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author | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-13 23:02:31 +0300 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2018-08-13 23:02:31 +0300 |
commit | 1e45e9a95ec277272f73439629b6e3fe1f047e92 (patch) | |
tree | d7236a7917fe6e44a625491228fb26bd5af49d38 /Documentation/devicetree | |
parent | 8603596a327c978534f5c45db135e6c36b4b1425 (diff) | |
parent | fbfa9260085b5b578a049a90135e5c51928c5f7f (diff) | |
download | linux-1e45e9a95ec277272f73439629b6e3fe1f047e92.tar.xz |
Merge branch 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer updates from Thomas Gleixner:
"The timers departement more or less proudly presents:
- More Y2038 timekeeping work mostly in the core code. The work is
slowly, but steadily targeting the actuall syscalls.
- Enhanced timekeeping suspend/resume support by utilizing
clocksources which do not stop during suspend, but are otherwise
not the main timekeeping clocksources.
- Make NTP adjustmets more accurate and immediate when the frequency
is set directly and not incrementally.
- Sanitize the overrung handing of posix timers
- A new timer driver for Mediatek SoCs
- The usual pile of fixes and updates all over the place"
* 'timers-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (32 commits)
clockevents: Warn if cpu_all_mask is used as cpumask
tick/broadcast-hrtimer: Use cpu_possible_mask for ce_broadcast_hrtimer
clocksource/drivers/arm_arch_timer: Fix bogus cpu_all_mask usage
clocksource: ti-32k: Remove CLOCK_SOURCE_SUSPEND_NONSTOP flag
timers: Clear timer_base::must_forward_clk with timer_base::lock held
clocksource/drivers/sprd: Register one always-on timer to compensate suspend time
clocksource/drivers/timer-mediatek: Add support for system timer
clocksource/drivers/timer-mediatek: Convert the driver to timer-of
clocksource/drivers/timer-mediatek: Use specific prefix for GPT
clocksource/drivers/timer-mediatek: Rename mtk_timer to timer-mediatek
clocksource/drivers/timer-mediatek: Add system timer bindings
clocksource/drivers: Set clockevent device cpumask to cpu_possible_mask
time: Introduce one suspend clocksource to compensate the suspend time
time: Fix extra sleeptime injection when suspend fails
timekeeping/ntp: Constify some function arguments
ntp: Use kstrtos64 for s64 variable
ntp: Remove redundant arguments
timer: Fix coding style
ktime: Provide typesafe ktime_to_ns()
hrtimer: Improve kernel message printing
...
Diffstat (limited to 'Documentation/devicetree')
-rw-r--r-- | Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt | 34 |
1 files changed, 20 insertions, 14 deletions
diff --git a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt index b1fe7e9de1b4..18d4d0166c76 100644 --- a/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt +++ b/Documentation/devicetree/bindings/timer/mediatek,mtk-timer.txt @@ -1,19 +1,25 @@ -Mediatek MT6577, MT6572 and MT6589 Timers ---------------------------------------- +Mediatek Timers +--------------- + +Mediatek SoCs have two different timers on different platforms, +- GPT (General Purpose Timer) +- SYST (System Timer) + +The proper timer will be selected automatically by driver. Required properties: - compatible should contain: - * "mediatek,mt2701-timer" for MT2701 compatible timers - * "mediatek,mt6580-timer" for MT6580 compatible timers - * "mediatek,mt6589-timer" for MT6589 compatible timers - * "mediatek,mt7623-timer" for MT7623 compatible timers - * "mediatek,mt8127-timer" for MT8127 compatible timers - * "mediatek,mt8135-timer" for MT8135 compatible timers - * "mediatek,mt8173-timer" for MT8173 compatible timers - * "mediatek,mt6577-timer" for MT6577 and all above compatible timers -- reg: Should contain location and length for timers register. -- clocks: Clocks driving the timer hardware. This list should include two - clocks. The order is system clock and as second clock the RTC clock. + * "mediatek,mt2701-timer" for MT2701 compatible timers (GPT) + * "mediatek,mt6580-timer" for MT6580 compatible timers (GPT) + * "mediatek,mt6589-timer" for MT6589 compatible timers (GPT) + * "mediatek,mt7623-timer" for MT7623 compatible timers (GPT) + * "mediatek,mt8127-timer" for MT8127 compatible timers (GPT) + * "mediatek,mt8135-timer" for MT8135 compatible timers (GPT) + * "mediatek,mt8173-timer" for MT8173 compatible timers (GPT) + * "mediatek,mt6577-timer" for MT6577 and all above compatible timers (GPT) + * "mediatek,mt6765-timer" for MT6765 compatible timers (SYST) +- reg: Should contain location and length for timer register. +- clocks: Should contain system clock. Examples: @@ -21,5 +27,5 @@ Examples: compatible = "mediatek,mt6577-timer"; reg = <0x10008000 0x80>; interrupts = <GIC_SPI 113 IRQ_TYPE_LEVEL_LOW>; - clocks = <&system_clk>, <&rtc_clk>; + clocks = <&system_clk>; }; |