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authorLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:06:17 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-03-27 16:06:17 -0700
commit48d554418d3bfbba5e9dc1ebdf352f1b1f3ff4ee (patch)
tree696bdc0c1087e82c6493c852bca514bb0fcd7881 /Documentation
parentd61b7a572b292e2be409e13b4b3adf475f18fb29 (diff)
parent2cbe23e3a432e3d09a849adb197c8fcc09e7391d (diff)
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Merge tag 'timer' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull "ARM: timer cleanup work" from Arnd Bergmann: "These are split out from the generic soc and driver updates because there was a lot of conflicting work by multiple people. Marc Zyngier worked on simplifying the "localtimer" interfaces, and some of the platforms are touching the same code as they move to device tree based booting. Signed-off-by: Arnd Bergmann <arnd@arndb.de>" * tag 'timer' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (61 commits) ARM: tegra: select USB_ULPI if USB is selected arm/tegra: pcie: fix return value of function ARM: ux500: fix compilation after local timer rework ARM: shmobile: remove additional __io() macro use ARM: local timers: make the runtime registration interface mandatory ARM: local timers: convert MSM to runtime registration interface ARM: local timers: convert exynos to runtime registration interface ARM: smp_twd: remove old local timer interface ARM: imx6q: convert to twd_local_timer_register() interface ARM: highbank: convert to twd_local_timer_register() interface ARM: ux500: convert to twd_local_timer_register() interface ARM: shmobile: convert to twd_local_timer_register() interface ARM: tegra: convert to twd_local_timer_register() interface ARM: plat-versatile: convert to twd_local_timer_register() interface ARM: OMAP4: convert to twd_local_timer_register() interface ARM: smp_twd: add device tree support ARM: smp_twd: add runtime registration support ARM: local timers: introduce a new registration interface ARM: smp_twd: make local_timer_stop a symbol instead of a #define ARM: mach-shmobile: default to no earlytimer ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/arm/twd.txt48
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diff --git a/Documentation/devicetree/bindings/arm/twd.txt b/Documentation/devicetree/bindings/arm/twd.txt
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+* ARM Timer Watchdog
+
+ARM 11MP, Cortex-A5 and Cortex-A9 are often associated with a per-core
+Timer-Watchdog (aka TWD), which provides both a per-cpu local timer
+and watchdog.
+
+The TWD is usually attached to a GIC to deliver its two per-processor
+interrupts.
+
+** Timer node required properties:
+
+- compatible : Should be one of:
+ "arm,cortex-a9-twd-timer"
+ "arm,cortex-a5-twd-timer"
+ "arm,arm11mp-twd-timer"
+
+- interrupts : One interrupt to each core
+
+- reg : Specify the base address and the size of the TWD timer
+ register window.
+
+Example:
+
+ twd-timer@2c000600 {
+ compatible = "arm,arm11mp-twd-timer"";
+ reg = <0x2c000600 0x20>;
+ interrupts = <1 13 0xf01>;
+ };
+
+** Watchdog node properties:
+
+- compatible : Should be one of:
+ "arm,cortex-a9-twd-wdt"
+ "arm,cortex-a5-twd-wdt"
+ "arm,arm11mp-twd-wdt"
+
+- interrupts : One interrupt to each core
+
+- reg : Specify the base address and the size of the TWD watchdog
+ register window.
+
+Example:
+
+ twd-watchdog@2c000620 {
+ compatible = "arm,arm11mp-twd-wdt";
+ reg = <0x2c000620 0x20>;
+ interrupts = <1 14 0xf01>;
+ };
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