Message ID | 1681877994-16487-4-git-send-email-lizhi.hou@amd.com |
---|---|
State | New |
Headers | show
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Tue, 18 Apr 2023 23:20:30 -0500 Received: from xsjlizhih40.xilinx.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server id 15.1.2375.34 via Frontend Transport; Tue, 18 Apr 2023 23:20:29 -0500 From: Lizhi Hou <lizhi.hou@amd.com> To: <linux-pci@vger.kernel.org>, <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>, <robh@kernel.org>, <frowand.list@gmail.com>, <helgaas@kernel.org> CC: Lizhi Hou <lizhi.hou@amd.com>, <clement.leger@bootlin.com>, <max.zhen@amd.com>, <sonal.santan@amd.com>, <larry.liu@amd.com>, <brian.xu@amd.com>, <stefano.stabellini@xilinx.com>, <trix@redhat.com> Subject: [PATCH V8 3/3] PCI: Add PCI quirks to generate device tree node for Xilinx Alveo U50 Date: Tue, 18 Apr 2023 21:19:54 -0700 Message-ID: <1681877994-16487-4-git-send-email-lizhi.hou@amd.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1681877994-16487-1-git-send-email-lizhi.hou@amd.com> References: <1681877994-16487-1-git-send-email-lizhi.hou@amd.com> MIME-Version: 1.0 Content-Type: text/plain X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: CO1NAM11FT095:EE_|SN7PR12MB8602:EE_ X-MS-Office365-Filtering-Correlation-Id: 440221b8-7dc0-4867-415e-08db408d6bd6 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; 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Generate device tree node for pci devices
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expand
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diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c index 44cab813bf95..35745e7b457a 100644 --- a/drivers/pci/quirks.c +++ b/drivers/pci/quirks.c @@ -6023,3 +6023,14 @@ DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2d, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a2f, dpc_log_size); DECLARE_PCI_FIXUP_HEADER(PCI_VENDOR_ID_INTEL, 0x9a31, dpc_log_size); #endif + +/* + * For PCI device which have multiple downstream devices, its driver may use + * a flattened device tree to describe the downstream devices. + * To overlay the flattened device tree, the PCI device and all its ancestor + * devices need to have device tree nodes on system base device tree. Thus, + * before driver probing, it might need to add a device tree node as the final + * fixup. + */ +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5020, of_pci_make_dev_node); +DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_XILINX, 0x5021, of_pci_make_dev_node);
The Xilinx Alveo U50 PCI card exposes multiple hardware peripherals on its PCI BAR. The card firmware provides a flattened device tree to describe the hardware peripherals on its BARs. This allows U50 driver to load the flattened device tree and generate the device tree node for hardware peripherals underneath. To generate device tree node for U50 card, added PCI quirks to call of_pci_make_dev_node() for U50. Signed-off-by: Lizhi Hou <lizhi.hou@amd.com> --- drivers/pci/quirks.c | 11 +++++++++++ 1 file changed, 11 insertions(+)