Xiaomi “Redmi AX6000” seems to have temp sensors now

For Developers
1

I see we now have some temperature sensor support for this hardware:

/sys/devices/platform/soc/18000000.wmac/ieee80211/phy0/hwmon1/temp1_crit
/sys/devices/platform/soc/18000000.wmac/ieee80211/phy0/hwmon1/temp1_input
/sys/devices/platform/soc/18000000.wmac/ieee80211/phy0/hwmon1/temp1_max
/sys/devices/platform/soc/18000000.wmac/ieee80211/phy1/hwmon2/temp1_crit
/sys/devices/platform/soc/18000000.wmac/ieee80211/phy1/hwmon2/temp1_input
/sys/devices/platform/soc/18000000.wmac/ieee80211/phy1/hwmon2/temp1_max
/sys/devices/virtual/thermal/thermal_zone0/hwmon0/temp1_crit
/sys/devices/virtual/thermal/thermal_zone0/hwmon0/temp1_input
/sys/devices/virtual/thermal/thermal_zone0/temp
/sys/firmware/devicetree/base/thermal-zones/cpu-thermal/trips/active-med/temperature
/sys/firmware/devicetree/base/thermal-zones/cpu-thermal/trips/active-low/temperature
/sys/firmware/devicetree/base/thermal-zones/cpu-thermal/trips/active-high/temperature
/sys/firmware/devicetree/base/thermal-zones/cpu-thermal/trips/crit/temperature
/sys/firmware/devicetree/base/thermal-zones/cpu-thermal/trips/hot/temperature

Does anyone know which of these read outs corresponds to which CPU?

# cat /sys/devices/platform/soc/18000000.wmac/ieee80211/phy0/hwmon1/temp1_input /sys/devices/platform/soc/18000000.wmac/ieee80211/phy1/hwmon2/temp1_input /sys/devices/virtual/thermal/thermal_zone0/hwmon0/temp1_input /sys/devices/virtual/thermal/thermal_zone0/temp
40000
42000
36533
36533

Guessing:
CPU = /sys/devices/virtual/thermal/thermal_zone0/temp
5 GHz Radio= /sys/devices/platform/soc/18000000.wmac/ieee80211/phy0/hwmon1/temp1_input
2.4 GHz Radio = /sys/devices/platform/soc/18000000.wmac/ieee80211/phy1/hwmon2/temp1_input

2

I've been tracking those temperatures in my devices for a few months now, and what I see is:

CPU=/sys/devices/virtual/thermal/thermal_zone0/temp
2.4 GHz radio=/sys/devices/platform/soc/18000000.wmac/ieee80211/phy0/hwmon0/temp1_input
5 GHz radio=/sys/devices/platform/soc/18000000.wmac/ieee80211/phy1/hwmon1/temp1_input

3

Based on my testing with iperf3, I believe the 5 GHz chip is the one of phy1 and the 2.4 GHz chip is the one on phy0 so consistent with your post.