Lines Matching refs:sensor

25 * Thermal sensor devices
27 Thermal sensor devices are nodes providing temperature sensing capabilities on
29 nodes providing temperature data to thermal zones. Thermal sensor devices may
33 - #thermal-sensor-cells: Used to provide sensor device specific information
34   Type: unsigned	 while referring to it. Typically 0 on thermal sensor
35   Size: one cell	 nodes with only one sensor, and at least 1 on nodes
37 			 to identify uniquely the sensor instances within
39 			 on how consumers refer to sensor devices.
146 - thermal-sensors:	A list of thermal sensor phandles and sensor specifier
148   phandles + sensor
167 			by means of sensor ID. Additional coefficients are
197 using one single sensor as temperature source and many cooling devices and
245 	 * A simple IC with a single bandgap temperature sensor.
249 		#thermal-sensor-cells = <0>;
296 In the example above, the ADC sensor (bandgap0) at address 0x0000ED00 is
297 used to monitor the zone 'cpu-thermal' using its sole sensor. A fan
313 single sensor IC, assuming it has several internal sensors. This is a common
315 requirements, and thus may have their own sensor to monitor or detect internal
327 		#thermal-sensor-cells = <1>;
336 				/* sensor       ID */
363 				/* sensor       ID */
390 				/* sensor       ID */
420 Thus, there is a need to assign each sensor provided by the bandgap IC
422 #thermal-sensor-cells property and using the first cell of the sensor
423 specifier as sensor ID. In the example, then, <bandgap 0> is used to
432 The example below illustrates how to use more than one sensor within
440 	 * A simple IC with a single temperature sensor.
442 	adc: sensor@0x49 {
444 		#thermal-sensor-cells = <0>;
451 	 * A simple IC with a single bandgap temperature sensor.
455 		#thermal-sensor-cells = <0>;
480 In some cases, there is a need to use more than one sensor to extrapolate
482 For instance, it may be the case that a sensor external to CPU IP may be placed
483 close to CPU hotspot and together with internal CPU sensor, it is used
493 from the ADC sensor. The binding would be then:
509 	 * An IC with several temperature sensor.
511 	adc_dummy: sensor@0x50 {
513 		#thermal-sensor-cells = <1>; /* sensor internal ID */
522 				/* sensor       ID */
538 				/* sensor       ID */
543 		 * An array of coefficients describing the sensor
593 The above example is a mix of previous examples, a sensor IP with several internal