From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtpbgsg2.qq.com (smtpbgsg2.qq.com [54.254.200.128]) (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 A2BDC3D3D12; Thu, 24 Sep 2026 02:24:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=54.254.200.128 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790216694; cv=none; b=cWZL3TpSzzQ6IfbkRg7oYuZBvdqdALSNO6L86H0IBDdzXcj4MG1O/L7bAPQ7cmu4H9LHKmmVehjASLeb3Fz84u558Cdyn3eVl27xaNrSM+uhW4AlkM5tpxWL7qyLpqKxYiIjMV41hZ6/Sj8IJQ9w+NbRfTb7FnmZMQhNYJS0KZY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1790216694; c=relaxed/simple; bh=m1/plKS76wHa8P1yN4wrEUPS7ccVDolVN5V3LZrJIP0=; h=Mime-Version:Content-Type:Date:Message-Id:To:Cc:Subject:From: References:In-Reply-To; b=pbKr3lmObphs2XNzLsLiwjFWibR5CHx/nL7B7+HJ6c0NV+KlUB1LPI9QI4tpmfwyAaThMGejqvuJ4vba4gf4sRFynhyH5LhgOJIqEa/Mq3htTfpzxOQMDCbUyjnWBuzw5/B3059uZTWRctLnZKNdiq4ggGFjO/mkUnW93c8d9N0= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linux.spacemit.com; spf=none smtp.mailfrom=linux.spacemit.com; dkim=pass (1024-bit key) header.d=linux.spacemit.com header.i=@linux.spacemit.com header.b=XK/bUJSD; arc=none smtp.client-ip=54.254.200.128 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=linux.spacemit.com Authentication-Results: smtp.subspace.kernel.org; spf=none smtp.mailfrom=linux.spacemit.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux.spacemit.com header.i=@linux.spacemit.com header.b="XK/bUJSD" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.spacemit.com; s=mxsw2412; t=1790216634; bh=m1/plKS76wHa8P1yN4wrEUPS7ccVDolVN5V3LZrJIP0=; h=Mime-Version:Date:Message-Id:To:Subject:From; b=XK/bUJSDNnA37io2rYQqr+WQ+f00Hgp10CDdB/RQmECtCAq7SOwn3TP8koqC0Ef9z mdgRle6siCLiu+QsKq32KAFqxGFmkbVaEmgpNCo/cDIx2XlNl9oUKduwQ+ZjRdeKH4 tyMp9b5zaqB9jxGIWzom0/SecjudOagRxoO8jGB4= X-QQ-mid: esmtpsz16t1790216627tb4707d8f X-QQ-Originating-IP: gSZvk6BWSQYXl8jnfSQaWrx+BEE40A51kr/HVCALHkM= Received: from = ( [120.237.158.181]) by bizesmtp.qq.com (ESMTP) with id ; Thu, 24 Sep 2026 10:23:45 +0800 (CST) X-QQ-SSF: 0000000000000000000000000000000 X-QQ-GoodBg: 0 X-BIZMAIL-ID: 15881123494600933762 EX-QQ-RecipientCnt: 12 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 Content-Type: multipart/signed; boundary=e16cacdaf47fb589a7d08498647ea7242f3bdecc260bc848fe7b9de12411; micalg=pgp-sha512; protocol="application/pgp-signature" Date: Thu, 24 Sep 2026 10:23:43 +0800 Message-Id: To: "Encrow Thorne" , "Lorenzo Pieralisi" , =?utf-8?q?Krzysztof_Wilczy=C5=84ski?= , "Manivannan Sadhasivam" , "Rob Herring" , "Bjorn Helgaas" , "Yixun Lan" , "Troy Mitchell" Cc: , , , Subject: Re: [PATCH] PCI: spacemit: Ignore link partner PERST on K1 From: "Troy Mitchell" X-Mailer: aerc 0.21.0-reader-ipc4 References: <20260924-spacemit-k1-pcie-fix-v1-1-002b5c1ba9fc@linux.spacemit.com> In-Reply-To: <20260924-spacemit-k1-pcie-fix-v1-1-002b5c1ba9fc@linux.spacemit.com> X-QQ-SENDSIZE: 520 Feedback-ID: esmtpsz:linux.spacemit.com:qybglogicsvrgz:qybglogicsvrgz3a-0 X-QQ-XMAILINFO: MK2msS8Oy7OGPOIcZfmTKoEmcz4DDDj3fPmJ5vzepI528Bqp9BvDFnPo mNlOw/L8neB+NhxPgMmTD34K/8RCnGJB+qbhnPeYRCkXbVjYwWkueycpUzlv3pnjgo0eklH AVydfJszJQTU+haljcVX9KHJJRYHDckgFFxxQIkDQv4Qp+JUD4TCfttx6xAbifb9xZ+R2rO 7vHJwJH8PUwgZFc97oRMkjQ0ySgKzDqRHqClqAlEs9VZiHSIk6HlMJx8bokyBiZTdXgqGvw 0Orjwo2aJuk/T3gp1FOW4nD8VOdvtu9Qi398fftN1cxEfhftQPJ/YGXQsIxj90ahSkHTPal 3alCDULUG9Lm4/KrTJv0dQs1mznztHa7HmeQTO7jR0AdkTpyggef1WU7rMm1uJtg40uzdZi fJSubaGdDjbTb/uVPwgNEKyy7/+W38KO9y5hoMjpAH9HnTkp7vZLfON33NQ6QYd8iSM9gU7 4ZuyyX+Iku17wMzNrS9zRdOb3R/dGBpqEU9n0PR8O/QnIboqLCJ+17ZcyB77+g0aWKMMKuH 5fXj2ufj25dvaiFsXLih8NcR4sfEACV76N23m72WyrOEq86mIXWVsaTaMtzshdAmFFF2d2v 61Kv8r5EiYd5dvMJ9TStBK5hOpVLnBsXKZNimBdMw5yljxoVF++LuT0D/itXAcaIag22P5O WvmkBLunK2E7NgwPbsOgSsn/JMyVQUJpMEemrp+ol53sM2DIubFFeRj3eOX2X083fYDc3FW kPaY1gDYwyzHgRQSlQLTF2YJhW1EidUgm9vIKVWYTtbVDwV6qEHSGix1pFGMn2gzhV3HUCe k4nPljh5FuAD75OasppHjaa+ZxKSb+rpf4gMb2N+/LTDOD1gHILMeKEvSJLIH3faPJgWE3G /CJRrOCFe36RvcHEah6yLvfh+jcYHu2iZUTwswa9pakNdMZTAF8n+Jg1R3yIgCisM0tYdI2 ggyOIzt2pkB5ippTk5onMfwOAG3h/8mdVsWaAxI2dp1E0v1rRBiDdyHmF1eN0qrbTLulq/g oMGqgbX+LASELK7JlVRrUYyvT6+QFnUjKlWG3IF8kzCrg8qyi6XrmNnAoR8gk/tbTnZv8et KniHPSvWeZEzEGhwe1DtJftO9zztSw6uHyVXZnmv3kyPdAQTFcbNIiIXw0W/6G1ZurE9dJU Ee+/u9rirfE5Yfc= X-QQ-XMRINFO: M/715EihBoGS47X28/vv4NpnfpeBLnr4Qg== X-QQ-RECHKSPAM: 0 --e16cacdaf47fb589a7d08498647ea7242f3bdecc260bc848fe7b9de12411 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 On Thu Sep 24, 2026 at 10:04 AM +08, Encrow Thorne wrote: > The K1 PCIe controller and PHY are affected by the PERST signal from > the link partner during initialization. With some devices connected, > this can prevent host initialization from progressing and cause the > system to hang while probing the PCIe controller. > > Set PCIE_IGNORE_PERSTN before accessing the DBI registers. When set, > this bit makes both the PCIe controller and PHY ignore the PERST > signal from the link partner. > > This allows host initialization to complete without being affected by > the link partner's PERST state. > > Signed-off-by: Encrow Thorne Fix tag and reported-by tag [1]? Link: https://lore.kernel.org/all/20260825052249.66921-1-bbanelli@gmail.com= / [1] --=20 Troy Mitchell --e16cacdaf47fb589a7d08498647ea7242f3bdecc260bc848fe7b9de12411 Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iIMEABYKACsWIQSL4Ay2cExaPXAQcU2YCe+A+TM0LwUCarSJrw0caUB0cm95LXku b3JnAAoJEJgJ74D5MzQv9l4A/jDq4Lfxvd/vk+CYfDPCZ6wh4sIWYoSApbpwTzsH T9olAP448MnJVizefhN0woHdp/2Vuq3AEAYcA8zv9Vo4gnM2BA== =RgJC -----END PGP SIGNATURE----- --e16cacdaf47fb589a7d08498647ea7242f3bdecc260bc848fe7b9de12411--