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b=EJoPDz3W+gm/PXR3WHK7NOqucyZ9g6CWSwAoDMCrZNjRijBKOcRWuu632WMcwgXC0JthMRt9SWZYBEKjHI0hZ4R8S1qUaJc29C3URwfcUOY2i4/PywjyDYIjsupDyx7j6vuMwuLWKswZQMAEmr5s4t923+1DY3gNck9L+iQImis= Authentication-Results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=nxp.com; Received: from AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) by DB8PR04MB7161.eurprd04.prod.outlook.com (2603:10a6:10:124::7) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.6652.28; Wed, 9 Aug 2023 15:36:09 +0000 Received: from AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::d0d5:3604:98da:20b1]) by AM6PR04MB4838.eurprd04.prod.outlook.com ([fe80::d0d5:3604:98da:20b1%7]) with mapi id 15.20.6652.028; Wed, 9 Aug 2023 15:36:09 +0000 From: Frank Li To: helgaas@kernel.org Cc: Frank.li@nxp.com, bhelgaas@google.com, devicetree@vger.kernel.org, gustavo.pimentel@synopsys.com, imx@lists.linux.dev, kw@linux.com, leoyang.li@nxp.com, linux-arm-kernel@lists.infradead.org, linux-imx@nxp.com, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org, lorenzo.pieralisi@arm.com, lpieralisi@kernel.org, mani@kernel.org, manivannan.sadhasivam@linaro.org, minghuan.lian@nxp.com, mingkai.hu@nxp.com, robh+dt@kernel.org, roy.zang@nxp.com, shawnguo@kernel.org, zhiqiang.hou@nxp.com Subject: [PATCH v11 1/3] PCI: Add macro PCIE_PME_TO_L2_TIMEOUT_US Date: Wed, 9 Aug 2023 11:35:38 -0400 Message-Id: <20230809153540.834653-2-Frank.Li@nxp.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230809153540.834653-1-Frank.Li@nxp.com> References: <20230809153540.834653-1-Frank.Li@nxp.com> Content-Transfer-Encoding: quoted-printable X-ClientProxiedBy: BY5PR04CA0018.namprd04.prod.outlook.com (2603:10b6:a03:1d0::28) To AM6PR04MB4838.eurprd04.prod.outlook.com (2603:10a6:20b:4::16) MIME-Version: 1.0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: AM6PR04MB4838:EE_|DB8PR04MB7161:EE_ X-MS-Office365-Filtering-Correlation-Id: b42a0b46-4c3b-4dd8-321f-08db98ee5a40 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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charset="utf-8" Introduce the PCIE_PME_TO_L2_TIMEOUT_US macro to facilitate checking the L2 ready timeout in the PCI subsystem. Acked-by: Manivannan Sadhasivam Signed-off-by: Frank Li Acked-by: Bjorn Helgaas --- drivers/pci/pci.h | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/pci/pci.h b/drivers/pci/pci.h index a4c3974340576..da8156663c825 100644 --- a/drivers/pci/pci.h +++ b/drivers/pci/pci.h @@ -13,6 +13,12 @@ =20 #define PCIE_LINK_RETRAIN_TIMEOUT_MS 1000 =20 +/* + * PCIe r6.0, sec 5.3.3.2.1 + * Recommends 1ms to 10ms timeout to check L2 ready. + */ +#define PCIE_PME_TO_L2_TIMEOUT_US 10000 + extern const unsigned char pcie_link_speed[]; extern bool pci_early_dump; =20 --=20 2.34.1