projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| 8feaf0ce EV |
1 | * Texas Instrument OMAP SCM bandgap bindings |
| 2 | ||
| 3 | In the System Control Module, OMAP 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: | |
| 9c5c87e5 | 13 | - "ti,omap34xx-bandgap" : for OMAP34xx bandgap |
| b840b6e6 | 14 | - "ti,omap36xx-bandgap" : for OMAP36xx bandgap |
| 18da6351 EV |
15 | - "ti,omap4430-bandgap" : for OMAP4430 bandgap |
| 16 | - "ti,omap4460-bandgap" : for OMAP4460 bandgap | |
| 17 | - "ti,omap4470-bandgap" : for OMAP4470 bandgap | |
| 18 | - "ti,omap5430-bandgap" : for OMAP5430 bandgap | |
| 8feaf0ce EV |
19 | - interrupts : this entry should indicate which interrupt line |
| 20 | the talert signal is routed to; | |
| 21 | Specific: | |
| 57d16171 EV |
22 | - gpios : this entry should be used to inform which GPIO |
| 23 | line the tshut signal is routed to. The informed GPIO will | |
| 24 | be treated as an IRQ; | |
| 18da6351 EV |
25 | - regs : this entry must also be specified and it is specific |
| 26 | to each bandgap version, because the mapping may change from | |
| 27 | soc to soc, apart of depending on available features. | |
| 8feaf0ce EV |
28 | |
| 29 | Example: | |
| 9c5c87e5 PM |
30 | OMAP34xx: |
| 31 | bandgap { | |
| 32 | reg = <0x48002524 0x4>; | |
| 33 | compatible = "ti,omap34xx-bandgap"; | |
| 34 | }; | |
| 35 | ||
| b840b6e6 EV |
36 | OMAP36xx: |
| 37 | bandgap { | |
| 38 | reg = <0x48002524 0x4>; | |
| 39 | compatible = "ti,omap36xx-bandgap"; | |
| 40 | }; | |
| 41 | ||
| 18da6351 EV |
42 | OMAP4430: |
| 43 | bandgap { | |
| 44 | reg = <0x4a002260 0x4 0x4a00232C 0x4>; | |
| 45 | compatible = "ti,omap4430-bandgap"; | |
| 46 | }; | |
| 47 | ||
| 48 | OMAP4460: | |
| 49 | bandgap { | |
| 50 | reg = <0x4a002260 0x4 | |
| 51 | 0x4a00232C 0x4 | |
| 52 | 0x4a002378 0x18>; | |
| 53 | compatible = "ti,omap4460-bandgap"; | |
| 54 | interrupts = <0 126 4>; /* talert */ | |
| 57d16171 | 55 | gpios = <&gpio3 22 0>; /* tshut */ |
| 18da6351 | 56 | }; |
| 8feaf0ce | 57 | |
| 18da6351 | 58 | OMAP4470: |
| 8feaf0ce EV |
59 | bandgap { |
| 60 | reg = <0x4a002260 0x4 | |
| 61 | 0x4a00232C 0x4 | |
| 62 | 0x4a002378 0x18>; | |
| 18da6351 | 63 | compatible = "ti,omap4470-bandgap"; |
| 8feaf0ce | 64 | interrupts = <0 126 4>; /* talert */ |
| 57d16171 | 65 | gpios = <&gpio3 22 0>; /* tshut */ |
| 8feaf0ce | 66 | }; |
| efba1194 EV |
67 | |
| 68 | OMAP5430: | |
| 69 | bandgap { | |
| 70 | reg = <0x4a0021e0 0xc | |
| 71 | 0x4a00232c 0xc | |
| 72 | 0x4a002380 0x2c | |
| 73 | 0x4a0023C0 0x3c>; | |
| 74 | compatible = "ti,omap5430-bandgap"; | |
| 0c156959 | 75 | interrupts = <0 126 4>; /* talert */ |
| efba1194 | 76 | }; |
| ca0c7114 EV |
77 | |
| 78 | DRA752: | |
| 79 | bandgap { | |
| 80 | reg = <0x4a0021e0 0xc | |
| 81 | 0x4a00232c 0xc | |
| 82 | 0x4a002380 0x2c | |
| 83 | 0x4a0023C0 0x3c | |
| 84 | 0x4a002564 0x8 | |
| 85 | 0x4a002574 0x50>; | |
| 86 | compatible = "ti,dra752-bandgap"; | |
| 87 | interrupts = <0 126 4>; /* talert */ | |
| 88 | }; |