From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751956AbeCNLJF (ORCPT ); Wed, 14 Mar 2018 07:09:05 -0400 Received: from andre.telenet-ops.be ([195.130.132.53]:49394 "EHLO andre.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751612AbeCNLI5 (ORCPT ); Wed, 14 Mar 2018 07:08:57 -0400 From: Geert Uytterhoeven To: Marek Vasut , Lee Jones , Rob Herring , Mark Rutland , Liam Girdwood , Mark Brown Cc: linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH v2 1/4] dt-bindings: mfd: bd9571mwv: Document DDR Backup Mode properties Date: Wed, 14 Mar 2018 12:08:39 +0100 Message-Id: <1521025722-24205-2-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1521025722-24205-1-git-send-email-geert+renesas@glider.be> References: <1521025722-24205-1-git-send-email-geert+renesas@glider.be> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Document the new optional properties related to DDR Backup Mode and toggle/momentary power switches. Signed-off-by: Geert Uytterhoeven --- v2: - Improve property description, - Add properties for power switch type. --- Documentation/devicetree/bindings/mfd/bd9571mwv.txt | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/Documentation/devicetree/bindings/mfd/bd9571mwv.txt b/Documentation/devicetree/bindings/mfd/bd9571mwv.txt index 9ab216a851d5619b..8804a214759845c5 100644 --- a/Documentation/devicetree/bindings/mfd/bd9571mwv.txt +++ b/Documentation/devicetree/bindings/mfd/bd9571mwv.txt @@ -25,6 +25,25 @@ Required properties: Each child node is defined using the standard binding for regulators. +Optional properties: + - rohm,ddr-backup-power : Value to use for DDR-Backup Power (default 0). + This is a bitmask that specifies which DDR power + rails need to be kept powered when backup mode is + entered, for system suspend: + - bit 0: DDR0 + - bit 1: DDR1 + - bit 2: DDR0C + - bit 3: DDR1C + These bits match the KEEPON_DDR* bits in the + documentation for the "BKUP Mode Cnt" register. + - rohm,rstbmode-level: The RSTB signal is configured for level mode, to + accommodate a toggle power switch (the RSTBMODE pin is + strapped low). + - rohm,rstbmode-pulse: The RSTB signal is configured for pulse mode, to + accommodate a momentary power switch (the RSTBMODE pin + is strapped high). + The two properties above are mutually exclusive. + Example: pmic: pmic@30 { @@ -36,6 +55,8 @@ Example: #interrupt-cells = <2>; gpio-controller; #gpio-cells = <2>; + rohm,ddr-backup-power = <15>; + rohm,rstbmode-pulse; regulators { dvfs: dvfs { -- 2.7.4