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 EF326C43219 for ; Thu, 10 Nov 2022 07:16:03 +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=/nXLw7sbUlTHWgi80pD+d7bosi68t/wo/A2YOJmh0BI=; b=yW5cdFnqItSYEn sBeOwMvkgLBCjoqQz9MEtjtckQlIfTASDNU6/iIhVNINVH+AgaI6JNe44cvd0uudEhmLIqYMUhhwn l9zwWKjUUtb9tqGfxLnjg1DfhIbhQvBp1My3Haeto39H0a7ggncz+CBByPKURjKRbJKFWlVVyuZej Eiz4ws3OToIvVKw9Q/P7crq8dd0JCl50EJQnNoyct06GbQLIQmkDmicvZdehMH3NhVgnlM4hD0ldG meYcAgB7k9+YCIHgNi1TOAdG7v+mvulTjvfnuG5EK6KH7LVfjv944UPDr8i08i/V101v+0jU1YfDt yPjVk+dAHO5SpdwJ7WpQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1ot1n9-003klB-D7; Thu, 10 Nov 2022 07:16:03 +0000 Received: from ams.source.kernel.org ([2604:1380:4601:e00::1]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1ot1n6-003kkI-LY for linux-phy@lists.infradead.org; Thu, 10 Nov 2022 07:16:01 +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 ams.source.kernel.org (Postfix) with ESMTPS id 230C1B82089; Thu, 10 Nov 2022 07:15:59 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 41228C433C1; Thu, 10 Nov 2022 07:15:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1668064557; bh=zkEbitGh6NuYdSKumNuvy2niopfYizRVWE/5Z5xVl1U=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=dSgZ/lGN4y30dhemGiIjrjRTiFDJhKGw0dZ+XODNdI5UmHUgWpj9lmTKq/yfJHUCn po1o/W0JJghhEOaAMkra8cQWYHe1sobakzIoDp6P8ons0loJ5nPlZvc3OdB4DAQUQN jeo4uLSzeQi3nPGWlMkQbEmuaBYYJ8pwkoM1k97Qe4NzkSiCFxd1rjEPauY3arsJZq Mcvp1tU+KtBR4iAmuT4t0gqmIe3rKKJb4FpoVwK/c0uClJ0udGtgRRYi7zrgXbv2OW zLHAjYacQnn7n2OiEY0/Il/JSEKmgWnXIQUBuz21qcHLOmdXz9trVg/M+h8pLLJOHP D5kDtgtbtkIlA== Date: Thu, 10 Nov 2022 12:45:53 +0530 From: Vinod Koul To: Manivannan Sadhasivam Cc: andersson@kernel.org, dmitry.baryshkov@linaro.org, linux-arm-msm@vger.kernel.org, linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH v2 1/2] phy: qcom-qmp-pcie: Fix high latency with 4x2 PHY when ASPM is enabled Message-ID: References: <20221102081835.41892-1-manivannan.sadhasivam@linaro.org> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20221102081835.41892-1-manivannan.sadhasivam@linaro.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20221109_231600_866281_0EFC5632 X-CRM114-Status: UNSURE ( 7.97 ) X-CRM114-Notice: Please train this message. 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 02-11-22, 13:48, Manivannan Sadhasivam wrote: > The PCIe QMP 4x2 RC PHY generates high latency when ASPM is enabled. This > seem to be fixed by clearing the QPHY_V5_20_PCS_PCIE_PRESET_P10_POST > register of the pcs_misc register space. Applied, thanks -- ~Vinod -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy