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 27B7EC79FBF for ; Thu, 10 Sep 2026 10:37:49 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: Content-Type: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=ODxVBtJRZe/U6qUE2Fp1FYpMsJS82tGUQMuUfDkgxMg=; b=3J0l0vPkLQRp/S21ahIph8aWUN wTIC6yoZwukGexlPkoruqB4+zXgQ0XnEuDQ2RXKPIOQ77qBOl2uBACXa3fyNfscMmmjiOqhnMteuN 3joDPIMTg7+6es0xU0FavwJvkxkXqhSu27qpNcHaq1572MeYlQUtLmI7Yt4Krfn0t3LO+4fitWn7A Je+t/gZBSDc8+iTn1jZrjAGo0qQjG1Pxs+Hzoxg5gpkpr0bVREfPDjNe/JOwPW25YKthG37pEgzAz P795d9wjL7wp/B3Z+37zSMQjvpIAAZMYvs+SlHyew3L+Ota38hfOIyXllv4j/701O2nQ/lYd4qVqM 0/pgNchw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4cA3-0000000E5Wn-0InQ; Thu, 10 Sep 2026 10:37:43 +0000 Received: from sea.source.kernel.org ([2600:3c0a:e001:78e:0:1991:8:25]) by bombadil.infradead.org with esmtps (Exim 4.99.1 #2 (Red Hat Linux)) id 1x4cA1-0000000E5WS-30y0 for linux-arm-kernel@lists.infradead.org; Thu, 10 Sep 2026 10:37:41 +0000 Received: from smtp.kernel.org (quasi.space.kernel.org [100.103.45.18]) by sea.source.kernel.org (Postfix) with ESMTP id 3D0DF41610; Thu, 10 Sep 2026 10:37:41 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 55CDA1F000FF; Thu, 10 Sep 2026 10:37:36 +0000 (UTC) From: Manivannan Sadhasivam To: frank.li@nxp.com, l.stach@pengutronix.de, lpieralisi@kernel.org, kwilczynski@kernel.org, mani@kernel.org, robh@kernel.org, bhelgaas@google.com, s.hauer@pengutronix.de, kernel@pengutronix.de, festevam@gmail.com, hongxing.zhu@oss.nxp.com Cc: linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org, Richard Zhu , Frank Li In-Reply-To: <20260803034319.992323-1-hongxing.zhu@oss.nxp.com> References: <20260803034319.992323-1-hongxing.zhu@oss.nxp.com> Subject: Re: [PATCH v5] PCI: imx6: Update MPLLB bandwidth to improve i.MX95 Gen3 PCIe stability Message-Id: <178903665594.5136.3269558239888927735.b4-ty@b4> Date: Thu, 10 Sep 2026 12:37:35 +0200 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit X-Mailer: b4 0.15.2 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: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, 03 Aug 2026 11:43:19 +0800, hongxing.zhu@oss.nxp.com wrote: > We observed poor bandwidth margins during i.MX95 Gen3 PCIe tests with > the default MPLLB_BANDWIDTH value (120). The margins worsened across > voltage and temperature (VT) variations and different test matrices, > potentially causing link stability issues. > > Testing with MPLLB_BANDWIDTH value of 140 (0x8c) shows significant > improvement in bandwidth margins across all VT conditions and test > scenarios. > > [...] Applied, thanks! [1/1] PCI: imx6: Update MPLLB bandwidth to improve i.MX95 Gen3 PCIe stability commit: 50901546f3bf9e76cc13d8146d1b1604a392a477 Best regards, -- மணிவண்ணன் சதாசிவம்