projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| aeb5032b BC |
1 | Texas Instruments TWL family |
| 2 | ||
| 3 | The TWLs are Integrated Power Management Chips. | |
| 4 | Some version might contain much more analog function like | |
| 5 | USB transceiver or Audio amplifier. | |
| 6 | These chips are connected to an i2c bus. | |
| 7 | ||
| 8 | ||
| 9 | Required properties: | |
| 10 | - compatible : Must be "ti,twl4030"; | |
| 11 | For Integrated power-management/audio CODEC device used in OMAP3 | |
| 12 | based boards | |
| 13 | - compatible : Must be "ti,twl6030"; | |
| 14 | For Integrated power-management used in OMAP4 based boards | |
| 15 | - interrupts : This i2c device has an IRQ line connected to the main SoC | |
| 16 | - interrupt-controller : Since the twl support several interrupts internally, | |
| 17 | it is considered as an interrupt controller cascaded to the SoC one. | |
| 18 | - #interrupt-cells = <1>; | |
| 19 | - interrupt-parent : The parent interrupt controller. | |
| 20 | ||
| 21 | Optional node: | |
| 22 | - Child nodes contain in the twl. The twl family is made of several variants | |
| 23 | that support a different number of features. | |
| 24 | The children nodes will thus depend of the capability of the variant. | |
| 25 | ||
| 26 | ||
| 27 | Example: | |
| 28 | /* | |
| 29 | * Integrated Power Management Chip | |
| 30 | * http://www.ti.com/lit/ds/symlink/twl6030.pdf | |
| 31 | */ | |
| 32 | twl@48 { | |
| 33 | compatible = "ti,twl6030"; | |
| 34 | reg = <0x48>; | |
| 35 | interrupts = <39>; /* IRQ_SYS_1N cascaded to gic */ | |
| 36 | interrupt-controller; | |
| 37 | #interrupt-cells = <1>; | |
| 38 | interrupt-parent = <&gic>; | |
| 39 | #address-cells = <1>; | |
| 40 | #size-cells = <0>; | |
| 41 | ||
| 42 | twl_rtc { | |
| 43 | compatible = "ti,twl_rtc"; | |
| 44 | interrupts = <11>; | |
| 45 | reg = <0>; | |
| 46 | }; | |
| 47 | }; |