| * 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,omap34xx-bandgap" : for OMAP34xx bandgap |
| - "ti,omap36xx-bandgap" : for OMAP36xx bandgap |
| - "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: |
| OMAP34xx: |
| bandgap { |
| reg = <0x48002524 0x4>; |
| compatible = "ti,omap34xx-bandgap"; |
| }; |
| |
| OMAP36xx: |
| bandgap { |
| reg = <0x48002524 0x4>; |
| compatible = "ti,omap36xx-bandgap"; |
| }; |
| |
| 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 */ |
| }; |
