[PATCH v1 0/3] PCI: brcmstb: Clkreq# accomodations of downstream device

Jim Quinlan
2023-04-06T12:46:36Z

The current driver assumes the downstream devices can provide clkreq# for
ASPM. These commits accomodate devices w/ or w/o clkreq# and also handle
L1SS-capable devices.

The Raspian Linux folks have already been using a PCIe RC property
"brcm,enable-l1ss". These commits use the same property, in a
backward-compatible manner, and the implementaion adds more detail and also
automatically identifies devices w/o a clkreq# signal, i.e. most devices
plugged into an RPi CM4 IO board.

Jim Quinlan (3):
dt-bindings: PCI: brcmstb: Add two optional props
PCI: brcmstb: Clkreq# accomodations of downstream device
PCI: brcmstb: Allow setting the completion timeout

.../bindings/pci/brcm,stb-pcie.yaml | 12 +++
drivers/pci/controller/pcie-brcmstb.c | 93 +++++++++++++++++--
2 files changed, 95 insertions(+), 10 deletions(-)

base-commit: 99ddf2254febae9eab7fb0bcc02c5322243f5c49
--
2.17.1