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45514f78c6
linux/drivers/pci/controller
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Richard Zhu 45514f78c6 PCI: imx6: Assert i.MX8MM CLKREQ# even if no device present 
The CLKREQ# signal is an open drain, active low signal that is driven
low by the remote Endpoint device. But it might not be driven low if no
Endpoint device is connected.

On i.MX8MM PCIe, phy_init() may fail and system boot may hang if no
Endpoint is connected to assert CLKREQ#.

Handle this as on i.MX8MQ, where we explicitly assert CLKREQ# so the
PHY can be initialized.

Link: https://lore.kernel.org/r/1645672013-8949-1-git-send-email-hongxing.zhu@nxp.com
Fixes: 178e244cb6 ("PCI: imx: Add the imx8mm pcie support")
Signed-off-by: Richard Zhu <hongxing.zhu@nxp.com>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Reviewed-by: Lucas Stach <l.stach@pengutronix.de>
2022-03-17 08:59:59 +00:00
..
cadence Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
dwc PCI: imx6: Assert i.MX8MM CLKREQ# even if no device present 2022-03-17 08:59:59 +00:00
mobiveil PCI: ls-gen4: Rename ls_pcie_g4 to ls_g4_pcie 2022-01-03 15:01:59 -06:00
Kconfig pci-v5.17-changes 2022-01-16 08:08:11 +02:00
Makefile Merge branch 'pci/host/mt7621' 2021-11-05 11:28:51 -05:00
pci-aardvark.c pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pci-ftpci100.c PCI: Bulk conversion to generic_handle_domain_irq() 2021-08-02 11:53:05 -05:00
pci-host-common.c PCI/MSI: Make pci_host_common_probe() declare its reliance on MSI domains 2021-04-20 14:11:22 +01:00
pci-host-generic.c PCI: Unify ECAM constants in native PCI Express drivers 2020-12-10 14:55:49 -06:00
pci-hyperv-intf.c
pci-hyperv.c pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pci-ixp4xx.c ARM: ixp4xx: fix building both pci drivers 2021-08-12 23:10:09 +02:00
pci-loongson.c PCI: loongson: Simplify loongson_pci_probe() return expression 2020-10-02 12:56:31 +01:00
pci-mvebu.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00
pci-rcar-gen2.c PCI: rcar-gen2: Rename rcar_pci_priv to rcar_pci 2022-01-03 15:05:28 -06:00
pci-tegra.c Merge branch 'remotes/lorenzo/pci/tegra' 2021-09-02 14:56:50 -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 PCI: v3-semi: Remove unneeded break 2020-10-20 10:59:55 -05:00
pci-versatile.c
pci-xgene-msi.c PCI: xgene-msi: Use bitmap_zalloc() when applicable 2021-11-29 17:29:15 +00:00
pci-xgene.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-altera-msi.c PCI: Bulk conversion to generic_handle_domain_irq() 2021-08-02 11:53:05 -05:00
pcie-altera.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-apple.c pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pcie-brcmstb.c pci-v5.17-changes 2022-01-16 08:08:11 +02:00
pcie-hisi-error.c PCI: hip: Add handling of HiSilicon HIP PCIe controller errors 2020-09-16 10:30:42 +01:00
pcie-iproc-bcma.c PCI: iproc: Rename iproc_pcie_bcma_ to iproc_bcma_pcie_ 2022-01-03 15:01:49 -06:00
pcie-iproc-msi.c PCI: Bulk conversion to generic_handle_domain_irq() 2021-08-02 11:53:05 -05:00
pcie-iproc-platform.c PCI: iproc: Rename iproc_pcie_pltfm_ to iproc_pltfm_pcie_ 2022-01-03 15:01:53 -06:00
pcie-iproc.c PCI: iproc: Drop error data fabrication when config read fails 2021-11-18 13:39:52 -06:00
pcie-iproc.h PCI: Fix kernel-doc formatting 2021-07-06 10:37:46 -05:00
pcie-mediatek-gen3.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-mediatek.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00
pcie-microchip-host.c PCI: microchip: Rename mc_port to mc_pcie 2022-01-03 15:02:08 -06:00
pcie-mt7621.c Merge branch 'pci/driver-cleanup' 2022-01-13 09:57:53 -06:00
pcie-rcar-ep.c PCI: rcar-ep: Remove unneeded includes 2021-10-08 09:41:38 -05:00
pcie-rcar-host.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00
pcie-rcar.c
pcie-rcar.h PCI: rcar: Add L1 link state fix into data abort hook 2021-08-16 14:51:30 +01:00
pcie-rockchip-ep.c PCI: endpoint: Add virtual function number in pci_epc ops 2021-08-19 14:13:28 +01:00
pcie-rockchip-host.c PCI: rockchip-host: Drop error data fabrication when config read fails 2021-11-18 13:41:25 -06:00
pcie-rockchip.c PCI: rockchip: Make 'ep-gpios' DT property optional 2021-02-23 14:23:50 -06:00
pcie-rockchip.h PCI: Unify ECAM constants in native PCI Express drivers 2020-12-10 14:55:49 -06:00
pcie-xilinx-cpm.c PCI: xilinx-cpm: Rename xilinx_cpm_pcie_port to xilinx_cpm_pcie 2022-01-03 15:05:28 -06:00
pcie-xilinx-nwl.c PCI: xilinx-nwl: Simplify code and fix a memory leak 2021-12-01 09:26:51 +00:00
pcie-xilinx.c PCI: xilinx: Rename xilinx_pcie_port to xilinx_pcie 2022-01-03 15:05:28 -06:00
vmd.c Merge branch 'pci/errors' 2022-01-13 09:57:52 -06:00