BPi-R3 NVME temperature sensor

Banana Pi Router design BPI-R3/R3 Mini(MT7986)
1

Hi all,

I have short question about BPi-R3: Anybody tried to enable CONFIG_NVME_HWMON=y kernel conf option to get NVME temperatures directly with /sys/class/hwmon and sensors?

It is available since linux kernel version 5.5 but i don’t know how it is supported on archs and devices different than x86. ‘Big’ distros have it enabled and it makes nvme temperature monitoring much easier than using smartctl or nvme-cli.

Thanks :slight_smile:

2

i have not tested it yet, but i guess this is not specific to bananapi and should work…i would say just test if it works :wink: and report back…then i can add this option to my defconfig

3

Hi.

Can confirm, works fine, for me at least, didn’t it test it for stability etc., but it just reads temperature. :slight_smile: Any chance that this option could land in upstream OpenWRT? :slight_smile:

Some config and output, maybe it will be helpful: sensors output"

nvme-pci-0100
Adapter: PCI adapter
Composite:    +53.9°C

for installed ssd 01:00.0 Non-Volatile memory controller: Samsung Electronics Co Ltd NVMe SSD Controller SM951/PM951 (rev 01)

and /sys/class/nvme

root@OpenWrt:/sys/class/nvme/nvme0# ls
address            dev                firmware_rev       kato               ng0n1              nvme0n1            queue_count        reset_controller   sqsize             subsysnqn          transport
cntlid             device             hwmon4             model              numa_node          power              rescan_controller  serial             state              subsystem          uevent
root@OpenWrt:/sys/class/nvme/nvme0# ls hwmon4
device       name         of_node      power        subsystem    temp1_alarm  temp1_input  temp1_label  uevent
root@OpenWrt:/sys/class/nvme/nvme0# cat hwmon4/temp1_input
46850

build for Linux OpenWrt 5.15.118 #0 SMP Mon Jun 26 11:20:39 2023 aarch64 GNU/Linux OpenWRT v23.05.0-rc2 sources, just CONFIG_NVME_HWMON=y

# NVME Support
CONFIG_NVME_CORE=m
CONFIG_BLK_DEV_NVME=m
# CONFIG_NVME_MULTIPATH is not set
CONFIG_NVME_HWMON=y
# CONFIG_NVME_FC is not set
# CONFIG_NVME_TCP is not set
# CONFIG_NVME_TARGET is not set
# end of NVME Support
1 Like
4

Agreed, that should be enabled by default.

5

Great idea, I’ve enabled it in my defconfig…

6

This setting is already enabled in master branch OpenWRT for x86/64 platform, as I understand.

Can someone enable it for 23.05 OpenWRT version too?

7

Will this be implemented in 23.05.x OpenWRT builds by default?

8

Hello Eric, can you please post step buy step procedure on how to do that?

9

@NsinghP How to do what?

10

How to configure it in defcong

11

I only use my own ArchLinux images … You need instructions for this image?

12

Sorry, That will not work, I need to figure out a way to monitor SSD temp on OpenWrt and BPi-R3. I have already cut a hole in the bottom of case to let some air in.

13

then just enable the kernel-options and rebuild via make kernel_menuconfig as stated here: https://openwrt.org/docs/guide-developer/toolchain/use-buildsystem

you can also modify defconfig in openwrt…here is the defconfig (here 6.1): https://git.openwrt.org/?p=openwrt/openwrt.git;a=blob;f=target/linux/mediatek/filogic/config-6.1;h=36cb9c1e4e6be8d145e208ec0c53795d99d16c56;hb=HEAD

if using linux 5.15 use the other defconfig in same folder and add the missing options before building openwrt