From patchwork Mon Oct 20 14:47:50 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 5106331 Return-Path: X-Original-To: patchwork-linux-samsung-soc@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id 72FE0C11AC for ; Mon, 20 Oct 2014 14:49:41 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 8BD4320148 for ; Mon, 20 Oct 2014 14:49:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F0DB2012E for ; Mon, 20 Oct 2014 14:49:39 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752644AbaJTOsn (ORCPT ); Mon, 20 Oct 2014 10:48:43 -0400 Received: from bhuna.collabora.co.uk ([93.93.135.160]:39911 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751749AbaJTOsj (ORCPT ); Mon, 20 Oct 2014 10:48:39 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: javier) with ESMTPSA id B44BB600B6B From: Javier Martinez Canillas To: Mark Brown Cc: Chanwoo Choi , Olof Johansson , Chris Zhong , Krzysztof Kozlowski , Abhilash Kesavan , linux-samsung-soc@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, Javier Martinez Canillas Subject: [PATCH v3 3/5] regulator: max77802: Document regulator operating modes Date: Mon, 20 Oct 2014 16:47:50 +0200 Message-Id: <1413816472-1895-4-git-send-email-javier.martinez@collabora.co.uk> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1413816472-1895-1-git-send-email-javier.martinez@collabora.co.uk> References: <1413816472-1895-1-git-send-email-javier.martinez@collabora.co.uk> Sender: linux-samsung-soc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org X-Spam-Status: No, score=-8.3 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 Some regulators from the max77802 PMIC support to be configured in one of two operating mode: Output ON (normal) and Output On Low Power Mode. Not all regulators support these two modes and for some of them, the mode can be changed while the system is running in normal operation while others only support their mode to be changed on system suspend. Extend the max77802 PMIC binding, documenting the possible operating modes values so the regulators modes can be correctly configured. Signed-off-by: Javier Martinez Canillas --- Changes since v2: - Use the standard suspend states bindings as suggested by Mark Brown. .../devicetree/bindings/regulator/max77802.txt | 33 ++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/max77802.txt b/Documentation/devicetree/bindings/regulator/max77802.txt index 5aeaffc..f265319 100644 --- a/Documentation/devicetree/bindings/regulator/max77802.txt +++ b/Documentation/devicetree/bindings/regulator/max77802.txt @@ -25,6 +25,27 @@ with their hardware counterparts as follow. The valid names are: example: LDO1, LDO2, LDO35. -BUCKn : for BUCKs, where n can lie in range 1 to 10. example: BUCK1, BUCK5, BUCK10. + +The max77802 regulator supports two different operating modes: Normal and Low +Power Mode. Some regulators support the modes to be changed at startup or by +the consumers during normal operation while others only support to change the +mode during system suspend. The standard regulator suspend states binding can +be used to configure the regulator operating mode. + +The regulators that support the standard "regulator-initial-mode" property, +changing their mode during normal operation are: LDOs 1, 3, 20 and 21. + +The possible values for "regulator-initial-mode" and "regulator-mode" are: + 1: Normal regulator voltage output mode. + 3: Low Power which reduces the quiescent current down to only 1uA + +The list of valid modes are defined in the dt-bindings/regulator/regulator.h +header and can be included by device tree source files. + +The standard "regulator-mode" property can only be used for regulators that +support changing their mode to Low Power Mode during suspend. These regulators +are: BUCKs 2-4 and LDOs 1-35. + Example: max77802@09 { @@ -36,11 +57,23 @@ Example: #size-cells = <0>; regulators { + ldo1_reg: LDO1 { + regulator-name = "vdd_1v0"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + regulator-always-on; + regulator-initial-mode = ; + }; + ldo11_reg: LDO11 { regulator-name = "vdd_ldo11"; regulator-min-microvolt = <1900000>; regulator-max-microvolt = <1900000>; regulator-always-on; + regulator-state-mem { + regulator-on-in-suspend; + regulator-mode = ; + }; }; buck1_reg: BUCK1 {