[PATCH v6 0/9] PCI: rzg3s-host: Add PCIe hotplug support

[Claudiu Beznea]

From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>

Hi,

Series adds hotplug support for the rzg3s-host driver. This is a
continuation of the series John posted initially at [1]. Along with it,
prerequisites fixes and cleanup patches were added.

Thank you,
Claudiu

Changes in v6:
- addressed review comments as follows:
- added patch 7/9 ("PCI: rzg3s-host: Add helper to wait for link up")
- adopted the approach from pciehp and saved DSN of the connected
  device and, based on it, take decision if the bus devices need to be
  removed + rescanned
- in case of link up and !list_empty(&bus->devices) remove first the
  devices from the bus and re-scan (adopted the approach from pciehp)
- with the new approach cleared the link IRQ (before enabling it) in
  probe, and resume paths

Changes in v5:
- collected tags
- added patch 3/9 ("PCI: rzg3s-host: Select PCI_HOST_COMMON")
- addressed sashiko review comments (detailed in individual patches)

Changes in v4:
- simplified comments in patch 2/8
- kept only DL_UpDown changes in patch 7/8
- added patch 8/8 for the .reset_root_port() support

Changes in v3:
- added patches 1-6
- re-worked patch 7 to use struct pci_host_bridge::reset_root_port() API

[1] https://lore.kernel.org/all/20260630141720.3938514-1-john.madieu.xa@xxxxxxxxxxxxxx/

Claudiu Beznea (8):
  PCI: rzg3s-host: Follow hardware manual clock/reset initialization
    order
  PCI: rzg3s-host: Fix runtime PM handling in the NOIRQ suspend/resume
    phase
  PCI: rzg3s-host: Drop nop instructions
  PCI: rzg3s-host: Move host configuration code together
  PCI: rzg3s-host: Move suspend/resume code into dedicated functions
  PCI: rzg3s-host: Move IRQ domain setup code
  PCI: rzg3s-host: Add helper to wait for link up
  PCI: rzg3s-host: Add bridge::reset_root_port()

John Madieu (1):
  PCI: rzg3s-host: Re-enumerate the bus on PCIe link-state changes

 drivers/pci/controller/Kconfig           |   1 +
 drivers/pci/controller/pcie-rzg3s-host.c | 952 ++++++++++++++++-------
 2 files changed, 673 insertions(+), 280 deletions(-)

-- 
2.43.0