From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.4 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_SANE_1 autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id B13BDC352A4 for ; Fri, 7 Feb 2020 11:27:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 88B7E217BA for ; Fri, 7 Feb 2020 11:27:05 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=nvidia.com header.i=@nvidia.com header.b="adEPHWCQ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727162AbgBGL1F (ORCPT ); Fri, 7 Feb 2020 06:27:05 -0500 Received: from hqnvemgate24.nvidia.com ([216.228.121.143]:10701 "EHLO hqnvemgate24.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726798AbgBGL1E (ORCPT ); Fri, 7 Feb 2020 06:27:04 -0500 Received: from hqpgpgate102.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate24.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Fri, 07 Feb 2020 03:26:04 -0800 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate102.nvidia.com (PGP Universal service); Fri, 07 Feb 2020 03:27:03 -0800 X-PGP-Universal: processed; by hqpgpgate102.nvidia.com on Fri, 07 Feb 2020 03:27:03 -0800 Received: from [10.24.44.92] (10.124.1.5) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 7 Feb 2020 11:26:58 +0000 CC: , , , , , , , , , , , , , , , , , Subject: Re: [PATCH v2 6/9] ASoC: tegra: add Tegra186 based DSPK driver To: Dmitry Osipenko References: <1580380422-3431-1-git-send-email-spujar@nvidia.com> <1580380422-3431-7-git-send-email-spujar@nvidia.com> From: Sameer Pujar Message-ID: <75a63cb3-7d79-7216-6791-3cec57464cd9@nvidia.com> Date: Fri, 7 Feb 2020 16:56:55 +0530 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.4.2 MIME-Version: 1.0 In-Reply-To: X-Originating-IP: [10.124.1.5] X-ClientProxiedBy: HQMAIL105.nvidia.com (172.20.187.12) To HQMAIL107.nvidia.com (172.20.187.13) Content-Type: text/plain; charset="utf-8"; format=flowed Content-Transfer-Encoding: quoted-printable Content-Language: en-GB DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1581074764; bh=sPdWryWKJk0iFeTBRAv4usVTECIW90wGdKR2dRVs5Ls=; h=X-PGP-Universal:CC:Subject:To:References:From:Message-ID:Date: User-Agent:MIME-Version:In-Reply-To:X-Originating-IP: X-ClientProxiedBy:Content-Type:Content-Transfer-Encoding: Content-Language; b=adEPHWCQLjLn5KSgN4/Lhk8p/Xa5qi569C1pqz+YoOhsWkbsy01TkBWj1VWVL9FWs plAhgjkZ6TRYoVek+188rx05XSwg2AID/MH5ZUR+cJ9rGDm6FMTNB4+R6foQgW7TkR MUu4wpv3R1j+y3piXG3or9cAh7dm4qHZ6mhNDi7GhHGb+jBo9YZW2R/0wPT7zQInB8 XqZT6HHFDdUhIWlDZC1qLXRrSgmKKP4rwhoJDvZjIlqbhOBUdptvf2xKseffbIiuow aitnPI2TE7t7xMV31w73COu7X4Tt3kpVobbs/Ox1EMI4fQ+eO4XrTiSdQBQOdXaq+K 1cb3FhT9DQlRw== Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2/6/2020 10:45 PM, Dmitry Osipenko wrote: > External email: Use caution opening links or attachments > > > 30.01.2020 13:33, Sameer Pujar =D0=BF=D0=B8=D1=88=D0=B5=D1=82: >> +static const struct dev_pm_ops tegra186_dspk_pm_ops =3D { >> + SET_RUNTIME_PM_OPS(tegra186_dspk_runtime_suspend, >> + tegra186_dspk_runtime_resume, NULL) >> + SET_LATE_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, >> + pm_runtime_force_resume) >> +}; > Could you please explain why drivers need the "late" system sleep? It was done to ensure core drivers are suspended first and defer the=20 codec driver suspend