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thermal: ti-bandgap: Add support for temperature sensor
[people/ms/u-boot.git] / doc / device-tree-bindings / thermal / ti_soc_thermal.txt
1 * Texas Instrument dra7xx SCM bandgap bindings
2
3 In the System Control Module, SoC supplies a voltage reference
4 and a temperature sensor feature that are gathered in the band
5 gap voltage and temperature sensor (VBGAPTS) module. The band
6 gap provides current and voltage reference for its internal
7 circuits and other analog IP blocks. The analog-to-digital
8 converter (ADC) produces an output value that is proportional
9 to the silicon temperature.
10
11 Required properties:
12 - compatible : Should be:
13 - "ti,dra752-bandgap"
14 - interrupts : this entry should indicate which interrupt line
15 the talert signal is routed to;
16 - regs : this is specific to each bandgap version, because
17 the mapping may change from soc to soc, apart from depending
18 on available features.
19
20 Optional:
21 - gpios : this entry should be used to inform which GPIO
22 line the tshut signal is routed to. The informed GPIO will
23 be treated as an IRQ;
24
25 Example:
26 bandgap {
27 reg = <0x4a0021e0 0xc
28 0x4a00232c 0xc
29 0x4a002380 0x2c
30 0x4a0023C0 0x3c
31 0x4a002564 0x8
32 0x4a002574 0x50>;
33 compatible = "ti,dra752-bandgap";
34 interrupts = <0 126 4>; /* talert */
35 };