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: 912924 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (1024-bit key; unprotected) header.d=codeaurora.org header.i=@codeaurora.org header.b="RQMmt2Em"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=codeaurora.org header.i=@codeaurora.org header.b="ntL/tSMU"; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 40l1QW3p0Yz9ryk for ; Mon, 14 May 2018 23:15:15 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932350AbeENNNN (ORCPT ); Mon, 14 May 2018 09:13:13 -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= X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on pdx-caf-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=2.0 tests=ALL_TRUSTED,BAYES_00, DKIM_SIGNED, T_DKIM_INVALID autolearn=no autolearn_force=no version=3.4.0 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: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 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>; + }; + };