{"id":2222598,"url":"http://patchwork.ozlabs.org/api/patches/2222598/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260413071401.1151-3-jian.yang@mediatek.com/","project":{"id":28,"url":"http://patchwork.ozlabs.org/api/projects/28/?format=json","name":"Linux PCI development","link_name":"linux-pci","list_id":"linux-pci.vger.kernel.org","list_email":"linux-pci@vger.kernel.org","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260413071401.1151-3-jian.yang@mediatek.com>","list_archive_url":null,"date":"2026-04-13T07:13:56","name":"[2/2] PCI: mediatek-gen3: Add a shutdown callback to cotnrol PERST# signal","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"5a213ac822ede04def15fa16cdef1f9b35ea2a59","submitter":{"id":85572,"url":"http://patchwork.ozlabs.org/api/people/85572/?format=json","name":"Jian Yang","email":"jian.yang@mediatek.com"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/linux-pci/patch/20260413071401.1151-3-jian.yang@mediatek.com/mbox/","series":[{"id":499653,"url":"http://patchwork.ozlabs.org/api/series/499653/?format=json","web_url":"http://patchwork.ozlabs.org/project/linux-pci/list/?series=499653","date":"2026-04-13T07:13:55","name":"PCI: mediatek-gen3: Fix the control timing of PERST#","version":1,"mbox":"http://patchwork.ozlabs.org/series/499653/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2222598/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2222598/checks/","tags":{},"related":[],"headers":{"Return-Path":"\n <linux-pci+bounces-52417-incoming=patchwork.ozlabs.org@vger.kernel.org>","X-Original-To":["incoming@patchwork.ozlabs.org","linux-pci@vger.kernel.org"],"Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=mediatek.com header.i=@mediatek.com header.a=rsa-sha256\n header.s=dk header.b=bINiSEyW;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org\n (client-ip=2600:3c04:e001:36c::12fc:5321; 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arc=none smtp.client-ip=60.244.123.138","X-UUID":["5f3eb93a370811f1ae70033691e9ac7d-20260413","5f3eb93a370811f1ae70033691e9ac7d-20260413"],"DKIM-Signature":"v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed;\n d=mediatek.com; s=dk;\n\th=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From;\n bh=xfFRo0UHQusuMDmGKevH0yFYeubiKUgkDDCMUWqjD1Y=;\n\tb=bINiSEyWMudMogYpEeJHY9RajiFIFstwyJMpLFkiDDBafhPJ8jpXAjnTr6MMicU/oXl3yAnkLmtRmmV8DCwLVyqIiJzCSL9ZnQ/ny7wu5yycwMaybldajO0j8sGWeUb68vlT+GNiCZ1PnzEFOhuwT9HJnPVzCksf1P8r3khA7+o=;","X-CID-P-RULE":"Release_Ham","X-CID-O-INFO":"VERSION:1.3.12,REQID:c10eb28e-2a09-4397-a958-80539d315422,IP:0,U\n\tRL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION\n\t:release,TS:-5","X-CID-META":"VersionHash:e7bac3a,CLOUDID:8cd5cb24-cb5c-4236-a89a-9a7fb20c9bc4,B\n\tulkID:nil,BulkQuantity:0,Recheck:0,SF:81|82|102|836|865|888|898,TC:-5,Cont\n\tent:0|15|50,EDM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:-1,COL:0\n\t,OSI:0,OSA:0,AV:0,LES:1,SPR:NO,DKR:0,DKP:0,BRR:0,BRE:0,ARC:0","X-CID-BVR":"2,SSN|SDN","X-CID-BAS":"2,SSN|SDN,0,_","X-CID-FACTOR":"TF_CID_SPAM_SNR","X-CID-RHF":"D41D8CD98F00B204E9800998ECF8427E","From":"Jian Yang <jian.yang@mediatek.com>","To":"Matthias Brugger <matthias.bgg@gmail.com>,\n AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>,\n Ryder Lee <ryder.lee@mediatek.com>,\n Lorenzo Pieralisi <lpieralisi@kernel.org>, =?utf-8?q?Krzysztof_Wilczy=C5=84?=\n\t=?utf-8?q?ski?= <kwilczynski@kernel.org>,\n Manivannan Sadhasivam <mani@kernel.org>, Rob Herring <robh@kernel.org>,\n Bjorn Helgaas <bhelgaas@google.com>","CC":"<linux-pci@vger.kernel.org>, <linux-mediatek@lists.infradead.org>,\n\t<linux-kernel@vger.kernel.org>,\n\t<Project_Global_Chrome_Upstream_Group@mediatek.com>,\n\t<jian.yang@mediatek.com>, <chuanjia.liu@mediatek.com>,\n\t<yonglong.wu@mediatek.com>","Subject":"[PATCH 2/2] PCI: mediatek-gen3: Add a shutdown callback to cotnrol\n PERST# signal","Date":"Mon, 13 Apr 2026 15:13:56 +0800","Message-ID":"<20260413071401.1151-3-jian.yang@mediatek.com>","X-Mailer":"git-send-email 2.46.0","In-Reply-To":"<20260413071401.1151-1-jian.yang@mediatek.com>","References":"<20260413071401.1151-1-jian.yang@mediatek.com>","Precedence":"bulk","X-Mailing-List":"linux-pci@vger.kernel.org","List-Id":"<linux-pci.vger.kernel.org>","List-Subscribe":"<mailto:linux-pci+subscribe@vger.kernel.org>","List-Unsubscribe":"<mailto:linux-pci+unsubscribe@vger.kernel.org>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","Content-Type":"text/plain"},"content":"Add a shutdown callback to control the timing of PERST# and power\nduring system shutdown, ensuring that the PERST#, as required by the\nPCIe CEM specification, is active before the power on connector is\nremoved.\n\nSigned-off-by: Jian Yang <jian.yang@mediatek.com>\n---\n drivers/pci/controller/pcie-mediatek-gen3.c | 9 +++++++++\n 1 file changed, 9 insertions(+)","diff":"diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c\nindex 58ba1aa35a22..4915979968b9 100644\n--- a/drivers/pci/controller/pcie-mediatek-gen3.c\n+++ b/drivers/pci/controller/pcie-mediatek-gen3.c\n@@ -1285,6 +1285,14 @@ static void mtk_pcie_remove(struct platform_device *pdev)\n \tmtk_pcie_irq_teardown(pcie);\n }\n \n+static void mtk_pcie_shutdown(struct platform_device *pdev)\n+{\n+\tstruct mtk_gen3_pcie *pcie = platform_get_drvdata(pdev);\n+\n+\tmtk_pcie_devices_power_down(pcie);\n+\tmtk_pcie_power_down(pcie);\n+}\n+\n static void mtk_pcie_irq_save(struct mtk_gen3_pcie *pcie)\n {\n \tint i;\n@@ -1423,6 +1431,7 @@ MODULE_DEVICE_TABLE(of, mtk_pcie_of_match);\n static struct platform_driver mtk_pcie_driver = {\n \t.probe = mtk_pcie_probe,\n \t.remove = mtk_pcie_remove,\n+\t.shutdown = mtk_pcie_shutdown,\n \t.driver = {\n \t\t.name = \"mtk-pcie-gen3\",\n \t\t.of_match_table = mtk_pcie_of_match,\n","prefixes":["2/2"]}