[SOLVED] RPi 3B+ with ARMv7?

BroX · 09-12-2019, 07:31 AM

Everywhere I read that The Raspberry Pi 3 and 3+ contain a quad-core ARMv8 (64-bit) CPU. But cpuinfo is telling me the following:

Code:

# cat /proc/cpuinfo
...
model name	: ARMv7 Processor rev 4 (v7l)
...
Hardware	: BCM2835
Revision	: a020d3
Serial		: 00000000450e63e8
Model		: Raspberry Pi 3 Model B Plus Rev 1.3

Are there different versions of RPi 3B+?

fatmac · 09-12-2019, 02:03 PM

Seems they use different processors.

https://www.raspberrypi.org/document...e/raspberrypi/

BCM2837

The Broadcom processor used in Raspberry Pi 3 (and later Raspberry Pi 2)

BCM2837B0

The Broadcom processor used in Raspberry Pi 3B+ and 3A+

Quote:

BCM2837

This is the Broadcom chip used in the Raspberry Pi 3, and in later models of the Raspberry Pi 2. The underlying architecture of the BCM2837 is identical to the BCM2836. The only significant difference is the replacement of the ARMv7 quad core cluster with a quad-core ARM Cortex A53 (ARMv8) cluster.

I think what you are maybe seeing is the processor that it was compiled for, all releases are backwards compatible.

kermitdafrog8 · 09-13-2019, 02:52 PM

Wouldn't it show v7 if you are using the 32bit kernel?

drmozes · 09-14-2019, 04:12 AM

Quote:

Originally Posted by fatmac

I think what you are maybe seeing is the processor that it was compiled for, all releases are backwards compatible.

This is hardware information.

BroX · 09-16-2019, 04:59 AM

Thanks for the responses.
Just reading what's on the chip tells me it is indeed a BCM2837. Apparently the kernel does not report it correctly. All is well.