From patchwork Wed Jun 20 05:15:36 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chen-Yu Tsai X-Patchwork-Id: 931939 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=csie.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 419Y2Z0KnSz9s7F for ; Wed, 20 Jun 2018 15:16:06 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751381AbeFTFQD (ORCPT ); Wed, 20 Jun 2018 01:16:03 -0400 Received: from mirror2.csie.ntu.edu.tw ([140.112.30.76]:32886 "EHLO wens.csie.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750968AbeFTFQC (ORCPT ); Wed, 20 Jun 2018 01:16:02 -0400 Received: by wens.csie.org (Postfix, from userid 1000) id 876795FD13; Wed, 20 Jun 2018 13:15:51 +0800 (CST) From: Chen-Yu Tsai To: Maxime Ripard , Lee Jones , Rob Herring , Mark Rutland Cc: Icenowy Zheng , Andre Przywara , Chen-Yu Tsai , linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org Subject: [PATCH 1/5] dt-bindings: mfd: axp20x: Add "self-working" mode for AXP806 Date: Wed, 20 Jun 2018 13:15:36 +0800 Message-Id: <20180620051540.25617-2-wens@csie.org> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180620051540.25617-1-wens@csie.org> References: <20180620051540.25617-1-wens@csie.org> Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org The AXP806 has three operation modes: - master mode: The PMIC is the first or only AXP PMIC in the system, but is not in charge of power management, i.e. only provides regulator functions. - slave mode: The PMIC is the second AXP PMIC in the system, chained to the first, or master, one. - self-working mode: The PMIC is the only AXP PMIC in the system, and is in charge of power sequencing. The functional differences between these modes can be found in the "Control and Operation" chapter of the AXP806 (in Chinese) and AXP805 (in English) datasheets. These include how the PMIC responds to external signals, whether it takes an external voltage reference or uses its own, and whether the EN/PWRON pin functions as an enable switch or power button. We already support both slave and master mode. This patch adds a property for describing the self-working mode, and reworks the description for the mode properties. Signed-off-by: Chen-Yu Tsai Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/mfd/axp20x.txt | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt index d1762f3b30af..eaaf79c01e1e 100644 --- a/Documentation/devicetree/bindings/mfd/axp20x.txt +++ b/Documentation/devicetree/bindings/mfd/axp20x.txt @@ -45,8 +45,11 @@ Optional properties: board is driving OTG VBus or not. (axp221 / axp223 / axp803/ axp813 only) -- x-powers,master-mode: Boolean (axp806 only). Set this when the PMIC is - wired for master mode. The default is slave mode. +- x-powers,self-working-mode and + x-powers,master-mode: Boolean (axp806 only). Set either of these when the + PMIC is wired for self-working mode or master mode. + If neither is set then slave mode is assumed. + This corresponds to how the MODESET pin is wired. - -supply: a phandle to the regulator supply node. May be omitted if inputs are unregulated, such as using the IPSOUT output