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[209.132.180.67]) by mx.google.com with ESMTP id i11si12734600pgq.332.2018.01.21.17.19.24; Sun, 21 Jan 2018 17:20:07 -0800 (PST) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751098AbeAVBSY (ORCPT + 99 others); Sun, 21 Jan 2018 20:18:24 -0500 Received: from regular1.263xmail.com ([211.150.99.131]:40217 "EHLO regular1.263xmail.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751050AbeAVBSW (ORCPT ); Sun, 21 Jan 2018 20:18:22 -0500 Received: from randy.li?rock-chips.com (unknown [192.168.167.229]) by regular1.263xmail.com (Postfix) with ESMTP id A95FB61EB; Mon, 22 Jan 2018 09:18:15 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 Received: from [192.168.10.130] (localhost [127.0.0.1]) by smtp.263.net (Postfix) with ESMTPA id C40043BC; Mon, 22 Jan 2018 09:18:11 +0800 (CST) X-RL-SENDER: randy.li@rock-chips.com X-FST-TO: heiko@sntech.de X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: randy.li@rock-chips.com X-UNIQUE-TAG: X-ATTACHMENT-NUM: 0 X-SENDER: randy.li@rock-chips.com X-DNS-TYPE: 0 Received: from [192.168.10.130] (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 1257XTJHTT; Mon, 22 Jan 2018 09:18:15 +0800 (CST) Subject: Re: [PATCH v4 08/13] iommu/rockchip: Control clocks needed to access the IOMMU To: JeffyChen , Robin Murphy , linux-kernel@vger.kernel.org, tfiga@chromium.org Cc: Mark Rutland , devicetree@vger.kernel.org, xxm@rock-chips.com, Joerg Roedel , jcliang@chromium.org, linux-rockchip@lists.infradead.org, iommu@lists.linux-foundation.org, Rob Herring , linux-arm-kernel@lists.infradead.org, Heiko Stuebner References: <20180118115251.5542-1-jeffy.chen@rock-chips.com> <20180118115251.5542-9-jeffy.chen@rock-chips.com> <5A60AE41.2050101@rock-chips.com> From: Randy Li Organization: Fuzhou Rockchip Message-ID: <1f4b3c0d-1414-0012-a072-f4a11f432c21@rock-chips.com> Date: Mon, 22 Jan 2018 09:18:09 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.5.2 MIME-Version: 1.0 In-Reply-To: <5A60AE41.2050101@rock-chips.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 01/18/2018 10:25 PM, JeffyChen wrote: > Hi Robin, > > On 01/18/2018 08:27 PM, Robin Murphy wrote: >>> >> >> Is it worth using the clk_bulk_*() APIs for this? At a glance, most of >> the code being added here appears to duplicate what those functions >> already do (but I'm no clk API expert, for sure). > right, i think it's doable, the clk_bulk APIs are very helpful. i think > we didn't use that is because this patch were wrote for the chromeos 4.4 > kernel, which doesn't have clk_bulk yet:) > > will do it in the next version, thanks. Also the power domain driver could manage the clocks as well, I would suggest to use pm_runtime_*. >> >> Robin. > > > > _______________________________________________ > Linux-rockchip mailing list > Linux-rockchip@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-rockchip > -- Randy Li