[PATCH V3 00/17] SC7 entry and exit support for Tegra210

From: Sowjanya Komatineni
Date: Tue Jun 18 2019 - 03:51:38 EST

This patch series includes Tegra210 deepsleep support with RTC alarm
wake event.

This series also includes save and restore of PLLs, clocks, OSC contexts
for deepsleep exit to normal operation.

This patch series doesn't support 100% suspend/resume to allow fully
functional state upon resume and we are working on some more drivers suspend
and resume implementations.

[V3]: Changes between V2 & V3 are
- V2 feedback fixes
- GPIO restore should happen prior to Pinctrl restore to prevent
glitch on GPIO lines. So using resume_noirq for gpio tegra to allow
gpio resume prior to pinctrl resume.
- Implemented save_context and restore_context callbacks for clock
plls, pll outs and dividers in corresponding drivers.
Note: Peripheral clocks and clock enable and reset need to be in
Tegra210 clock suspend/resume as they need to be in proper sequence
w.r.t DFLL resume for restoring CPU clock.
- Removed gpio-tegra changes for hierarchical support to have PMC as
parent to GPIOs for GPIO wake event support. Thierry is working on
gpiolib for some cleanup before adding hierarchical support. So
holding on to GPIO wake support for now.

[V2] : V1 feedback fixes
Patch 0002: This version still using syscore. Thierry suggest not to
use syscore and waiting on suggestion from Linux Walleij for any better
way of storing current state of pins before suspend entry and restoring
them on resume at very early stage. So left this the same way as V1 and
will address once I get more feedback on this.
Also need to findout and implement proper way of forcing resume order
between pinctrl and gpio driver.

[V1]: Tegra210 SC7 entry and exit thru RTC wake and Power button GPIO wake
using hierarchical IRQ with PMC as parent to GPIO.

Sowjanya Komatineni (17):
irqchip: tegra: do not disable COP IRQ during suspend
pinctrl: tegra: add suspend and resume support
gpio: tegra: use resume_noirq for tegra gpio resume
clk: tegra: save and restore divider rate
clk: tegra: pllout: save and restore pllout context
clk: tegra: pll: save and restore pll context
clk: tegra: save and restore CPU and System clocks context
clk: tegra: add support for peripheral clock suspend and resume
clk: tegra: support for saving and restoring OSC clock context
clk: tegra: add suspend resume support for DFLL
clk: tegra210: support for Tegra210 clocks suspend and resume
soc/tegra: pmc: allow support for more tegra wake
soc/tegra: pmc: add pmc wake support for tegra210
arm64: tegra: enable wake from deep sleep on RTC alarm.
soc/tegra: pmc: configure core power request polarity
soc/tegra: pmc: configure deep sleep control settings
arm64: dts: tegra210-p2180: Jetson TX1 SC7 timings

arch/arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 7 +
arch/arm64/boot/dts/nvidia/tegra210.dtsi | 5 +-
drivers/clk/tegra/clk-dfll.c | 78 +++++++++
drivers/clk/tegra/clk-dfll.h | 2 +
drivers/clk/tegra/clk-divider.c | 23 +++
drivers/clk/tegra/clk-pll-out.c | 28 ++++
drivers/clk/tegra/clk-pll.c | 115 +++++++++----
drivers/clk/tegra/clk-tegra-fixed.c | 14 ++
drivers/clk/tegra/clk-tegra-super-gen4.c | 4 -
drivers/clk/tegra/clk-tegra210.c | 218 ++++++++++++++++++++++++-
drivers/clk/tegra/clk.c | 150 ++++++++++++++++-
drivers/clk/tegra/clk.h | 29 +++-
drivers/gpio/gpio-tegra.c | 17 +-
drivers/irqchip/irq-tegra.c | 21 ++-
drivers/pinctrl/tegra/pinctrl-tegra.c | 62 +++++++
drivers/pinctrl/tegra/pinctrl-tegra.h | 5 +
drivers/pinctrl/tegra/pinctrl-tegra114.c | 1 +
drivers/pinctrl/tegra/pinctrl-tegra124.c | 1 +
drivers/pinctrl/tegra/pinctrl-tegra20.c | 1 +
drivers/pinctrl/tegra/pinctrl-tegra210.c | 13 ++
drivers/pinctrl/tegra/pinctrl-tegra30.c | 1 +
drivers/soc/tegra/pmc.c | 143 +++++++++++++++-
22 files changed, 880 insertions(+), 58 deletions(-)