From patchwork Wed Feb 21 06:58:56 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Rajkumar Rampelli X-Patchwork-Id: 875974 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 3zmT1G3S1jz9s5R for ; Wed, 21 Feb 2018 18:01:38 +1100 (AEDT) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751658AbeBUHAf (ORCPT ); Wed, 21 Feb 2018 02:00:35 -0500 Received: from hqemgate15.nvidia.com ([216.228.121.64]:3255 "EHLO hqemgate15.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751760AbeBUHAc (ORCPT ); Wed, 21 Feb 2018 02:00:32 -0500 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqemgate15.nvidia.com id ; Tue, 20 Feb 2018 23:00:37 -0800 Received: from HQMAIL103.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Tue, 20 Feb 2018 23:00:32 -0800 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Tue, 20 Feb 2018 23:00:32 -0800 Received: from UKMAIL101.nvidia.com (10.26.138.13) by HQMAIL103.nvidia.com (172.20.187.11) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 21 Feb 2018 07:00:31 +0000 Received: from HQMAIL105.nvidia.com (172.20.187.12) by UKMAIL101.nvidia.com (10.26.138.13) with Microsoft SMTP Server (TLS) id 15.0.1347.2; Wed, 21 Feb 2018 07:00:27 +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 07:00:19 +0000 From: Rajkumar Rampelli To: , , , , , , , , , , , , , , , , , , , , , , CC: , , , , , , , , Subject: [PATCH 07/10] arm64: tegra: Add PWM based Tachometer support on Tegra186 Date: Wed, 21 Feb 2018 12:28:56 +0530 Message-ID: <1519196339-9377-8-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 Add PWM based Tachometer support on Tegra186 to measure number of rotations of a Fan per minute by using PWM capture interface Signed-off-by: Rajkumar Rampelli --- arch/arm64/boot/dts/nvidia/tegra186.dtsi | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/arch/arm64/boot/dts/nvidia/tegra186.dtsi b/arch/arm64/boot/dts/nvidia/tegra186.dtsi index 8f2d598..37149e9 100644 --- a/arch/arm64/boot/dts/nvidia/tegra186.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra186.dtsi @@ -1042,4 +1042,10 @@ reset-names = "tachometer"; status = "disabled"; }; + + generic_pwm_tachometer { + compatible = "generic-pwm-tachometer"; + pwms = <&tegra_tachometer 0 1000000>; + status = "disabled"; + }; };