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 1D33FCCF9E3 for ; Tue, 11 Nov 2025 03:17:45 +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:In-Reply-To:From:References:To:Subject:Cc:MIME-Version:Date: Message-ID:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=K5ABXh2/uhWraYUqJ9BUk7p0Ge5LHjETStkwwcjp/eo=; b=qETd++YoMHvTIlnp0URhM/v4xL jztiYCPcMcRfBHvV3HKcqD2ItALaBLAuMI2Eqye4SMZRTcI1fsvNkENUbo1P/n6WG2EVasf49n43Y /44jOirjlGB3YrGfjtHjlxfm7yFp3Jy69ByYRvfqFHDV31nU8+m3U++O4RbWuKNcCIJ1qmMuCzRTZ nQBpY64Q78gQWuk5bYuw7En3uhroJI+xjhfnlz8CRERvZGYPRexTKvTqP+PIpJXamzMFdBJ7faD+l +nXKOD2GIpueNAuFQVBCyM+5t5zOgWqeugrEH8ttVVzJGES1CfbyLBHLBUVjqAUKjrcw1Hsbq79C5 m63eGoJA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIesy-00000006QpD-2Vp7; Tue, 11 Nov 2025 03:17:36 +0000 Received: from mail-m83148.xmail.ntesmail.com ([156.224.83.148]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1vIesv-00000006QoP-2AxR; Tue, 11 Nov 2025 03:17:35 +0000 Received: from [172.16.12.129] (unknown [58.22.7.114]) by smtp.qiye.163.com (Hmail) with ESMTP id 2920392a1; Tue, 11 Nov 2025 11:17:24 +0800 (GMT+08:00) Message-ID: <05bd0efe-9a84-40e9-af07-51c0b0d865bf@rock-chips.com> Date: Tue, 11 Nov 2025 11:17:23 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Cc: shawn.lin@rock-chips.com, Damien Le Moal , Anand Moon , linux-pci@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org, Dragan Simic , Lorenzo Pieralisi , =?UTF-8?Q?Krzysztof_Wilczy=C5=84ski?= , Rob Herring , Bjorn Helgaas , Heiko Stuebner , Niklas Cassel , Manivannan Sadhasivam Subject: Re: [RESEND] Re: [PATCH] PCI: dw-rockchip: Skip waiting for link up To: FUKAUMI Naoki References: <55EB0E5F655F3AFC+136b89fd-98d4-42af-a99d-a0bb05cc93f3@radxa.com> <780a4209-f89f-43a9-9364-331d3b77e61e@rock-chips.com> <4487DA40249CC821+19232169-a096-4737-bc6a-5cec9592d65f@radxa.com> <363d6b4d-c999-43d4-866e-880ef7d0dec3@rock-chips.com> <0C31787C387488ED+fd39bfe6-0844-4a87-bf48-675dd6d6a2df@radxa.com> <2n3wamm3txxc6xbmvf3nnrvaqpgsck3w4a6omxnhex3mqeujib@2tb4svn5d3z6> From: Shawn Lin In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-HM-Tid: 0a9a70eb0e3b09cckunm01a7eea81458b7c X-HM-MType: 1 X-HM-Spam-Status: e1kfGhgUHx5ZQUpXWQgPGg8OCBgUHx5ZQUlOS1dZFg8aDwILHllBWSg2Ly tZV1koWUFDSUNOT01LS0k3V1ktWUFJV1kPCRoVCBIfWUFZGk5OTVZNQ05KSU5CSUMZQk9WFRQJFh oXVRMBExYaEhckFA4PWVdZGBILWUFZTkNVSUlVTFVKSk9ZV1kWGg8SFR0UWUFZT0tIVUpLSU9PT0 hVSktLVUpCS0tZBg++ DKIM-Signature: a=rsa-sha256; b=FKlailV5rqm923DDW0DU9rfU+TO/zidhTTeZUIGI9pQ9ppnHtt7efud90vTJpVC6/FOYjoiplSbH0R5EtAFYbldT2IzwOtsLUmRBFmpcAHH3p3yhIV3A3EpZ73wWPJHaJ3clVb2y/VshDuvK/8/n7XtUj8IMcVAW8xV6rbpOawI=; c=relaxed/relaxed; s=default; d=rock-chips.com; v=1; bh=K5ABXh2/uhWraYUqJ9BUk7p0Ge5LHjETStkwwcjp/eo=; h=date:mime-version:subject:message-id:from; X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20251110_191734_174543_231C60F4 X-CRM114-Status: GOOD ( 14.84 ) 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 在 2025/11/11 星期二 10:09, FUKAUMI Naoki 写道: > On 11/11/25 04:59, Niklas Cassel wrote: ... > > Leaving the commit message aside, I'm currently testing with a revert of > the two patches. > > Vanilla v6.18-rc5, CONFIG_PCI_DYNAMIC_OF_NODES=y, revert ec9fd499b9c6, > revert 0e0b45ab5d77. > > It works stably on the ROCK 5A. The link speed is 2Gb/s. > > The ROCK 5C is unstable. It initially worked with a link speed of 4Gb/s, > but eventually started showing kernel oops. The dts files for the 5A and > 5C are compatible and interchangeable, but even using the 5A's dts on > the 5C, the operation remains unstable. The link speed on ROCK 5A is 2Gb/s also means it's downgraded now. Did ROCK 5A work under the link speed of 4Gb/s before? In case it's signal integrity relevant, you could enable PCIE_DW_DEBUGFS and refer to Documentation/ABI/testing/debugfs-dwc-pcie to collect RASDES info from there. > > I plan to thoroughly investigate the ROCK 5C's behavior on v6.13, but > for now, I believe reverting the two patches is the correct action. > > Best regards, > > -- > FUKAUMI Naoki > Radxa Computer (Shenzhen) Co., Ltd. > >> Kind regards, >> Niklas >> > > >