Messages in this thread | | | Date | Thu, 24 Oct 2013 00:49:42 +0200 | From | Sebastian Reichel <> | Subject | Re: [PATCHv5 1/3] Input: twl4030-pwrbutton - add device tree support |
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On Wed, Oct 23, 2013 at 05:24:14PM -0500, Rob Herring wrote: > So a twl4030 device is only a power button? DT should describe the h/w > not a node for a sub-function of a device.
No. TWL4030 is a companion chip for the OMAP3 processor. It provides miscellaneous functionality, e.g.:
* RTC * Watchdog * Regulators * Keypad Matrix * USB * Audio * Vibrator * GPIO * ...
One part of the functionality is the power button. The patch assumes, that the twl4030-pwrbutton node is used as follows:
twl { /* ... common stuff ... */
pwrbutton { compatible = "ti,twl4030-pwrbutton"; interrupts = <8>; }; };
See also: * Documentation/devicetree/bindings/mfd/twl-familly.txt * Documentation/devicetree/bindings/watchdog/twl4030-wdt.txt * Documentation/devicetree/bindings/sound/omap-twl4030.txt * Documentation/devicetree/bindings/mfd/twl4030-power.txt * Documentation/devicetree/bindings/mfd/twl4030-audio.txt * Documentation/devicetree/bindings/gpio/gpio-twl4030.txt
-- Sebastian [unhandled content-type:application/pgp-signature] | |