From patchwork Mon Oct 20 20:33:14 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Bruno_Pr=C3=A9mont?= X-Patchwork-Id: 401251 Return-Path: X-Original-To: incoming-imx@patchwork.ozlabs.org Delivered-To: patchwork-incoming-imx@bilbo.ozlabs.org Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2001:1868:205::9]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 5630A140085 for ; Tue, 21 Oct 2014 07:38:30 +1100 (AEDT) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1XgJgD-0007J1-KR; Mon, 20 Oct 2014 20:35:49 +0000 Received: from hygieia.santi-shop.eu ([2a01:4f8:d13:3b02::2]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1XgJfx-0007FA-At for linux-arm-kernel@lists.infradead.org; Mon, 20 Oct 2014 20:35:34 +0000 Received: from neptune.home (unknown [IPv6:2001:960:7ab:0:2c0:9fff:fe2d:39d]) by smtp.sysophe.eu (Postfix) with ESMTPSA id 5E92D481A207; Mon, 20 Oct 2014 22:35:06 +0200 (CEST) Date: Mon, 20 Oct 2014 22:33:14 +0200 From: Bruno =?UTF-8?B?UHLDqW1vbnQ=?= To: linux-sunxi@googlegroups.com, maxime.ripard@free-electrons.com, linux-arm-kernel@lists.infradead.org, lee.jones@linaro.org, Sebastian Reichel , Dmitry Eremin-Solenikov , David Woodhouse , linux-pm@vger.kernel.org Subject: [RFC Patch 1/4] mfd: AXP20x: Add power supply bindings documentation Message-ID: <20141020223314.0484f795@neptune.home> In-Reply-To: <20141020215954.7f1d5502@neptune.home> References: <20141020215954.7f1d5502@neptune.home> X-Mailer: Claws Mail 3.10.1 (GTK+ 2.24.24; i686-pc-linux-gnu) References: <20141020221959.2f312906@neptune.home> In-Reply-To: <20141020221959.2f312906@neptune.home> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20141020_133533_558335_48016972 X-CRM114-Status: GOOD ( 11.55 ) X-Spam-Score: -1.6 (-) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-1.6 points) pts rule name description ---- ---------------------- -------------------------------------------------- -2.3 RCVD_IN_DNSWL_MED RBL: Sender listed at http://www.dnswl.org/, medium trust [2a01:4f8:d13:3b02:0:0:0:2 listed in] [list.dnswl.org] 0.7 SPF_NEUTRAL SPF: sender does not match SPF record (neutral) Cc: Olliver Schinagl X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+incoming-imx=patchwork.ozlabs.org@lists.infradead.org List-Id: linux-imx-kernel.lists.patchwork.ozlabs.org --- Note: the OCV values seem to have some defaults build into the PMIC though may need adjustment if the used battery has a different open circuit voltage curve. As far as understood (these values are set in vendor driver but not mentioned in chip documentation) they represent charge percentage for some predefined voltages. If prefixing these values with "x-power," is preferred the following patch should becomes a dependency: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-June/267606.html and users in patch 2/4, 4/4 need adjusting. Documentation/devicetree/bindings/mfd/axp20x.txt | 20 + 1 files changed, 20 insertions(+), 0 deletion(-) diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt index cc9e01b..8ea681c 100644 --- a/Documentation/devicetree/bindings/mfd/axp20x.txt +++ b/Documentation/devicetree/bindings/mfd/axp20x.txt @@ -28,6 +28,20 @@ Required properties: (range: 750-1875). Default: 1.5MHz Optional properties for DCDCs: +- backup: Settings for backup/RTC battery charger + (Voltage in µV, current in µA) + If not present, charger will be left untouched +- battery.ocv: OCV capacity curve points (16 data values) +- battery.resistance: internal battery resistance in mΩ + (defaults to 100mΩ) +- battery.capacity: Battery capacity in mAh + If this attribute is missing, charger will be disabled + unless there is a battery connected. +- battery.temp_sensor: Description of temperautre sensor, 3 values + - driver current (20µA, 40µA, 60µA or 80µA) + - low temperature warning level (in µV) + - high temperature warning level (in µV) + If missing, temperature sensor gets disabled - x-powers,dcdc-workmode: 1 for PWM mode, 0 for AUTO mode Default: AUTO mode @@ -49,6 +63,12 @@ axp209: pmic@34 { ldo3in-supply = <&axp_ipsout_reg>; ldo5in-supply = <&axp_ipsout_reg>; + backup = <3000000 200>; + battery.ocv = <0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0>; + battery.resistance = <0>; + battery.capacity = <2000>; + battery.temp_sensor = <20 1000000 4000000>; + regulators { x-powers,dcdc-freq = <1500>;