[PATCH V5 0/7] Add CPUidle support for Tegra210

Joseph Lo
2019-02-01T03:36:14Z

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 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: 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

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2.20.1