From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from xry111.site (xry111.site [89.208.246.23]) (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 A976A38B7B6; Thu, 26 Feb 2026 07:36:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=89.208.246.23 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772091399; cv=none; b=iDOdUUUZK8F6FUdaSMqE+pPY4TwTItkP/plLLg+g7TNp8T9oovLljulYQJL54VkH+up49f5ed9gHRRKKwGalA18sW6NqCFrNX/Ckp/cQl05sLMS5C7mZeT4LBsb+8SerU3mlyICib5pOEYgmAsUjr8Rp1msXkTQR0FNIZglHaJs= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772091399; c=relaxed/simple; bh=Gi2X8IIIHcZEP84hgyLkzeNdRXjpZmebtYB+DrjCKyk=; h=Message-ID:Subject:From:To:Cc:Date:In-Reply-To:References: Content-Type:MIME-Version; b=P3CnUx8rLhWEYnzwUDLDpxdmihlAKjcP5M8kv6eU1kLG4wKycd5nYPmYrL0Eoy04NBetU2G7Zb+TTl8pvSTHnhq0iE7G/mx28Y3wdX+mkWgqtMyeyd+zrhu5QtC708z3lTgFP6Ub1vS5S5gEl9mYdHLWT8vqd3oOPtUumjK1pdk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site; spf=pass smtp.mailfrom=xry111.site; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b=eFTBsF15; arc=none smtp.client-ip=89.208.246.23 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=xry111.site Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=xry111.site Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=xry111.site header.i=@xry111.site header.b="eFTBsF15" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=xry111.site; s=default; t=1772091396; bh=Gi2X8IIIHcZEP84hgyLkzeNdRXjpZmebtYB+DrjCKyk=; h=Subject:From:To:Cc:Date:In-Reply-To:References:From; b=eFTBsF15FsWA53giH00ACeuVK/lv5oN8fF8LFzGonK4g3yeWbwUDOYwqW5HhiXm+b R88bquCj+ubNK1rygaRq0e7ZMKuhctnVjYblWZL3OMO2+IFUptc7nUADn1fXJzLz3R Zxzon7w3N9mSGrDrYg0qFE/BRxWg0d51NiKHPi84= Received: from [127.0.0.1] (2607-8700-5500-e873-0000-0000-0000-1001.16clouds.com [IPv6:2607:8700:5500:e873::1001]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (prime256v1) server-signature ECDSA (secp384r1) server-digest SHA384) (Client did not present a certificate) (Authenticated sender: xry111@xry111.site) by xry111.site (Postfix) with ESMTPSA id B00E71A41E7; Thu, 26 Feb 2026 02:36:30 -0500 (EST) Message-ID: <7a3e5d1d9cc7cca9502bab960d221eebfce69f61.camel@xry111.site> Subject: Re: [PATCH v7] PCI: loongson: Override PCIe bridge supported speeds for Loongson-3C6000 series From: Xi Ruoyao To: Manivannan Sadhasivam Cc: liziyao@uniontech.com, Lorenzo Pieralisi , Krzysztof =?gb2312?Q?Wilczy=A8=BDski?= , Rob Herring , Bjorn Helgaas , niecheng1@uniontech.com, zhanjun@uniontech.com, guanwentao@uniontech.com, Kexy Biscuit , linux-pci@vger.kernel.org, linux-kernel@vger.kernel.org, loongarch@lists.linux.dev, kernel@uniontech.com, Ilpo =?ISO-8859-1?Q?J=E4rvinen?= , Lain Fearyncess Yang , Ayden Meng , Mingcong Bai , stable@vger.kernel.org, Huacai Chen Date: Thu, 26 Feb 2026 15:36:28 +0800 In-Reply-To: References: <20260121-loongson-pci1-v7-1-fc79c85a574d@uniontech.com> <1d86afeeb6f9e7aa4ab1310d6339ad8dfb349a00.camel@xry111.site> Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable User-Agent: Evolution 3.58.3 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 On Thu, 2026-02-26 at 13:01 +0530, Manivannan Sadhasivam wrote: > On Thu, Feb 26, 2026 at 03:09:34PM +0800, Xi Ruoyao wrote: > > On Thu, 2026-02-26 at 12:01 +0530, Manivannan Sadhasivam wrote: > > > > Cc: stable@vger.kernel.org > > >=20 > > > Since this is a bug fix which needs to be backported, what is the com= mit SHA for > > > the Fixes tag? The one which added Loongson-3C6000 support to this dr= iver. > >=20 > > The PCI controller driver didn't have any change specifically for > > Loongson-3C6000 before this one, but the kernel will only boot on > > Loongson-3C6000 if the AVECINTC support (commit ae16f05c928a, i.e. Linu= x > > 6.12+) is available. > >=20 >=20 > So can you share the commit that introduced the Loongson-3C6000 platform? > ae16f05c928a just added the AVEC support. Though this might be necessary = for > booting, this is not the actual commit that introduced the buggy platform > support. The 3C6000 PCIe controller is a rather "standard ACPI" device (if we don't consider the quirks needed) so it should be already supported since cd89edda4002 ("PCI: loongson: Add ACPI init support"), despite the commit even predates the taping of 3C6000... --=20 Xi Ruoyao