[PATCH v4 0/4] PCI: mvebu: Slot support

From: Pali Rohár
Date: Mon Apr 11 2022 - 15:01:31 EST


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

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 | 96 ++++++++++++++++++-
drivers/pci/of.c | 70 ++++++++++++++
drivers/pci/pci.h | 15 +++
include/uapi/linux/pci_regs.h | 1 +
5 files changed, 183 insertions(+), 5 deletions(-)

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2.20.1