From patchwork Thu Aug 21 16:02:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Nishanth Menon X-Patchwork-Id: 4758681 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork1.web.kernel.org (Postfix) with ESMTP id CC9EA9F2E8 for ; Thu, 21 Aug 2014 16:03:25 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id B4D4220179 for ; Thu, 21 Aug 2014 16:03:24 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id BB85020160 for ; Thu, 21 Aug 2014 16:03:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752537AbaHUQDD (ORCPT ); Thu, 21 Aug 2014 12:03:03 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:51493 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752403AbaHUQCx (ORCPT ); Thu, 21 Aug 2014 12:02:53 -0400 Received: from dflxv15.itg.ti.com ([128.247.5.124]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id s7LG2NDr004156; Thu, 21 Aug 2014 11:02:23 -0500 Received: from DFLE73.ent.ti.com (dfle73.ent.ti.com [128.247.5.110]) by dflxv15.itg.ti.com (8.14.3/8.13.8) with ESMTP id s7LG2NJL005598; Thu, 21 Aug 2014 11:02:23 -0500 Received: from dlep33.itg.ti.com (157.170.170.75) by DFLE73.ent.ti.com (128.247.5.110) with Microsoft SMTP Server id 14.3.174.1; Thu, 21 Aug 2014 11:02:22 -0500 Received: from localhost (ileax41-snat.itg.ti.com [10.172.224.153]) by dlep33.itg.ti.com (8.14.3/8.13.8) with ESMTP id s7LG2MTR018918; Thu, 21 Aug 2014 11:02:22 -0500 From: Nishanth Menon To: Dmitry Torokhov , Dmitry Torokhov CC: , , , , , Nishanth Menon Subject: [PATCH V2 1/2] doc: dt/bindings: input: introduce palmas power button description Date: Thu, 21 Aug 2014 11:02:14 -0500 Message-ID: <1408636935-29515-2-git-send-email-nm@ti.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1408636935-29515-1-git-send-email-nm@ti.com> References: <1408392810-16011-1-git-send-email-nm@ti.com> <1408636935-29515-1-git-send-email-nm@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org X-Spam-Status: No, score=-7.6 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Many palmas family of PMICs have support for interrupt based power button. This allows the device to notify the processor of external push button events over the shared palmas interrupt. Document the hardware support for the same. Signed-off-by: Nishanth Menon --- Changes in v2: - Added debounce description for palmas variants like TWL6037 that actually allow it. - Review comments incorportated. V1: https://patchwork.kernel.org/patch/4739061/ .../bindings/input/ti,palmas-pwrbutton.txt | 36 ++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt diff --git a/Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt b/Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt new file mode 100644 index 0000000..a3dde8c --- /dev/null +++ b/Documentation/devicetree/bindings/input/ti,palmas-pwrbutton.txt @@ -0,0 +1,36 @@ +Texas Instruments Palmas family power button module + +This module is part of the Palmas family of PMICs. For more details +about the whole chip see: +Documentation/devicetree/bindings/mfd/palmas.txt. + +This module provides a simple power button event via an Interrupt. + +Required properties: +- compatible: should be one of the following + - "ti,palmas-pwrbutton": For Palmas compatible power on button +- interrupt-parent: Parent interrupt device, must be handle of palmas node. +- interrupts: Interrupt number of power button submodule on device. + +Optional Properties: + +- ti,palmas-long-press-seconds: Duration in seconds which the power + button should be kept pressed for Palmas to power off automatically. + NOTE: This depends on OTP support and POWERHOLD signal configuration + on platform. Valid values are 6, 8, 10 and 12. +- ti,palmas-pwron-debounce-milli-seconds: Duration in milliseconds + which the power button should be kept pressed for Palmas to register + a press for debouncing purposes. NOTE: This depends on specific + Palmas variation capability. Valid values are 15, 100, 500 and 1000. + +Example: + +&palmas { + palmas_pwr_button: pwrbutton { + compatible = "ti,palmas-pwrbutton"; + interrupt-parent = <&tps659038>; + interrupts = <1 IRQ_TYPE_EDGE_FALLING>; + ti,palmas-long-press-seconds = <12>; + ti,palmas-pwron-debounce-milli-seconds = <15>; + }; +};