From patchwork Mon Apr 13 21:58:00 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 6212081 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: X-Original-To: patchwork-linux-arm-msm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 4AB859F313 for ; Mon, 13 Apr 2015 21:58:36 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 55E48202E6 for ; Mon, 13 Apr 2015 21:58:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 1A3B2200FF for ; Mon, 13 Apr 2015 21:58:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754807AbbDMV6P (ORCPT ); Mon, 13 Apr 2015 17:58:15 -0400 Received: from seldrel01.sonyericsson.com ([212.209.106.2]:15007 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751895AbbDMV6L (ORCPT ); Mon, 13 Apr 2015 17:58:11 -0400 From: Bjorn Andersson To: Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , Andy Gross CC: , , Subject: [PATCH 1/3] mfd: devicetree: bindings: Add Qualcomm SMD based RPM DT binding Date: Mon, 13 Apr 2015 14:58:00 -0700 Message-ID: <1428962282-32430-2-git-send-email-bjorn.andersson@sonymobile.com> X-Mailer: git-send-email 1.8.2.2 In-Reply-To: <1428962282-32430-1-git-send-email-bjorn.andersson@sonymobile.com> References: <1428962282-32430-1-git-send-email-bjorn.andersson@sonymobile.com> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_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 Add binding documentation for the Qualcomm Resource Power Manager (RPM) using shared memory (Qualcomm SMD) as transport mechanism. This is found in 8974 and newer based devices. The binding currently describes the rpm itself and the regulator subnodes. Signed-off-by: Bjorn Andersson --- .../devicetree/bindings/mfd/qcom-rpm-smd.txt | 136 +++++++++++++++++++++ 1 file changed, 136 insertions(+) create mode 100644 Documentation/devicetree/bindings/mfd/qcom-rpm-smd.txt diff --git a/Documentation/devicetree/bindings/mfd/qcom-rpm-smd.txt b/Documentation/devicetree/bindings/mfd/qcom-rpm-smd.txt new file mode 100644 index 0000000..65e5539 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/qcom-rpm-smd.txt @@ -0,0 +1,136 @@ +Qualcomm Resource Power Manager (RPM) over SMD + +This driver is used to interface with the Resource Power Manager (RPM) found in +various Qualcomm platforms. The RPM allows each component in the system to vote +for state of the system resources, such as clocks, regulators and bus +frequencies. + +- compatible: + Usage: required + Value type: + Definition: must be one of: + "qcom,rpm-msm8974" + +- qcom,smd-channels: + Usage: required + Value type: + Definition: Shared Memory channel used for communication with the RPM + += SUBDEVICES + +The RPM exposes resources to its subnodes. The below bindings specify the set +of valid subnodes that can operate on these resources. + +== Regulators + +Regulator nodes are identified by their compatible: + +- compatible: + Usage: required + Value type: + Definition: must be one of: + "qcom,rpm-pm8841-regulators" + "qcom,rpm-pm8941-regulators" + +- vdd_s1-supply: +- vdd_s2-supply: +- vdd_s3-supply: +- vdd_s4-supply: +- vdd_s5-supply: +- vdd_s6-supply: +- vdd_s7-supply: +- vdd_s8-supply: + Usage: optional (pm8841 only) + Value type: + Definition: reference to regulator supplying the input pin, as + described in the data sheet + +- vdd_s1-supply: +- vdd_s2-supply: +- vdd_s3-supply: +- vdd_l1_l3-supply: +- vdd_l2_lvs1_2_3-supply: +- vdd_l1_l3-supply: +- vdd_l4_l11-supply: +- vdd_l5_l7-supply: +- vdd_l6_l12_l14_l15-supply: +- vdd_l5_l7-supply: +- vdd_l8_l16_l18_l19-supply: +- vdd_l9_l10_l17_l22-supply: +- vdd_l9_l10_l17_l22-supply: +- vdd_l4_l11-supply: +- vdd_l6_l12_l14_l15-supply: +- vdd_l13_l20_l23_l24-supply: +- vdd_l6_l12_l14_l15-supply: +- vdd_l6_l12_l14_l15-supply: +- vdd_l8_l16_l18_l19-supply: +- vdd_l9_l10_l17_l22-supply: +- vdd_l8_l16_l18_l19-supply: +- vdd_l8_l16_l18_l19-supply: +- vdd_l13_l20_l23_l24-supply: +- vdd_l21-supply: +- vdd_l9_l10_l17_l22-supply: +- vdd_l13_l20_l23_l24-supply: +- vdd_l13_l20_l23_l24-supply: +- vdd_l2_lvs1_2_3-supply: +- vdd_l2_lvs1_2_3-supply: +- vdd_l2_lvs1_2_3-supply: +- vin_5vs-supply: +- vin_5vs-supply: + Usage: optional (pm8941 only) + Value type: + Definition: reference to regulator supplying the input pin, as + described in the data sheet + +The regulator node houses sub-nodes for each regulator within the device. Each +sub-node is identified using the node's name, with valid values listed for each +of the pmics below. + +pm8841: + s1, s2, s3, s4, s5, s6, s7, s8 + +pm8941: + s1, s2, s3, s4, l1, l2, l3, l4, l5, l6, l7, l8, l9, l10, l11, l12, l13, + l14, l15, l16, l17, l18, l19, l20, l21, l22, l23, l24, lvs1, lvs2, + lvs3, 5vs1, 5vs2 + +The content of each sub-node is defined by the standard binding for regulators - +see regulator.txt. + += EXAMPLE + + smd { + compatible = "qcom,smd"; + + rpm { + interrupts = <0 168 1>; + qcom,ipc = <&apcs 8 0>; + qcom,smd-edge = <15>; + + rpm_requests { + compatible = "qcom,rpm-msm8974"; + qcom,smd-channels = "rpm_requests"; + + pm8941-regulators { + compatible = "qcom,rpm-pm8941-regulators"; + vdd_l13_l20_l23_l24-supply = <&pm8941_boost>; + + pm8941_s3: s3 { + regulator-min-microvolt = <1800000>; + regulator-max-microvolt = <1800000>; + }; + + pm8941_boost: s4 { + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + }; + + pm8941_l20: l20 { + regulator-min-microvolt = <2950000>; + regulator-max-microvolt = <2950000>; + }; + }; + }; + }; + }; +