Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752105AbeADHXn (ORCPT + 1 other); Thu, 4 Jan 2018 02:23:43 -0500 Received: from mail-pf0-f196.google.com ([209.85.192.196]:36722 "EHLO mail-pf0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751493AbeADHXl (ORCPT ); Thu, 4 Jan 2018 02:23:41 -0500 X-Google-Smtp-Source: ACJfBot6CtNB0K68Rj3DYsZB1VOA1U/kqlAmToyQB23IfTEKo/Of/bR1QEberf9lixB7cNqROdQxQw== From: Chunyan Zhang To: Mark Brown , Rob Herring Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Ulf Hansson , Chunyan Zhang Subject: [PATCH V2 1/5] bindings: regulator: added support for suspend states Date: Thu, 4 Jan 2018 15:22:44 +0800 Message-Id: <1515050568-23876-2-git-send-email-zhang.chunyan@linaro.org> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1515050568-23876-1-git-send-email-zhang.chunyan@linaro.org> References: <1515050568-23876-1-git-send-email-zhang.chunyan@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Return-Path: Some systems need to set regulators to specific states when they enter low power modes, especially around CPUs. There are many of these modes depending on the particular runtime state. Currently the regulator consumers are not granted permission to change suspend state of regulator devices, the constraints are configured at startup. In order to allow changes in a vlotage range, we need to add new properties for voltage range and a flag to give permission to change the suspend voltage and suspend on/off in suspend mode. Signed-off-by: Chunyan Zhang --- Documentation/devicetree/bindings/regulator/regulator.txt | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/regulator/regulator.txt b/Documentation/devicetree/bindings/regulator/regulator.txt index 378f6dc..532e286 100644 --- a/Documentation/devicetree/bindings/regulator/regulator.txt +++ b/Documentation/devicetree/bindings/regulator/regulator.txt @@ -42,8 +42,19 @@ Optional properties: - regulator-state-[mem/disk] node has following common properties: - regulator-on-in-suspend: regulator should be on in suspend state. - regulator-off-in-suspend: regulator should be off in suspend state. - - regulator-suspend-microvolt: regulator should be set to this voltage - in suspend. + - regulator-suspend-min-microvolt: minimum voltage may be set in + suspend state. + - regulator-suspend-max-microvolt: maximum voltage may be set in + suspend state. + - regulator-suspend-microvolt: the default voltage which regulator + would be set in suspend. The voltage for suspend also can be + adjusted among {regulator-suspend-min-microvolt, + regulator-suspend-max-microvolt} by calling + regulator_set_suspend_voltage(). This property is not deprecated, + setting voltage for suspend mode via API the regulator driver + provides is recommended. + - regulator-changeable-in-suspend: whether the default voltage and + the regulator on/off in suspend can be changed in runtime. - regulator-mode: operating mode in the given suspend state. The set of possible operating modes depends on the capabilities of every hardware so the valid modes are documented on each regulator -- 2.7.4