高温关机的设置在设备树里
路径：tina/lichee/linux-4.9/arch/arm64/boot/dts/sunxi对应的设备树文件，如sun50iw11p1.dtsi
temperature = <110000>;一项，单位是千分之一摄氏度，110000的意思就是110摄氏度自动关机
代码语言：javascript复制thermal-zones {
1367 cpu_thermal_zone {
1368 polling-delay-passive = <500>;
1369 polling-delay = <1000>;
1370 thermal-sensors = <&ths 0>;
1371 sustainable-power = <800>;
1372 k_po = <24>;
1373 k_pu = <48>;
1374 k_i = <0>;
1375
1376 cpu_trips: trips {
1377 cpu_threshold: trip-point@0 {
1378 temperature = <70000>;
1379 type = "passive";
1380 hysteresis = <0>;
1381 };
1382 cpu_target: trip-point@1 {
1383 temperature = <80000>;
1384 type = "passive";
1385 hysteresis = <0>;
1386 };
1387 cpu_crit: cpu_crit@0 {
1388 temperature = <110000>;
1389 type = "critical";
1390 hysteresis = <0>;
1391 };
1392 };
1393
1394 cooling-maps {
1395 map0 {
1396 trip = <&cpu_target>;
1397 cooling-device = <&cpu0
1398 THERMAL_NO_LIMIT
1399 THERMAL_NO_LIMIT>;
1400 contribution = <1024>;
1401 };
1402 };
1403 };
1404 };查看设备当前温度的节点在：
/sys/devices/virtual/thermal/thermal_zone0/temp
/sys/devices/virtual/thermal/下有几个目录(thermal_zone0)，第一个是cpu，第二个是gpu，读温度就是读目录下temp节点
单位也是千分之一摄氏度，读到36984，就是36.984摄氏度
