From patchwork Mon Apr 12 15:30:56 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ben Peled X-Patchwork-Id: 12198339 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-18.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id BC468C433B4 for ; Mon, 12 Apr 2021 15:31:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 99F1A61357 for ; Mon, 12 Apr 2021 15:31:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242946AbhDLPcP (ORCPT ); Mon, 12 Apr 2021 11:32:15 -0400 Received: from mx0a-0016f401.pphosted.com ([67.231.148.174]:51308 "EHLO mx0b-0016f401.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S242922AbhDLPcG (ORCPT ); Mon, 12 Apr 2021 11:32:06 -0400 Received: from pps.filterd (m0045849.ppops.net [127.0.0.1]) by mx0a-0016f401.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 13CFVLuf004634; Mon, 12 Apr 2021 08:31:28 -0700 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=marvell.com; h=from : to : cc : subject : date : message-id : in-reply-to : references : mime-version : content-type : content-transfer-encoding; s=pfpt0220; bh=+PPQ0jPh/9sOaCsxsOMINjzr4p98Q80wtAyKsrfihdg=; b=QT0Rq0AfzzjdHzptiCyVprRbVLpd0ykuA5BX3hxmLcRHLkJ1VumAvz/8d0nW8p4PQ2gN D8Nwiybkfa5PiU3A8j8wz0IyHXlyDcnNkWhBzVmS5c5Exev90o/Zq0HhtsyOHIC9nDRt TEiPfNb8uawLYZUod1f8RMA68GZNya4hWvuGfDcxkyCLrKdKSVSqYhHZjV8IvqzdGR1/ 1sjiv0lJB05pZZGfasMU6LUzurp0wWi7LTt2hSmg1ii+K5iyMQVn+FG7+obCQE04FOPY PA3qSZg5UxUnjBL/fwweJZhIJZfuw6uuNi4hn6nOZ6tzCeVUwnVZ3xrXroygmNpTqPR5 PQ== Received: from dc5-exch02.marvell.com ([199.233.59.182]) by mx0a-0016f401.pphosted.com with ESMTP id 37vcu99xrb-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-SHA384 bits=256 verify=NOT); Mon, 12 Apr 2021 08:31:28 -0700 Received: from SC-EXCH04.marvell.com (10.93.176.84) by DC5-EXCH02.marvell.com (10.69.176.39) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 12 Apr 2021 08:31:27 -0700 Received: from DC5-EXCH01.marvell.com (10.69.176.38) by SC-EXCH04.marvell.com (10.93.176.84) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Mon, 12 Apr 2021 08:31:27 -0700 Received: from maili.marvell.com (10.69.176.80) by DC5-EXCH01.marvell.com (10.69.176.38) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Mon, 12 Apr 2021 08:31:27 -0700 Received: from nw-bp.marvell.com (nw-bp.marvell.com [10.5.24.22]) by maili.marvell.com (Postfix) with ESMTP id F3DE73F7043; Mon, 12 Apr 2021 08:31:22 -0700 (PDT) From: To: , , CC: , , , , , , , , , , , , , , Subject: =?utf-8?q?=5B=E2=80=9DPATCH=E2=80=9D_5/5=5D_PCI=3A_armada8k=3A_add_?= =?utf-8?q?device_reset_to_link-down_handle?= Date: Mon, 12 Apr 2021 18:30:56 +0300 Message-ID: <1618241456-27200-6-git-send-email-bpeled@marvell.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1618241456-27200-1-git-send-email-bpeled@marvell.com> References: <1618241456-27200-1-git-send-email-bpeled@marvell.com> MIME-Version: 1.0 X-Proofpoint-GUID: YDRy_dGnY5Gad4s8J5DMr13f1F-C1kzp X-Proofpoint-ORIG-GUID: YDRy_dGnY5Gad4s8J5DMr13f1F-C1kzp X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.761 definitions=2021-04-12_11:2021-04-12,2021-04-12 signatures=0 Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org From: Ben Peled Added pcie reset via gpio support as described in the designware-pcie.txt DT binding document. In cases link down cause still exist in device. The device need to be reset to reestablish the link. If reset-gpio pin provided in the device tree, then the linkdown handle resets the device before reestablishing link. Signed-off-by: Ben Peled --- drivers/pci/controller/dwc/pcie-armada8k.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/pci/controller/dwc/pcie-armada8k.c b/drivers/pci/controller/dwc/pcie-armada8k.c index 4eb8607..83ac91e 100644 --- a/drivers/pci/controller/dwc/pcie-armada8k.c +++ b/drivers/pci/controller/dwc/pcie-armada8k.c @@ -24,6 +24,7 @@ #include #include #include +#include #include "pcie-designware.h" @@ -38,6 +39,7 @@ struct armada8k_pcie { struct regmap *sysctrl_base; u32 mac_rest_bitmask; struct work_struct recover_link_work; + enum of_gpio_flags flags; }; #define PCIE_VENDOR_REGS_OFFSET 0x8000