Revert "PCI: brcmstb: Add control of subdevice voltage regulators"
authorBjorn Helgaas <bhelgaas@google.com>
Wed, 11 May 2022 20:18:54 +0000 (15:18 -0500)
committerBjorn Helgaas <bhelgaas@google.com>
Tue, 31 May 2022 20:06:19 +0000 (15:06 -0500)
commit212942609d83b591f5a2f2691df122d13aa3a87d
treef662cf5975e3501f9763e6a93ad9fac20b26eca9
parent7894025c783ca36394d3afe49c8cfb4c830b82fe
Revert "PCI: brcmstb: Add control of subdevice voltage regulators"

This reverts commit 93e41f3fca3d4a0f927b784012338c37f80a8a80.

This is part of a revert of the following commits:

  11ed8b8624b8 ("PCI: brcmstb: Do not turn off WOL regulators on suspend")
  93e41f3fca3d ("PCI: brcmstb: Add control of subdevice voltage regulators")
  67211aadcb4b ("PCI: brcmstb: Add mechanism to turn on subdev regulators")
  830aa6f29f07 ("PCI: brcmstb: Split brcm_pcie_setup() into two funcs")

Cyril reported that 830aa6f29f07 ("PCI: brcmstb: Split brcm_pcie_setup()
into two funcs"), which appeared in v5.17-rc1, broke booting on the
Raspberry Pi Compute Module 4.  Apparently 830aa6f29f07 panics with an
Asynchronous SError Interrupt, and after further commits here is a black
screen on HDMI and no output on the serial console.

This does not seem to affect the Raspberry Pi 4 B.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=215925
Link: https://lore.kernel.org/r/20220511201856.808690-3-helgaas@kernel.org
Reported-by: Cyril Brulebois <kibi@debian.org>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
drivers/pci/controller/pcie-brcmstb.c