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 CA98BC369A2 for ; Mon, 14 Apr 2025 14:28:57 +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=mVQittKGhI2r1Gng3f3wdWMiLiIYwmslc/+vgQa7Izo=; b=MpumyYphSvdSw7 aO1aCzUVsLeZH/56Z7sB/Z4S0Bdp6dHpPcGFPgHvYdhH8D2DpVMALE34HZTcDpgC/RmoDsNEDl3cn N29OiPzCxJpc4rcIT2OypZY9Q3R6GBV/3t7jaanWFezvqupOBoKVEjyO7TKX2ZVVmVE/rxYp+s2kO 3wLJT09QGp0mAM/ykVOFuSZRjjplvvYfnjVClFPWA8RGUne23YKTxAtkCZlruh3KKSOd1X6LFP/7f SNG9Xzh2HDm0FGi7mM6Um3t6mnevZAEJWQ2iu/7Ob/6BE/q7D72jBGiI7MOfhfdhaMfXS644dvHiQ W7FBkOHaeV6jmU9ZKF8Q==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1u4Kno-00000002NcK-1Awi; Mon, 14 Apr 2025 14:28:48 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1u4KaZ-00000002KBK-1kbL for linux-rockchip@lists.infradead.org; Mon, 14 Apr 2025 14:15:08 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id DE8485C55BD; Mon, 14 Apr 2025 14:12:49 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 3455FC4CEE2; Mon, 14 Apr 2025 14:15:05 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744640106; bh=N59mWOOmWYHFDa9wgd8r2eaYDiBQILRhojph9hULj9c=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=EQlh+xJkLK8zR2EKzmrKEhYIjgvdIUwlT7vbz19lC+HCBa3zRIOisBtf7SPvAHeCh 8+t45kJAbu3enKP1KBM/giIp6BWaJyQemD99BGFoZCyh6wNieD8UY+akHZIz+UOASt jQrqDu2Ul3VO2djOxYKUBCIc666Jk7x1inTG0XH7Fg/qeerBnlANQXj7quV1rB6yq3 qVGD66K5IEHaNI0yjnGyv/AMlkXRSCGzBTpMmrcBWe67zeZE9+ctL9yKQyxvcqxLcw Ta3gTCxbmo7xz6/EylwdeolbOQJvRbLr8RER2YRk1HsUvNzSVkQt30r2Q5LLi+rvbq AQOMsSepFwC6A== Date: Mon, 14 Apr 2025 16:15:02 +0200 From: Niklas Cassel To: Shawn Lin Cc: Bjorn Helgaas , Lorenzo Pieralisi , Krzysztof =?utf-8?Q?Wilczy=C5=84ski?= , linux-pci@vger.kernel.org, linux-rockchip@lists.infradead.org Subject: Re: [PATCH v3 1/2] PCI: dw-rockchip: Enable L0S capability Message-ID: References: <1744594051-209255-1-git-send-email-shawn.lin@rock-chips.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1744594051-209255-1-git-send-email-shawn.lin@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250414_071507_505379_85AC057C X-CRM114-Status: GOOD ( 10.58 ) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org On Mon, Apr 14, 2025 at 09:27:31AM +0800, Shawn Lin wrote: > L0S capability isn't enabled on all SoCs by default, so enabling it > in order to make ASPM L0S work on Rockchip platforms. We have been > testing it for quite a long time and found the default FTS number > provided by DWC core doesn't work stable and make LTSSM switch between > L0S and Recovery, leading to long exit latency, even fail to link sometimes. > So override it to the max 255 which seems work fine under test for both PHYs > used by Rockchip platforms. > > Signed-off-by: Shawn Lin Reviewed-by: Niklas Cassel _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip