From patchwork Wed Feb 21 06:58:51 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajkumar Rampelli X-Patchwork-Id: 875980 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@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=linux-pwm-owner@vger.kernel.org; receiver=) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 3zmT1n08X2z9ry2 for ; Wed, 21 Feb 2018 18:02:05 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751587AbeBUG7m (ORCPT ); Wed, 21 Feb 2018 01:59:42 -0500 Received: from hqemgate14.nvidia.com ([216.228.121.143]:16239 "EHLO hqemgate14.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751565AbeBUG7j (ORCPT ); Wed, 21 Feb 2018 01:59:39 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate14.nvidia.com id ; Tue, 20 Feb 2018 22:59:44 -0800 Received: from HQMAIL107.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 20 Feb 2018 22:59:38 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 20 Feb 2018 22:59:38 -0800 Received: from UKMAIL102.nvidia.com (10.26.138.15) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 21 Feb 2018 06:59:37 +0000 Received: from HQMAIL105.nvidia.com (172.20.187.12) by UKMAIL102.nvidia.com (10.26.138.15) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 21 Feb 2018 06:59:33 +0000 Received: from rrajk-ubuntu.nvidia.com (10.124.1.5) by HQMAIL105.nvidia.com (172.20.187.12) with Microsoft SMTP Server (TLS) id 15.0.1347.2 via Frontend Transport; Wed, 21 Feb 2018 06:59:25 +0000 From: Rajkumar Rampelli To: , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , Subject: [PATCH 02/10] dt-bindings: Tegra186 tachometer device tree bindings Date: Wed, 21 Feb 2018 12:28:51 +0530 Message-ID: <1519196339-9377-3-git-send-email-rrajk@nvidia.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1519196339-9377-1-git-send-email-rrajk@nvidia.com> References: <1519196339-9377-1-git-send-email-rrajk@nvidia.com> MIME-Version: 1.0 Sender: linux-pwm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pwm@vger.kernel.org Supply Device tree binding documentation for the NVIDIA Tegra186 SoC's Tachometer Controller Signed-off-by: Rajkumar Rampelli --- .../bindings/pwm/pwm-tegra-tachometer.txt | 31 ++++++++++++++++++++++ 1 file changed, 31 insertions(+) create mode 100644 Documentation/devicetree/bindings/pwm/pwm-tegra-tachometer.txt diff --git a/Documentation/devicetree/bindings/pwm/pwm-tegra-tachometer.txt b/Documentation/devicetree/bindings/pwm/pwm-tegra-tachometer.txt new file mode 100644 index 0000000..4a7ead4 --- /dev/null +++ b/Documentation/devicetree/bindings/pwm/pwm-tegra-tachometer.txt @@ -0,0 +1,31 @@ +Bindings for a PWM based Tachometer driver + +Required properties: +- compatible: Must be "nvidia,tegra186-pwm-tachometer" +- reg: physical base addresses of the controller and length of + memory mapped region. +- #pwm-cells: should be 2. See pwm.txt in this directory for a + description of the cells format. +- clocks: phandle list of tachometer clocks +- clock-names: should be "tachometer". See clock-bindings.txt in documentations +- resets: phandle to the reset controller for the Tachometer IP +- reset-names: should be "tachometer". See reset.txt in documentations +- nvidia,pulse-per-rev: Integer, pulses per revolution of a Fan. This value + obtained from Fan specification document. +- nvidia,capture-window-len: Integer, window of the Fan Tach monitor, it indicates + that how many period of the input fan tach signal will the FAN TACH logic + monitor. Valid values are 1, 2, 4 and 8 only. + +Example: + tegra_tachometer: tachometer@39c0000 { + compatible = "nvidia,tegra186-pwm-tachometer"; + reg = <0x0 0x039c0000 0x0 0x10>; + #pwm-cells = <2>; + clocks = <&tegra_car TEGRA186_CLK_TACH>; + clock-names = "tachometer"; + resets = <&tegra_car TEGRA186_RESET_TACH>; + reset-names = "tachometer"; + nvidia,pulse-per-rev = <2>; + nvidia,capture-window-len = <2>; + status = "disabled"; + };