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- * Texas Instrument OMAP SCM bandgap bindings
- In the System Control Module, OMAP supplies a voltage reference
- and a temperature sensor feature that are gathered in the band
- gap voltage and temperature sensor (VBGAPTS) module. The band
- gap provides current and voltage reference for its internal
- circuits and other analog IP blocks. The analog-to-digital
- converter (ADC) produces an output value that is proportional
- to the silicon temperature.
- Required properties:
- - compatible : Should be:
- - "ti,omap4430-bandgap" : for OMAP4430 bandgap
- - "ti,omap4460-bandgap" : for OMAP4460 bandgap
- - "ti,omap4470-bandgap" : for OMAP4470 bandgap
- - "ti,omap5430-bandgap" : for OMAP5430 bandgap
- - interrupts : this entry should indicate which interrupt line
- the talert signal is routed to;
- Specific:
- - gpios : this entry should be used to inform which GPIO
- line the tshut signal is routed to. The informed GPIO will
- be treated as an IRQ;
- - regs : this entry must also be specified and it is specific
- to each bandgap version, because the mapping may change from
- soc to soc, apart of depending on available features.
- Example:
- OMAP4430:
- bandgap {
- reg = <0x4a002260 0x4 0x4a00232C 0x4>;
- compatible = "ti,omap4430-bandgap";
- };
- OMAP4460:
- bandgap {
- reg = <0x4a002260 0x4
- 0x4a00232C 0x4
- 0x4a002378 0x18>;
- compatible = "ti,omap4460-bandgap";
- interrupts = <0 126 4>; /* talert */
- gpios = <&gpio3 22 0>; /* tshut */
- };
- OMAP4470:
- bandgap {
- reg = <0x4a002260 0x4
- 0x4a00232C 0x4
- 0x4a002378 0x18>;
- compatible = "ti,omap4470-bandgap";
- interrupts = <0 126 4>; /* talert */
- gpios = <&gpio3 22 0>; /* tshut */
- };
- OMAP5430:
- bandgap {
- reg = <0x4a0021e0 0xc
- 0x4a00232c 0xc
- 0x4a002380 0x2c
- 0x4a0023C0 0x3c>;
- compatible = "ti,omap5430-bandgap";
- interrupts = <0 126 4>; /* talert */
- };
- DRA752:
- bandgap {
- reg = <0x4a0021e0 0xc
- 0x4a00232c 0xc
- 0x4a002380 0x2c
- 0x4a0023C0 0x3c
- 0x4a002564 0x8
- 0x4a002574 0x50>;
- compatible = "ti,dra752-bandgap";
- interrupts = <0 126 4>; /* talert */
- };
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