[PATCH V7 0/8] Add CPUidle support for Tegra210

From: Joseph Lo <josephl@nvidia.com>
To: Thierry Reding <thierry.reding@gmail.com>,
	Jonathan Hunter <jonathanh@nvidia.com>,
	Daniel Lezcano <daniel.lezcano@linaro.org>,
	Thomas Gleixner <tglx@linutronix.de>
Cc: linux-tegra@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org,
	Joseph Lo <josephl@nvidia.com>
Subject: [PATCH V7 0/8] Add CPUidle support for Tegra210
Date: Thu, 21 Feb 2019 15:21:42 +0800	[thread overview]
Message-ID: <20190221072150.4395-1-josephl@nvidia.com> (raw)

This patch series adds CPUidle support for Tegra210, which supports
cpu-sleep state for CPU cores. And due to arch timer cannot work
across CPU core power-down and power on reset signal event. We introduce
Tegra210 timer driver to work as clock event device. So it can be the
wake-up source of CPU cores when they idled in the power-down state.

Fix in V7:
 * kconfig fix for 'depends on ARM || ARM64'
 * move suspend/resume to clkevt
 * refine the usage of the macro of TIMER_OF_DECLARE
 * update the 'entry/exit-latency-us' properties in the idle-states node
 * add one patch for Shield platform support

Fix in V6:
 * refine the timer defines in the timer driver (PATCH 2)
 * add ack tags from Jon Hunter.

Fixed in V5:
 * Just resend this whole series again with timer and Tegra maintainers
   included

Fixed in V4:
 * merge timer-tegra210.c into timer-tegra20.c
 * add a new patch to select TEGRA_TIMER by default for Tegra210

Fixed in V3:
 * use timer-of API for Tegra210 timer driver

Fixed in V2:
 * list all the timer IRQs in the binding doc and dts file
 * add error clean-up code in timer driver
 * add entry-latency-us and exit-latency-us properties for idle-states
   DT node

Joseph Lo (7):
  dt-bindings: timer: add Tegra210 timer
  clocksource: tegra: add Tegra210 timer support
  soc/tegra: default select TEGRA_TIMER for Tegra210
  arm64: tegra: fix timer node for Tegra210
  arm64: tegra: add CPU idle states properties for Tegra210
  arm64: tegra: Enable CPU idle support for Jetson TX1
  arm64: tegra: Enable CPU idle support for Smaug
  arm64: tegra: Enable CPU idle support for Shield

 .../bindings/timer/nvidia,tegra210-timer.txt  |  36 ++
 .../arm64/boot/dts/nvidia/tegra210-p2180.dtsi |   6 +
 .../arm64/boot/dts/nvidia/tegra210-p2894.dtsi |   6 +
 arch/arm64/boot/dts/nvidia/tegra210-smaug.dts |   7 +
 arch/arm64/boot/dts/nvidia/tegra210.dtsi      |  33 +-
 drivers/clocksource/Kconfig                   |   3 +-
 drivers/clocksource/timer-tegra20.c           | 370 ++++++++++++------
 drivers/soc/tegra/Kconfig                     |   1 +
 include/linux/cpuhotplug.h                    |   1 +
 9 files changed, 348 insertions(+), 115 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/timer/nvidia,tegra210-timer.txt

-- 
2.20.1

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