From patchwork Mon May 14 13:11:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ilia Lin X-Patchwork-Id: 10398349 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AB33460536 for ; Mon, 14 May 2018 13:15:05 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8DFA928FDE for ; Mon, 14 May 2018 13:15:05 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 8181F29044; Mon, 14 May 2018 13:15:05 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI, T_DKIM_INVALID autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 3053728FDE for ; Mon, 14 May 2018 13:15:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932366AbeENNNO (ORCPT ); Mon, 14 May 2018 09:13:14 -0400 Received: from smtp.codeaurora.org ([198.145.29.96]:45756 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932330AbeENNNH (ORCPT ); Mon, 14 May 2018 09:13:07 -0400 Received: by smtp.codeaurora.org (Postfix, from userid 1000) id AAE1360F6D; Mon, 14 May 2018 13:13:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1526303586; bh=aMD93QXfgCcPGMxAgbMB+GacslVTPajrIypC09hNUhc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RQMmt2EmT8/KRqYT/hqiS9Nn36csECNXYzX5P9SoAjIN8sPAwRK3Vp7i+T2njQs8W /AULHOq4GK6Cb4yeTZcngL+fe3+vjRLFcpzTpwmo1jHHdJir29IsKTMzf+RqPlU4kD 9iBi5XSGxYm/Pt5yGEqLgbD5DLThzNEJjILoZ8zA= Received: from lx-ilial.mea.qualcomm.com (unknown [185.23.60.4]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: ilialin@smtp.codeaurora.org) by smtp.codeaurora.org (Postfix) with ESMTPSA id 744256047C; Mon, 14 May 2018 13:13:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=codeaurora.org; s=default; t=1526303585; bh=aMD93QXfgCcPGMxAgbMB+GacslVTPajrIypC09hNUhc=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ntL/tSMUv2rV8W9I+UbKic+PtRvUaNVRFBDm0Wibb1Hi1YRzwMaMtgELoAhm3xyiv Q4fLmiXV9W17BECbakkCRzbCNoceQ3YfaEf7GSArEGp4OG3BhS9e7JZf0/welrakpu Fq928QJmhC+iPtNgqmckJ8SN0hF4z1Dxb7P8EyaM= DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 744256047C Authentication-Results: pdx-caf-mail.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: pdx-caf-mail.web.codeaurora.org; spf=none smtp.mailfrom=ilialin@codeaurora.org From: Ilia Lin To: mturquette@baylibre.com, sboyd@kernel.org, robh@kernel.org, mark.rutland@arm.com, viresh.kumar@linaro.org, nm@ti.com, lgirdwood@gmail.com, broonie@kernel.org, andy.gross@linaro.org, david.brown@linaro.org, catalin.marinas@arm.com, will.deacon@arm.com, rjw@rjwysocki.net, linux-clk@vger.kernel.org Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, rnayak@codeaurora.org, ilialin@codeaurora.org, amit.kucheria@linaro.org, nicolas.dechesne@linaro.org, celster@codeaurora.org, tfinkel@codeaurora.org Subject: [PATCH v6 10/14] dt-bindings: qcom_spmi: Add support for SAW documentation Date: Mon, 14 May 2018 16:11:56 +0300 Message-Id: <1526303520-5843-11-git-send-email-ilialin@codeaurora.org> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1526303520-5843-1-git-send-email-ilialin@codeaurora.org> References: <1526303520-5843-1-git-send-email-ilialin@codeaurora.org> Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for SAW controlled regulators. The regulators defined as SAW controlled in the device tree will be controlled through special CPU registers instead of direct SPMI accesses. This is required especially for CPU supply regulators to synchronize with clock scaling and for Automatic Voltage Switching. Document it. Signed-off-by: Ilia Lin Reviewed-by: Rob Herring --- .../bindings/regulator/qcom,spmi-regulator.txt | 45 ++++++++++++++++++++++ 1 file changed, 45 insertions(+) diff --git a/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt b/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt index 57d2c65..406f2e5 100644 --- a/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt +++ b/Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt @@ -110,6 +110,11 @@ Qualcomm SPMI Regulators Definition: Reference to regulator supplying the input pin, as described in the data sheet. +- qcom,saw-reg: + Usage: optional + Value type: + Description: Reference to syscon node defining the SAW registers. + 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 @@ -201,6 +206,17 @@ see regulator.txt - with additional custom properties described below: 2 = 0.55 uA 3 = 0.75 uA +- qcom,saw-slave: + Usage: optional + Value type: + Description: SAW controlled gang slave. Will not be configured. + +- qcom,saw-leader: + Usage: optional + Value type: + Description: SAW controlled gang leader. Will be configured as + SAW regulator. + Example: regulators { @@ -221,3 +237,32 @@ Example: .... }; + +Example 2: + + saw3: syscon@9A10000 { + compatible = "syscon"; + reg = <0x9A10000 0x1000>; + }; + + ... + + spm-regulators { + compatible = "qcom,pm8994-regulators"; + qcom,saw-reg = <&saw3>; + s8 { + qcom,saw-slave; + }; + s9 { + qcom,saw-slave; + }; + s10 { + qcom,saw-slave; + }; + pm8994_s11_saw: s11 { + qcom,saw-leader; + regulator-always-on; + regulator-min-microvolt = <900000>; + regulator-max-microvolt = <1140000>; + }; + };