log cpr voltages (#20519)

selfdrive/thermald/thermald.py

@@ -2,6 +2,7 @@
 import datetime
 import os
 import time
+from pathlib import Path
 from typing import Dict, Optional, Tuple
 
 import psutil
@@ -191,6 +192,18 @@ def thermald_thread():
 
   thermal_config = HARDWARE.get_thermal_config()
 
+  # CPR3 logging
+  base_path = "/sys/kernel/debug/cpr3-regulator/"
+  cpr_files = [p for p in Path(base_path).glob("**/*") if p.is_file()]
+  cpr_data = {}
+  for cf in cpr_files:
+    with open(cf, "r") as f:
+      try:
+        cpr_data[str(cf)] = f.read().strip()
+      except Exception:
+        pass
+  cloudlog.event("CPR", data=cpr_data)
+
   while 1:
     pandaState = messaging.recv_sock(pandaState_sock, wait=True)
     msg = read_thermal(thermal_config)