[v5,0/4] PCI: mvebu: Slot support

Message

Pali Rohár April 12, 2022, 9:49 a.m. UTC

This patch series add slot support to pci-mvebu.c driver.

Changes in v5:
* Fix compile error due to wrong patch rebasing

Changes in v4:
* Set 239 W when DT slot-power-limit-milliwatt is between 239 W and 250 W
* Fix returning power limit value

Changes in v3:
* Set 600 W when DT slot-power-limit-milliwatt > 600 W

Changes in v2:
* Dropped patch with PCI_EXP_SLTCAP_*_SHIFT macros as it is not needed anymore
* Dropped patch "ARM: dts: turris-omnia: Set PCIe slot-power-limit-milliwatt properties" which was applied
* Added support for PCIe 6.0 slot power limit encodings
* Round down slot power limit value
* Fix handling of slot power limit with scale x1.0 (0x00 value)
* Use FIELD_PREP instead of _SHIFT macros
* Changed commit message to Bjorn's suggestion
* Changed comments in the code to match PCIe spec
* Preserve user settings of PCI_EXP_SLTCTL_ASPL_DISABLE bit

Pali Rohár (4):
  PCI: Add PCI_EXP_SLTCTL_ASPL_DISABLE macro
  dt-bindings: Add 'slot-power-limit-milliwatt' PCIe port property
  PCI: Add function for parsing 'slot-power-limit-milliwatt' DT property
  PCI: mvebu: Add support for sending Set_Slot_Power_Limit message

 Documentation/devicetree/bindings/pci/pci.txt |  6 ++
 drivers/pci/controller/pci-mvebu.c            | 97 ++++++++++++++++++-
 drivers/pci/of.c                              | 70 +++++++++++++
 drivers/pci/pci.h                             | 15 +++
 include/uapi/linux/pci_regs.h                 |  1 +
 5 files changed, 184 insertions(+), 5 deletions(-)

Comments

Lorenzo Pieralisi April 25, 2022, 9:59 a.m. UTC | #1

On Tue, 12 Apr 2022 11:49:42 +0200, Pali Rohár wrote:
> This patch series add slot support to pci-mvebu.c driver.
> 
> Changes in v5:
> * Fix compile error due to wrong patch rebasing
> 
> Changes in v4:
> * Set 239 W when DT slot-power-limit-milliwatt is between 239 W and 250 W
> * Fix returning power limit value
> 
> [...]

Dropped patch [2] since it is not needed.

Applied to pci/power-slot, thanks!

[1/4] PCI: Add PCI_EXP_SLTCTL_ASPL_DISABLE macro
      https://git.kernel.org/lpieralisi/pci/c/e8e7fbb6a3
[3/4] PCI: Add function for parsing 'slot-power-limit-milliwatt' DT property
      https://git.kernel.org/lpieralisi/pci/c/35662423fb
[4/4] PCI: mvebu: Add support for sending Set_Slot_Power_Limit message
      https://git.kernel.org/lpieralisi/pci/c/0d5b8c2985

Thanks,
Lorenzo