[v8,00/13] Tegra XHCI controller ELPG support

Message

Thierry Reding March 25, 2021, 4:40 p.m. UTC

From: Thierry Reding <[e-mail]>

Tegra XHCI controler can be placed in ELPG (Engine Level PowerGated)
state for power saving when all of the connected USB devices are in
suspended state. This patch series includes clk, phy and pmc changes
that are required for properly place controller in ELPG and bring
controller out of ELPG.

I've rebased this on v5.12-rc2 and fixed two minor issues that
checkpatch had pointed out. One of the patches compared to v7 was
already merged into v5.12, so that rebased out.

Greg, you had previously indicated[0] that you'd be willing for me to
take the USB patches through the Tegra tree to resolve the complicated
dependencies within this series, but I don't think you ever gave a
formal Acked-by. Should I take your comments to be equivalent and just
add them to the USB patches?

Vinod, as discussed earlier, please take a look and provide an Acked-by
if you're okay with me taking this through the Tegra tree for v5.13.

Thanks,
Thierry

[0]: https://lore.kernel.org/linux-tegra/[e-mail]/

JC Kuo (13):
  clk: tegra: Add PLLE HW power sequencer control
  clk: tegra: Don't enable PLLE HW sequencer at init
  phy: tegra: xusb: Move usb3 port init for Tegra210
  phy: tegra: xusb: Rearrange UPHY init on Tegra210
  phy: tegra: xusb: Add Tegra210 lane_iddq operation
  phy: tegra: xusb: Add sleepwalk and suspend/resume
  soc/tegra: pmc: Provide USB sleepwalk register map
  dt-bindings: phy: tegra-xusb: Add nvidia,pmc prop
  phy: tegra: xusb: Add wake/sleepwalk for Tegra210
  phy: tegra: xusb: Tegra210 host mode VBUS control
  phy: tegra: xusb: Add wake/sleepwalk for Tegra186
  usb: host: xhci-tegra: Unlink power domain devices
  xhci: tegra: Enable ELPG for runtime/system PM

 .../phy/nvidia,tegra124-xusb-padctl.txt       |    1 +
 drivers/clk/tegra/clk-pll.c                   |   12 -
 drivers/clk/tegra/clk-tegra210.c              |   53 +-
 drivers/phy/tegra/xusb-tegra186.c             |  558 +++++-
 drivers/phy/tegra/xusb-tegra210.c             | 1553 ++++++++++++++---
 drivers/phy/tegra/xusb.c                      |   92 +-
 drivers/phy/tegra/xusb.h                      |   22 +-
 drivers/soc/tegra/pmc.c                       |   94 +
 drivers/usb/host/xhci-tegra.c                 |  613 +++++--
 include/linux/clk/tegra.h                     |    4 +-
 include/linux/phy/tegra/xusb.h                |   10 +-
 11 files changed, 2615 insertions(+), 397 deletions(-)