[v5,0/4] PCI: add 4x lane support for pci-j721e controllers

Message

Matt Ranostay Nov. 9, 2022, 8:25 a.m. UTC

Adding of dditional support to Cadence PCIe controller (i.e. pci-j721e.c)
for up to 4x lanes, and reworking of driver to define maximum lanes per
board configuration.

Changes from v1:
* Reworked 'PCI: j721e: Add PCIe 4x lane selection support' to not cause
  regressions on 1-2x lane platforms

Changes from v2:
* Correct dev_warn format string from %d to %u since lane count is a unsigned
  integer
* Update CC list

Changes from v3:
* Use the max_lanes setting per chip for the mask size required since bootloader
  could have set num_lanes to a higher value that the device tree which would leave
  in an undefined state
* Reorder patches do the previous change to not break bisect
* Remove line breaking for dev_warn to allow better grepping and since no strict
  80 columns anymore

Changes from v4:
* Correct invalid settings for j7200 PCIe RC + EP
* Add j784s4 configuration for selection of 4x lanes

Matt Ranostay (4):
  PCI: j721e: Add per platform maximum lane settings
  PCI: j721e: Add PCIe 4x lane selection support
  PCI: j721e: add j784s4 PCIe configuration
  PCI: j721e: Add warnings on num-lanes misconfiguration

 drivers/pci/controller/cadence/pci-j721e.c | 51 +++++++++++++++++++---
 1 file changed, 46 insertions(+), 5 deletions(-)