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[0/2] Fix some hotplug event issues

Message ID 20220921145434.21659-1-mario.limonciello@amd.com
Headers show
Series Fix some hotplug event issues | expand

Message

Mario Limonciello Sept. 21, 2022, 2:54 p.m. UTC
On AMD Pink Sardine it's been observed that if another CM has run before
the Linux CM that some registers may not match expectations which leads
to a non-functional hotplug for PCIe devices.

Explicitly set these registers that have been observed to cause problems
with hotplug to the defaults of the USB4 spec.

Mario Limonciello (2):
  thunderbolt: Explicitly reset plug events delay back to USB4 spec
    value
  thunderbolt: Explicitly enable lane adapter hotplug events at startup

 drivers/thunderbolt/switch.c  |  5 +++++
 drivers/thunderbolt/tb.h      |  1 +
 drivers/thunderbolt/tb_regs.h |  1 +
 drivers/thunderbolt/usb4.c    | 19 +++++++++++++++++++
 4 files changed, 26 insertions(+)