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Code Issues Releases Packages Activity
linux/drivers/pci/controller
History
Niklas Cassel 7259d9d6f0 PCI: dwc: Ensure that dw_pcie_wait_for_link() waits 100 ms after link up 
commit 80dc18a0cb upstream.

As per PCIe r6.0, sec 6.6.1, a Downstream Port that supports Link speeds
greater than 5.0 GT/s, software must wait a minimum of 100 ms after Link
training completes before sending a Configuration Request.

Add this delay in dw_pcie_wait_for_link(), after the link is reported as
up. The delay will only be performed in the success case where the link
came up.

DWC glue drivers that have a link up IRQ (drivers that set
use_linkup_irq = true) do not call dw_pcie_wait_for_link(), instead they
perform this delay in their threaded link up IRQ handler.

Signed-off-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Reviewed-by: Damien Le Moal <dlemoal@kernel.org>
Reviewed-by: Wilfred Mallawa <wilfred.mallawa@wdc.com>
Link: https://patch.msgid.link/20250625102347.1205584-14-cassel@kernel.org
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2025-09-04 15:31:56 +02:00
..
cadence PCI: cadence-ep: Correct PBA offset in .set_msix() callback 2025-06-27 11:11:25 +01:00
dwc PCI: dwc: Ensure that dw_pcie_wait_for_link() waits 100 ms after link up 2025-09-04 15:31:56 +02:00
mobiveil PCI: mobiveil: Silence 'set affinity failed' warning 2024-07-29 12:46:35 -05:00
plda PCI: Rename PCIE_RESET_CONFIG_DEVICE_WAIT_MS to PCIE_RESET_CONFIG_WAIT_MS 2025-09-04 15:31:55 +02:00
Kconfig PCI: mediatek-gen3: Add Airoha EN7581 support 2024-09-03 13:37:41 +00:00
Makefile PCI: microchip: Move pcie-microchip-host.c to PLDA directory 2024-05-28 11:15:28 -05:00
pci-aardvark.c Merge branch 'pci/controller/affinity' 2024-09-19 14:25:28 -05:00
pci-ftpci100.c PCI: Explicitly include correct DT includes 2023-07-18 14:33:17 -05:00
pci-host-common.c Merge branch 'pci/misc' 2024-07-19 10:10:33 -05:00
pci-host-generic.c PCI: controller: Add missing MODULE_DESCRIPTION() macros 2024-07-08 08:36:14 +00:00
pci-hyperv-intf.c PCI: hv: Add a Hyper-V PCI interface driver for software backchannel interface 2019-08-22 00:25:12 -07:00
pci-hyperv.c PCI: hv: Return zero, not garbage, when reading PCI_INTERRUPT_PIN 2024-07-03 21:11:14 +00:00
pci-ixp4xx.c PCI: Explicitly include correct DT includes 2023-07-18 14:33:17 -05:00
pci-loongson.c PCI: loongson: Enable MSI in LS7A Root Complex 2024-07-19 10:07:01 -05:00
pci-mvebu.c PCI: mvebu: Use FIELD_PREP() with Link Width 2023-10-10 15:00:52 -05:00
pci-rcar-gen2.c PCI: rcar-gen2: Use devm_platform_get_and_ioremap_resource() 2023-07-13 18:12:35 +00:00
pci-tegra.c PCI: tegra: Silence 'set affinity failed' warning 2024-07-29 12:46:35 -05:00
pci-thunder-ecam.c PCI: thunder: Drop error data fabrication when config read fails 2021-11-18 13:39:32 -06:00
pci-thunder-pem.c PCI: thunder: Drop error data fabrication when config read fails 2021-11-18 13:39:32 -06:00
pci-v3-semi.c Merge branch 'pci/misc' 2023-08-29 11:03:57 -05:00
pci-versatile.c PCI: Remove MODULE_LICENSE so boolean drivers don't look like modules 2023-02-17 08:47:58 -06:00
pci-xgene-msi.c PCI: xgene-msi: Use devm_platform_get_and_ioremap_resource() 2023-07-13 18:12:36 +00:00
pci-xgene.c PCI: Rename CRS Completion Status to RRS 2024-09-10 19:52:30 -05:00
pcie-altera-msi.c PCI: altera-msi: Silence 'set affinity failed' warning 2024-07-29 12:46:35 -05:00
pcie-altera.c PCI: altera: Replace TLP_REQ_ID() with macro PCI_DEVID() 2024-09-06 06:32:23 +00:00
pcie-apple.c PCI: apple: Set only available ports up 2025-07-06 11:01:37 +02:00
pcie-brcmstb.c PCI: brcmstb: Add a softdep to MIP MSI-X driver 2025-05-29 11:02:34 +02:00
pcie-hisi-error.c PCI: hisi-error: Convert to platform remove callback returning void 2023-06-24 14:12:13 +00:00
pcie-iproc-bcma.c PCI: Add defines for normal and subtractive PCI bridges 2022-02-17 15:29:35 -06:00
pcie-iproc-msi.c PCI: iproc: Use of_property_read_bool() for boolean properties 2023-07-13 18:09:24 +00:00
pcie-iproc-platform.c PCI: iproc: Fix -Wvoid-pointer-to-enum-cast warning 2024-01-06 08:06:50 +00:00
pcie-iproc.c PCI: Rename CRS Completion Status to RRS 2024-09-10 19:52:30 -05:00
pcie-iproc.h PCI: iproc: Convert to platform remove callback returning void 2023-06-24 14:12:36 +00:00
pcie-mediatek-gen3.c Merge branch 'pci/controller/mediatek-gen3' 2024-09-19 14:25:32 -05:00
pcie-mediatek.c Merge branch 'pci/controller/mediatek' 2024-09-19 14:25:31 -05:00
pcie-mt7621.c PCI: controller: Add missing MODULE_DESCRIPTION() macros 2024-07-08 08:36:14 +00:00
pcie-rcar-ep.c PCI: rcar-ep: Fix incorrect variable used when calling devm_request_mem_region() 2025-02-08 09:57:55 +01:00
pcie-rcar-host.c PCI: rcar-host: Silence 'set affinity failed' warning 2024-07-29 12:46:35 -05:00
pcie-rcar.c PCI: rcar: Fix calculating mask for PCIEPAMR register 2020-05-11 11:29:48 +01:00
pcie-rcar.h PCI: rcar: Avoid defines prefixed with CONFIG 2023-03-10 13:34:27 +01:00
pcie-rockchip-ep.c PCI: rockchip-ep: Fix address translation unit programming 2024-12-09 10:41:09 +01:00
pcie-rockchip-host.c PCI: rockchip: Set Target Link Speed to 5.0 GT/s before retraining 2025-08-28 16:31:07 +02:00
pcie-rockchip.c PCI: rockchip: Use GPIOD_OUT_LOW flag while requesting ep_gpio 2024-07-09 18:28:33 -05:00
pcie-rockchip.h PCI: rockchip: Use standard PCIe definitions 2025-08-28 16:31:07 +02:00
pcie-xilinx-common.h PCI: xilinx-xdma: Add Xilinx XDMA Root Port driver 2023-10-26 15:02:02 +00:00
pcie-xilinx-cpm.c PCI: xilinx-cpm: Fix IRQ domain leak in error path of probe 2025-04-10 14:39:16 +02:00
pcie-xilinx-dma-pl.c Merge branch 'pci/controller/xilinx' 2024-09-19 14:25:33 -05:00
pcie-xilinx-nwl.c Merge branch 'pci/controller/xilinx' 2024-09-19 14:25:33 -05:00
pcie-xilinx.c PCI: xilinx: Silence 'set affinity failed' warning 2024-08-06 12:52:17 -05:00
vmd.c PCI: vmd: Disable MSI remapping bypass under Xen 2025-05-29 11:02:09 +02:00