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 40880C67861 for ; Sat, 6 Apr 2024 09:18:57 +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:MIME-Version:Date:Message-Id:Subject: References:In-Reply-To:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=SCu4gVw4kjkuetHuhqksHKIBgCyrbBXKFKYrvY3LE/0=; b=k5JBnMYL5mD9x+ 7ijSZPJhNmWKv0NJLP5/YXSDodx3qSiZM+VomqwiWI1tVlhI6XpZ7BTBOLOjoQkd6uHKdLO930PHt C8o0Xdmib+uafqpjBDyzX3KB/rJh95iuKLawuNkz0pV5eL6A5cvb+capEIr8WNM8EEHJOqhLVufBm v5oRfwyTaVP4aPlFF14ZtCkY0DXPMZHZRmIdUtQZOefHrZ/vd+nVI6KPcFIyMp+QckqQitIktGvo2 P4PNNzngMor+6baAvGrRi8M881qVhQ2qpUwnn/5RoXR8BmQToZvo1aK7JmVK9G6JfhZBV5lshHHkh oYUs5C/i+XD6g1lkokwQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rt2CD-0000000A1Oa-3TRv; Sat, 06 Apr 2024 09:18:45 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1rt2CA-0000000A1Mg-3M8G; Sat, 06 Apr 2024 09:18:44 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 0EB6ECE0A1E; Sat, 6 Apr 2024 09:18:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id AD2D1C433F1; Sat, 6 Apr 2024 09:18:34 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1712395120; bh=srWDqFupvZIFWW4YuJg9/k4T6xavGfgaXIAS7e13Kko=; h=From:To:Cc:In-Reply-To:References:Subject:Date:From; b=JuYAz4FMXeLoVF7y6YymuOAgO0ndvqFogoacYc2yFzZFuzEjf9P7rd1qdQRjBCMoj BYEDb0xtj1oR3oIp1ipb77zrlwdVVRQL4j40o+Ie23nYUWxYdXaK69aw6PAey4Aq7O rogIOW6Q9/AwMnLMGPct5Djexz/lEQgbAu/QrVX5EsD+DwXYnvJyEQuUnvMVuYCw0L shXbzAlyfW8rzmhjNqpQt/WpaCZG/KzWw9cIKrPS1m10xfDXBdvrd06JkdhrHltW06 gBYFooD+7c52V8tCKcAv5Iy6gScNMo/6dd1gz63klI0iiKAn4j2GldO018D7jz+6on eBW+hicw4xgSg== From: Vinod Koul To: linux-phy@lists.infradead.org, Marcel Ziswiler Cc: linux-imx@nxp.com, Lucas Stach , linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, Richard Zhu , linux-kernel@vger.kernel.org, Marcel Ziswiler , Fabio Estevam , Heiko Stuebner , Kishon Vijay Abraham I , Marc Kleine-Budde , Rob Herring , Sascha Hauer , Shawn Guo , Tim Harvey , Yang Li , imx@lists.linux.dev In-Reply-To: <20240322130646.1016630-1-marcel@ziswiler.com> References: <20240322130646.1016630-1-marcel@ziswiler.com> Subject: Re: [PATCH v1 0/1] phy: freescale: imx8m-pcie: facing pcie link-up instability Message-Id: <171239511427.352254.8525089049107113141.b4-ty@kernel.org> Date: Sat, 06 Apr 2024 14:48:34 +0530 MIME-Version: 1.0 X-Mailer: b4 0.12.3 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240406_021843_052330_70AA6E8D X-CRM114-Status: GOOD ( 10.09 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 22 Mar 2024 14:06:31 +0100, Marcel Ziswiler wrote: > In our automated testing setup, we use Delock Mini-PCIe SATA cards [1]. > While this setup has proven very stable overall we noticed upstream on > the i.MX8M Mini fails quite regularly (about 50/50) to bring up the PCIe > link while with NXP's downstream BSP 5.15.71_2.2.2 it always works. As > that old downstream stuff was quite different, I first also tried NXP's > latest downstream BSP 6.1.55_2.2.0 which from a PCIe point of view is > fairly vanilla, however, also there the PCIe link-up was not stable. > Comparing and debugging I noticed that upstream explicitly configures > the AUX_PLL_REFCLK_SEL to I_PLL_REFCLK_FROM_SYSPLL while working > downstream [2] leaving it at reset defaults of AUX_IN (PLL clock). > Unfortunately, the TRM does not mention any further details about this > register (both for the i.MX 8M Mini as well as the Plus). Maybe somebody > from NXP could further comment on this? > > [...] Applied, thanks! [1/1] phy: freescale: imx8m-pcie: fix pcie link-up instability commit: 3a161017f1de55cc48be81f6156004c151f32677 Best regards, -- ~Vinod _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel