89 lines
2.2 KiB
Plaintext
89 lines
2.2 KiB
Plaintext
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* Texas Instrument OMAP SCM bandgap bindings
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In the System Control Module, OMAP supplies a voltage reference
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and a temperature sensor feature that are gathered in the band
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gap voltage and temperature sensor (VBGAPTS) module. The band
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gap provides current and voltage reference for its internal
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circuits and other analog IP blocks. The analog-to-digital
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converter (ADC) produces an output value that is proportional
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to the silicon temperature.
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Required properties:
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- compatible : Should be:
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- "ti,omap34xx-bandgap" : for OMAP34xx bandgap
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- "ti,omap36xx-bandgap" : for OMAP36xx bandgap
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- "ti,omap4430-bandgap" : for OMAP4430 bandgap
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- "ti,omap4460-bandgap" : for OMAP4460 bandgap
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- "ti,omap4470-bandgap" : for OMAP4470 bandgap
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- "ti,omap5430-bandgap" : for OMAP5430 bandgap
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- interrupts : this entry should indicate which interrupt line
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the talert signal is routed to;
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Specific:
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- gpios : this entry should be used to inform which GPIO
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line the tshut signal is routed to. The informed GPIO will
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be treated as an IRQ;
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- regs : this entry must also be specified and it is specific
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to each bandgap version, because the mapping may change from
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soc to soc, apart of depending on available features.
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Example:
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OMAP34xx:
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bandgap {
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reg = <0x48002524 0x4>;
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compatible = "ti,omap34xx-bandgap";
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};
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OMAP36xx:
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bandgap {
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reg = <0x48002524 0x4>;
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compatible = "ti,omap36xx-bandgap";
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};
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OMAP4430:
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bandgap {
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reg = <0x4a002260 0x4 0x4a00232C 0x4>;
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compatible = "ti,omap4430-bandgap";
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};
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OMAP4460:
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bandgap {
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reg = <0x4a002260 0x4
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0x4a00232C 0x4
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0x4a002378 0x18>;
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compatible = "ti,omap4460-bandgap";
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interrupts = <0 126 4>; /* talert */
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gpios = <&gpio3 22 0>; /* tshut */
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};
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OMAP4470:
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bandgap {
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reg = <0x4a002260 0x4
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0x4a00232C 0x4
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0x4a002378 0x18>;
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compatible = "ti,omap4470-bandgap";
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interrupts = <0 126 4>; /* talert */
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gpios = <&gpio3 22 0>; /* tshut */
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};
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OMAP5430:
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bandgap {
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reg = <0x4a0021e0 0xc
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0x4a00232c 0xc
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0x4a002380 0x2c
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0x4a0023C0 0x3c>;
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compatible = "ti,omap5430-bandgap";
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interrupts = <0 126 4>; /* talert */
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};
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DRA752:
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bandgap {
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reg = <0x4a0021e0 0xc
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0x4a00232c 0xc
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0x4a002380 0x2c
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0x4a0023C0 0x3c
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0x4a002564 0x8
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0x4a002574 0x50>;
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compatible = "ti,dra752-bandgap";
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interrupts = <0 126 4>; /* talert */
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};
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