? (also it is a raspberry pi 3B, not 3b+, but it has the broadcom wifi/bluetooth chip of a 3B+)...
This was already explained in your other post.

User avatar
HawaiianPi
Posts: 4536
Joined: Mon Apr 08, 2013 4:53 am
Location: Aloha, Oregon USA

Re: Upgraded Pi2 to 3 CPU limits unchanged

Fri Sep 13, 2019 9:41 pm

arcsyst wrote:
Sat Mar 17, 2018 10:54 am
I have upgraded from a Pi2 to Pi3 however all the cpu clock settings remain as Pi2, changing config.txt changes nothing.


cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
600000 700000
That makes no sense, as the Pi2 was clocked at 900MHz max. Nothing since the old Pi1 models has been capped at 700MHz (even the Pi0 is faster). Are you sure it's a Pi3 and not a Pi1 model B+?

What does the following command return?

Code: Select all

cat /sys/firmware/devicetree/base/model;echo

EDIT:
~ $ cat /sys/firmware/devicetree/base/model;echo
Raspberry Pi 3 Model B Rev 1.2
~ $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
600000 1200000

~ $ cat /sys/firmware/devicetree/base/model;echo
Raspberry Pi 3 Model B Plus Rev 1.3
~ $ cat /sys/devices/system/cpu/cpu0/cpufreq/scaling_available_frequencies
600000 1400000
My mind is like a browser. 27 tabs are open, 9 aren't responding,
lots of pop-ups...and where is that annoying music coming from?

Return to “General discussion”