Ben Dooks a382c757ec PCI: fu740: Force 2.5GT/s for initial device probe ...

The fu740 PCIe core does not probe any devices on the SiFive Unmatched
board without this fix (or having U-Boot explicitly start the PCIe via
either boot-script or user command). The fix is to start the link at
2.5GT/s speeds and once the link is up then change the maximum speed back
to the default.

The U-Boot driver claims to set the link-speed to 2.5GT/s to get the probe
to work (and U-Boot does print link up at 2.5GT/s) in the following code:
https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/pci/pcie_dw_sifive.c?id=v2022.01#L271

Link: https://lore.kernel.org/r/20220318152430.526320-1-ben.dooks@codethink.co.uk
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Palmer Dabbelt <palmer@rivosinc.com>

2022-03-21 15:19:26 -05:00

..

controller

PCI: fu740: Force 2.5GT/s for initial device probe

2022-03-21 15:19:26 -05:00

endpoint

Merge branch 'pci/misc'

2022-01-13 09:57:52 -06:00

hotplug

Merge branch 'pci/errors'

2022-01-13 09:57:52 -06:00

msi

PCI/MSI: Unbreak pci_irq_get_affinity()

2021-12-18 20:33:21 +01:00

pcie

Merge branch 'pci/errors'

2022-01-13 09:57:52 -06:00

switch

PCI/switchtec: Declare local state_names[] as static

2021-11-19 12:14:02 -06:00

access.c

PCI: Use PCI_ERROR_RESPONSE to identify config read errors

2021-11-18 14:31:43 -06:00

ats.c

PCI: Allow PASID on fake PCIe devices without TLP prefixes

2021-08-26 14:21:42 -05:00

bus.c

…

ecam.c

PCI: Dynamically map ECAM regions

2021-06-16 17:20:40 -05:00

host-bridge.c

PCI: VMD: ACPI: Make ACPI companion lookup work for VMD bus

2021-09-02 17:59:58 +02:00

iov.c

Revert "PCI: Use to_pci_driver() instead of pci_dev->driver"

2021-11-11 13:36:22 -06:00

irq.c

…

Kconfig

PCI: hv: Add arm64 Hyper-V vPCI support

2022-01-12 08:24:29 -06:00

Makefile

PCI/MSI: Move code into a separate directory

2021-12-09 11:52:22 +01:00

mmap.c

…

of.c

PCI: Correct misspelled words

2022-01-07 20:43:23 -06:00

p2pdma.c

Merge tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2022-01-16 08:08:11 +02:00

pci-acpi.c

Merge branch 'pm-pci'

2021-11-02 19:06:30 +01:00

pci-bridge-emul.c

Merge branch 'remotes/lorenzo/pci/bridge-emul'

2022-01-13 09:57:51 -06:00

pci-bridge-emul.h

PCI: pci-bridge-emul: Add PCIe Root Capabilities Register

2021-08-05 10:51:49 +01:00

pci-driver.c

Revert "PCI: Use to_pci_driver() instead of pci_dev->driver"

2021-11-11 13:36:22 -06:00

pci-label.c

PCI/sysfs: Use sysfs_emit() and sysfs_emit_at() in "show" functions

2021-06-03 22:14:47 -05:00

pci-mid.c

PCI: PM: Do not use pci_platform_pm_ops for Intel MID PM

2021-09-27 17:13:21 +02:00

pci-pf-stub.c

PCI/IOV: Simplify pci-pf-stub with module_pci_driver()

2020-09-17 12:40:20 -05:00

pci-stub.c

…

pci-sysfs.c

PCI/sysfs: Use pci_irq_vector()

2021-12-09 11:52:21 +01:00

pci.c

Merge tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2022-01-16 08:08:11 +02:00

pci.h

Merge tag 'pci-v5.16-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2021-11-06 14:36:12 -07:00

probe.c

Merge tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2022-01-16 08:08:11 +02:00

proc.c

proc: remove PDE_DATA() completely

2022-01-22 08:33:37 +02:00

quirks.c

Merge tag 'pci-v5.17-changes' of git://git.kernel.org/pub/scm/linux/kernel/git/helgaas/pci

2022-01-16 08:08:11 +02:00

remove.c

PCI: Remove reset_fn field from pci_dev

2021-08-17 17:44:38 -05:00

rom.c

PCI: Prefer 'unsigned int' over bare 'unsigned'

2021-10-27 13:41:22 -05:00

search.c

PCI: Remove WARN_ON(in_interrupt())

2021-02-10 16:46:29 -06:00

setup-bus.c

PCI: Prefer 'unsigned int' over bare 'unsigned'

2021-10-27 13:41:22 -05:00

setup-irq.c

PCI: Tidy comments

2021-09-28 13:43:17 -05:00

setup-res.c

PCI: Work around Intel I210 ROM BAR overlap defect

2022-01-11 09:33:10 -06:00

slot.c

PCI/sysfs: Use default_groups in kobj_type for slot attrs

2021-12-29 13:42:04 -06:00

syscall.c

PCI: Return int from pciconfig_read() syscall

2021-08-03 16:55:48 -05:00

vc.c

PCI: Fix kerneldoc warnings

2020-08-05 18:23:14 -05:00

vpd.c

PCI/VPD: Use pci_read_vpd_any() in pci_vpd_size()

2021-10-25 19:12:23 -05:00

xen-pcifront.c

xen/pcifront: Rework MSI handling

2021-12-16 22:22:18 +01:00