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 7E91FEBFD08 for ; Mon, 13 Apr 2026 07:14:30 +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-Type: Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date :Subject:CC:To:From:Reply-To:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=xfFRo0UHQusuMDmGKevH0yFYeubiKUgkDDCMUWqjD1Y=; b=EJx7QLHfVQK9gJ3zKg2TH1l5Zw oH9emv/2VY7Wj0paOGWQE12GUsiGbczad9sbdr/P1/O5uOb5gANL7a7wz9fNRQUK0IGNn/4PFmXzM IcXXx+8/ECWS0E6e8le3uCoLwXs8P/U3WT2urwqoiZ92wFdB3jmcJlzQ/vKIFk4zvQwNASdW9ZgZF +FkQahGSfbX7caxyg4/Ve72UeGs9Sdv3MXy3kQa/6OkAKJfpNCfJMXpI8rTMoTfoWi27EHjHD4hdf GxqKFV8dUThQS6YVpZjsIa+lDH0NyZ05XaSUekt5ISvQq8YWWR8aICkKkydUHWAUDkZwsMqk2W/H6 rxUAxywg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCBV7-0000000F7R7-2BKS; Mon, 13 Apr 2026 07:14:29 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wCBUx-0000000F7OL-02db for linux-mediatek@lists.infradead.org; Mon, 13 Apr 2026 07:14:27 +0000 X-UUID: 6003bd16370811f1a6de359d7043e138-20260413 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Type:Content-Transfer-Encoding:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=xfFRo0UHQusuMDmGKevH0yFYeubiKUgkDDCMUWqjD1Y=; b=bINiSEyWMudMogYpEeJHY9RajiFIFstwyJMpLFkiDDBafhPJ8jpXAjnTr6MMicU/oXl3yAnkLmtRmmV8DCwLVyqIiJzCSL9ZnQ/ny7wu5yycwMaybldajO0j8sGWeUb68vlT+GNiCZ1PnzEFOhuwT9HJnPVzCksf1P8r3khA7+o=; X-CID-P-RULE: Release_Ham X-CID-O-INFO: VERSION:1.3.12,REQID:b41f1963-fafe-4b28-9d95-de0e9ba9ab60,IP:0,U RL:0,TC:0,Content:-5,EDM:0,RT:0,SF:0,FILE:0,BULK:0,RULE:Release_Ham,ACTION :release,TS:-5 X-CID-META: VersionHash:e7bac3a,CLOUDID:91d5cb24-cb5c-4236-a89a-9a7fb20c9bc4,B ulkID:nil,BulkQuantity:0,Recheck:0,SF:81|82|102|836|865|888|898,TC:-5,Cont ent:0|15|50,EDM:-3,IP:nil,URL:0,File:130,RT:0,Bulk:nil,QS:nil,BEC:-1,COL:0 ,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 X-UUID: 6003bd16370811f1a6de359d7043e138-20260413 Received: from mtkmbs11n1.mediatek.inc [(172.21.101.185)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-GCM-SHA384 256/256) with ESMTP id 2054130728; Mon, 13 Apr 2026 00:14:13 -0700 Received: from mtkmbs11n1.mediatek.inc (172.21.101.185) by MTKMBS14N1.mediatek.inc (172.21.101.75) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.2562.29; Mon, 13 Apr 2026 15:14:10 +0800 Received: from mhfsdcap04.gcn.mediatek.inc (10.17.3.154) by mtkmbs11n1.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.2.2562.29 via Frontend Transport; Mon, 13 Apr 2026 15:14:10 +0800 From: Jian Yang To: Matthias Brugger , AngeloGioacchino Del Regno , Ryder Lee , Lorenzo Pieralisi , =?UTF-8?q?Krzysztof=20Wilczy=C5=84ski?= , Manivannan Sadhasivam , Rob Herring , Bjorn Helgaas CC: , , , , , , Subject: [PATCH 2/2] PCI: mediatek-gen3: Add a shutdown callback to cotnrol 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> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260413_001421_201847_92B67B57 X-CRM114-Status: GOOD ( 11.56 ) X-BeenThere: linux-mediatek@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-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Add a shutdown callback to control the timing of PERST# and power during system shutdown, ensuring that the PERST#, as required by the PCIe CEM specification, is active before the power on connector is removed. Signed-off-by: Jian Yang --- drivers/pci/controller/pcie-mediatek-gen3.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/pci/controller/pcie-mediatek-gen3.c b/drivers/pci/controller/pcie-mediatek-gen3.c index 58ba1aa35a22..4915979968b9 100644 --- a/drivers/pci/controller/pcie-mediatek-gen3.c +++ b/drivers/pci/controller/pcie-mediatek-gen3.c @@ -1285,6 +1285,14 @@ static void mtk_pcie_remove(struct platform_device *pdev) mtk_pcie_irq_teardown(pcie); } +static void mtk_pcie_shutdown(struct platform_device *pdev) +{ + struct mtk_gen3_pcie *pcie = platform_get_drvdata(pdev); + + mtk_pcie_devices_power_down(pcie); + mtk_pcie_power_down(pcie); +} + static void mtk_pcie_irq_save(struct mtk_gen3_pcie *pcie) { int i; @@ -1423,6 +1431,7 @@ MODULE_DEVICE_TABLE(of, mtk_pcie_of_match); static struct platform_driver mtk_pcie_driver = { .probe = mtk_pcie_probe, .remove = mtk_pcie_remove, + .shutdown = mtk_pcie_shutdown, .driver = { .name = "mtk-pcie-gen3", .of_match_table = mtk_pcie_of_match, -- 2.45.2