Messages in this thread | | | From | Dmitry Osipenko <> | Subject | [PATCH v3 0/8] NVIDIA Tegra clocksource driver improvements | Date | Fri, 24 May 2019 18:32:45 +0300 |
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Hello,
This series primarily unifies the driver code across all Tegra SoC generations. In a result the clocksources are allocated per-CPU on older Tegra's and have a higher rating than the arch-timer, the newer Tegra210 is getting support for microsecond clocksource and the driver's code is getting much cleaner. Note that arch-timer usage is discouraged on all Tegra's due to the time jitter caused by the CPU frequency scaling.
The series was extensively tested on Tegra20 and Tegra30.
Changelog:
v3: Fixed compilation on ARM64. Turned out that it doesn't have the delay-timer, thanks to Nicolas Chauvet for the report.
Added new "Support COMPILE_TEST universally" patch for better compile-test coverage.
v2: Rebased on recent linux-next. Now all of #ifdef's are removed from the code due to the recent patch that generalized persistent clocksource.
Couple other minor cosmetic changes.
Dmitry Osipenko (8): clocksource/drivers/tegra: Support per-CPU timers on all Tegra's clocksource/drivers/tegra: Unify timer code clocksource/drivers/tegra: Reset hardware state on init clocksource/drivers/tegra: Replace readl/writel with relaxed versions clocksource/drivers/tegra: Release all IRQ's on request_irq() error clocksource/drivers/tegra: Minor code clean up clocksource/drivers/tegra: Use SPDX identifier clocksource/drivers/tegra: Support COMPILE_TEST universally
drivers/clocksource/Kconfig | 4 +- drivers/clocksource/timer-tegra20.c | 276 +++++++++++++--------------- 2 files changed, 127 insertions(+), 153 deletions(-)
-- 2.21.0
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