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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 85606C77B75 for ; Mon, 8 May 2023 11:43:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=hPP16pguftOuO0Ngv0jnwDUZMwlaDvenQXvOJ4FjrRM=; b=dsBoXTkVfbsyR6 L4nm/5ztJqA2H66fpF8JxAs03LKnUHsfs5sUovtkR2ZPEnl0rbVTQI5/Vpz/xa7qwBMVzdkV1XkVb uwGW2Mx9JDaWNF2oft2YxQsW0aFzE8ohVsUl2ZbOZiYB5RnXhiuL1quEWO1JrvrRD8R3+w7f8qbdb 7AlSD5kfxw0wcvfKJV7QyMEQcisCLo/ir+SiaMjkuiMiOt9C7vAbyO9lBRWhSF1mAf7GXFyOHLjp1 ohRGyt2t48kg3bWSAq8ykUwwr7ZG8Ax11xxZSeRp1jjrOOpga3eXtAKgU0u1WVK1I7cunS0l0HZUV Nblr33poLLSOD5YsyA9w==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1pvzH2-000QjB-0c; Mon, 08 May 2023 11:43:24 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1pvzGz-000QiD-1Z; Mon, 08 May 2023 11:43:22 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 1377361518; Mon, 8 May 2023 11:43:21 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E734CC433A0; Mon, 8 May 2023 11:43:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1683546200; bh=01f3Go1YWZ5fuIRF6yYHIXEN7EeVi5WcswKnPII6Gxc=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=L4rq1gttmEtCjLmqaIPKu7Le4ItutJzvCW83HeWYf+2MX5cR+PdcH+7//L1c2Fqrv Wt4xkajZwFbwFhl0Pn9gsYztzmZ2WkceRLzXxjh08QrOTkLydZb1tEOGHSzHNJuAHA qkTdfOuT2YqC0silvowU9qw6/ImUJ1X7K37ixF3J9Q2YG8unWtXsqwAxkVAsavV1Ri RWIE9aF/0L5IjgHW6jn6Oof3dt+vTacZX3gUVdSh2c/i8acwXL9rAEAT9k9UKXMM6i WMF2+pyiT//9uwH6do6TU1M6LCixIxUoRVWsSax7OHlj+/cpoLaYtGmeT0OLmYbKB7 c5qIcyOIjDA0g== Date: Mon, 8 May 2023 17:13:16 +0530 From: Vinod Koul To: Daniel Machon Cc: kishon@kernel.org, Steen.Hegelund@microchip.com, UNGLinuxDriver@microchip.com, joe@perches.com, linux-phy@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/7] Power down serdes lanes and CMUs initially Message-ID: References: <20230417180335.2787494-1-daniel.machon@microchip.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20230417180335.2787494-1-daniel.machon@microchip.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230508_044321_562502_F4633467 X-CRM114-Status: GOOD ( 11.48 ) X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 17-04-23, 20:03, Daniel Machon wrote: > This patch series aims to lower the power consumption of the Sparx5 > switch chip, by configuring optimal quiet mode for serdes lanes, as well > as powering down unused CMUs (Clock Multiplier Unit). Before this series, > serdes lane quiet mode were not optimally configured, and all the CMUs were > powered on by default. This uses needless power. > > Each serdes lane is provided a CMU clock, depending on the serdes mode > and the serdes index. CMUs will now be powered on individually, when > needed. The amount of power saved varies, depending on the port > configuration. As a reference, this change saves about 1W on > sparx5_pcb135 and 2W on sparx5_pcb134. Applied, thanks -- ~Vinod -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy