This patch series adds CPUidle support for Tegra210, which supports power-down state (C7) 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. 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: dts: tegra210: fix timer node arm64: dts: tegra210: add CPU idle states properties arm64: dts: tegra210-p2180: Enable CPU idle support arm64: dts: tegra210-smaug: Enable CPU idle support .../bindings/timer/nvidia,tegra210-timer.txt | 36 ++ .../arm64/boot/dts/nvidia/tegra210-p2180.dtsi | 6 + arch/arm64/boot/dts/nvidia/tegra210-smaug.dts | 7 + arch/arm64/boot/dts/nvidia/tegra210.dtsi | 33 +- drivers/clocksource/Kconfig | 2 +- drivers/clocksource/timer-tegra20.c | 369 +++++++++++++----- drivers/soc/tegra/Kconfig | 1 + include/linux/cpuhotplug.h | 1 + 8 files changed, 352 insertions(+), 103 deletions(-) create mode 100644 Documentation/devicetree/bindings/timer/nvidia,tegra210-timer.txt -- 2.20.1
