From patchwork Thu Jan 16 10:29:32 2014 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sachin Kamat X-Patchwork-Id: 23261 Return-Path: X-Original-To: linaro@patches.linaro.org Delivered-To: linaro@patches.linaro.org Received: from mail-oa0-f69.google.com (mail-oa0-f69.google.com [209.85.219.69]) by ip-10-151-82-157.ec2.internal (Postfix) with ESMTPS id D341A202E2 for ; Thu, 16 Jan 2014 10:33:54 +0000 (UTC) Received: by mail-oa0-f69.google.com with SMTP id h16sf7095901oag.4 for ; Thu, 16 Jan 2014 02:33:54 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:delivered-to:from:to:cc:subject :date:message-id:sender:precedence:list-id:x-original-sender :x-original-authentication-results:mailing-list:list-post:list-help :list-archive:list-unsubscribe; bh=ez2e3K9r2w3W4mKgLpzBLUo+Ia+fDXYngx0QUKsgWDk=; b=FGv+3yYmc/+fNcDPb+WgT9LeWY/l4AX+ZKjLQh6+fmgfMHrWkbGkqWiMvjTd6+mCpi sY8INRHPMVOlCMGu0LYo1TqgI7e5FpSM00dzf5DHrUNN/hZiolXgkqE6bsJYPuTcvUJk he44GX7hNmBp3otjxWzfD3QrSUaYuKLmdGpUr0sxirKxvJZDldxkICGaU+iRpxoSiIX/ pmMkAETiyFVRRgPXDSVD6pe9DHV/BoSLnQh87Wl+iRva62/RcwlFjnwu9PMHhB1+2L2a 8OHcAWUk/sjmYVwwPEG1WyYw6HKCCSlbXlUNjFDfIPHLsjLu6uYwWZayH4DVVdVr7Jn4 osAw== X-Gm-Message-State: ALoCoQmGbVJxUwdmgo/DJUnwkhjF88t7w7s4tWnbTRxerouWTcrUt/Dw4gXoG7xCZ2IS6P2Fqm8s X-Received: by 10.43.135.4 with SMTP id ie4mr2583991icc.1.1389868433972; Thu, 16 Jan 2014 02:33:53 -0800 (PST) MIME-Version: 1.0 X-BeenThere: patchwork-forward@linaro.org Received: by 10.140.100.173 with SMTP id s42ls146482qge.8.gmail; Thu, 16 Jan 2014 02:33:53 -0800 (PST) X-Received: by 10.58.75.6 with SMTP id y6mr1905465vev.23.1389868433902; Thu, 16 Jan 2014 02:33:53 -0800 (PST) Received: from mail-vb0-f53.google.com (mail-vb0-f53.google.com [209.85.212.53]) by mx.google.com with ESMTPS id pu5si3157788veb.59.2014.01.16.02.33.53 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 16 Jan 2014 02:33:53 -0800 (PST) Received-SPF: neutral (google.com: 209.85.212.53 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) client-ip=209.85.212.53; Received: by mail-vb0-f53.google.com with SMTP id p17so903017vbe.12 for ; Thu, 16 Jan 2014 02:33:53 -0800 (PST) X-Received: by 10.58.100.197 with SMTP id fa5mr1922608veb.24.1389868433799; Thu, 16 Jan 2014 02:33:53 -0800 (PST) X-Forwarded-To: patchwork-forward@linaro.org X-Forwarded-For: patch@linaro.org patchwork-forward@linaro.org Delivered-To: patch@linaro.org Received: by 10.59.13.131 with SMTP id ey3csp336708ved; Thu, 16 Jan 2014 02:33:53 -0800 (PST) X-Received: by 10.66.142.233 with SMTP id rz9mr9016113pab.71.1389868432780; Thu, 16 Jan 2014 02:33:52 -0800 (PST) Received: from vger.kernel.org (vger.kernel.org. [209.132.180.67]) by mx.google.com with ESMTP id yd9si6611245pab.292.2014.01.16.02.33.52; Thu, 16 Jan 2014 02:33:52 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of devicetree-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751714AbaAPKdv (ORCPT + 9 others); Thu, 16 Jan 2014 05:33:51 -0500 Received: from mail-pb0-f49.google.com ([209.85.160.49]:56412 "EHLO mail-pb0-f49.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751628AbaAPKds (ORCPT ); Thu, 16 Jan 2014 05:33:48 -0500 Received: by mail-pb0-f49.google.com with SMTP id up15so1957517pbc.36 for ; Thu, 16 Jan 2014 02:33:47 -0800 (PST) X-Received: by 10.68.136.66 with SMTP id py2mr8946312pbb.112.1389868427650; Thu, 16 Jan 2014 02:33:47 -0800 (PST) Received: from linaro.sisodomain.com ([115.113.119.130]) by mx.google.com with ESMTPSA id yd4sm14174733pbc.13.2014.01.16.02.33.44 for (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 16 Jan 2014 02:33:47 -0800 (PST) From: Sachin Kamat To: devicetree@vger.kernel.org Cc: mark.rutland@arm.com, sachin.kamat@linaro.org, lee.jones@linaro.org Subject: [PATCH v2 Resend] Documentation: mfd: Add binding document for S2MPA01 Date: Thu, 16 Jan 2014 15:59:32 +0530 Message-Id: <1389868172-11460-1-git-send-email-sachin.kamat@linaro.org> X-Mailer: git-send-email 1.7.9.5 Sender: devicetree-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: devicetree@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: sachin.kamat@linaro.org X-Original-Authentication-Results: mx.google.com; spf=neutral (google.com: 209.85.212.53 is neither permitted nor denied by best guess record for domain of patch+caf_=patchwork-forward=linaro.org@linaro.org) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , Added initial binding documentation for S2MPA01 MFD. Signed-off-by: Sachin Kamat --- * Re-organised as suggested by Mark Rutland. --- Documentation/devicetree/bindings/mfd/s2mpa01.txt | 86 +++++++++++++++++++++ 1 file changed, 86 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/s2mpa01.txt diff --git a/Documentation/devicetree/bindings/mfd/s2mpa01.txt b/Documentation/devicetree/bindings/mfd/s2mpa01.txt new file mode 100644 index 000000000000..70879b92b24b --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/s2mpa01.txt @@ -0,0 +1,86 @@ + +* Samsung S2MPA01 Voltage and Current Regulator + +The Samsung S2MPA01 is a multi-function device which includes high +efficiency buck converters including Dual-Phase buck converter, various LDOs, +and an RTC. It is interfaced to the host controller using an I2C interface. +Each sub-block is addressed by the host system using different I2C slave +addresses. + +Required properties: +- compatible: Should be "samsung,s2mpa01-pmic". +- reg: Specifies the I2C slave address of the PMIC block. It should be 0x66. + +Optional properties: +- interrupt-parent: Specifies the phandle of the interrupt controller to which + the interrupts from s2mpa01 are delivered to. +- interrupts: Interrupt specifier for interrupt source (connected to SoC). + +Optional nodes: +- regulators: The regulators of s2mpa01 that have to be instantiated should be + included in a sub-node named 'regulators'. Regulator nodes and constraints + included in this sub-node use the standard regulator bindings which are + documented elsewhere. + +Properties for BUCK regulator nodes: + regulator-ramp-delay for BUCKs = [6250/12500(default)/25000/50000] uV/us + + BUCK[1/2/3/4] supports disabling ramp delay on hardware, so explictly + regulator-ramp-delay = <0> can be used for them to disable ramp delay. + In the absence of the regulator-ramp-delay property, the default ramp + delay will be used. + + NOTE: Some BUCKs share the ramp rate setting i.e. same ramp value will be set + for a particular group of BUCKs. So provide same regulator-ramp-delay. + Grouping of BUCKs sharing ramp rate setting is as follow : BUCK[1, 6], + BUCK[2, 4], and BUCK[8, 9, 10] + +The following are the names of the regulators that the s2mpa01 PMIC block +supports. Note: The 'n' in LDOn and BUCKn represents the LDO or BUCK number +as per the datasheet of s2mpa01. + + - LDOn + - valid values for n are 1 to 26 + - Example: LDO1, LD02, LDO26 + - BUCKn + - valid values for n are 1 to 10. + - Example: BUCK1, BUCK2, BUCK9 + +Example: + + s2mpa01_pmic@66 { + compatible = "samsung,s2mpa01-pmic"; + reg = <0x66>; + + regulators { + ldo1_reg: LDO1 { + regulator-name = "VDD_ALIVE"; + regulator-min-microvolt = <1000000>; + regulator-max-microvolt = <1000000>; + }; + + ldo2_reg: LDO2 { + regulator-name = "VDDQ_MMC2"; + regulator-min-microvolt = <2800000>; + regulator-max-microvolt = <2800000>; + regulator-always-on; + }; + + buck1_reg: BUCK1 { + regulator-name = "vdd_mif"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1350000>; + regulator-always-on; + regulator-boot-on; + }; + + buck2_reg: BUCK2 { + regulator-name = "vdd_arm"; + regulator-min-microvolt = <950000>; + regulator-max-microvolt = <1350000>; + regulator-always-on; + regulator-boot-on; + regulator-ramp-delay = <50000>; + }; + }; + };