From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-m32108.qiye.163.com (mail-m32108.qiye.163.com [220.197.32.108]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 771C833B6C8; Tue, 11 Nov 2025 03:22:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=220.197.32.108 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762831365; cv=none; b=DGM1A1ImeFsOwYltYqyvA+1UxJ46xXITUsuPsG6i6G4LzQ+6TbwO6hLDU8sNKueESIhwhmrceDh4WOdrG/LS3wC3ZYWudPT+LNQlYu3koxqolyX6DVPRgYR1ZWbV2rU/+7ZzhlPNwEtp9PUVCwt5jR5+D4n2xQtbqaV1epwsl2I= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762831365; c=relaxed/simple; bh=kT2YaKBzTRkmBnVi68pXEXDYGZj1X4zMox0oM5Y386E=; h=Message-ID:Date:MIME-Version:Cc:Subject:To:References:From: In-Reply-To:Content-Type; b=M6i71NEdjrXFOkJF/yZO5KzBkTs5Cn0WC1wGkif5+WqpdPDEca3K7bCi8/KELBPDGUXJN8G6b5bELhSdrLlwkve2d8nJpjjeZa7mCzVJXCBhcNHsqkNAGq3bio/Lh9ufOUTqansbZJ2hlW96rwjMdnQ1XZb616xPUhOnaLp6Q1Q= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com; spf=pass smtp.mailfrom=rock-chips.com; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b=FKlailV5; arc=none smtp.client-ip=220.197.32.108 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=rock-chips.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=rock-chips.com header.i=@rock-chips.com header.b="FKlailV5" 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 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: 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; 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 >> > > >