On Fri, Feb 05, 2021 at 05:15:21PM +0100, Thierry Reding wrote:

On Wed, Jan 20, 2021 at 03:34:00PM +0800, JC Kuo wrote:

quoted

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.

JC Kuo (14):
  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
  arm64: tegra210: XUSB PADCTL add "nvidia,pmc" prop
  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 +
 arch/arm64/boot/dts/nvidia/tegra210.dtsi      |    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             | 1889 +++++++++++++----
 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 +-
 12 files changed, 2784 insertions(+), 565 deletions(-)

v5 "phy: tegra: xusb: tegra210: Do not reset UPHY PLL" is moved
into v6 "phy: tegra: xusb: Rearrange UPHY init on Tegra210"

Mike, Stephen,

could you guys take a look at the two clk patches here and give an
Acked-by? There's build-time dependencies throughout the series, so it'd
be good if they can all go through either the PHY or USB trees.

Kishon, Greg,

any comments on these patches? Unfortunately, the USB patches in this
series have a build-time dependency on the PHY patches, so this should
all go through one tree. Since this all culminates in the XHCI driver,
merging this through the USB tree might be best, provided that Kishon
provides his Acked-by on the PHY patches.

Alternatively, I can create a set of branches with the correct
dependencies and send out pull requests for the three subsystems if
that's preferrable.

I have no objection for the usb patches to go through your tree as they
are hardware-specific.

thanks,

greg k-h