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author | Sascha Hauer <s.hauer@pengutronix.de> | 2018-06-21 13:44:30 +0200 |
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committer | Sascha Hauer <s.hauer@pengutronix.de> | 2018-06-22 08:16:13 +0200 |
commit | e4067b75fb6ca83a58b2c342a0b3ee12e1223c4e (patch) | |
tree | be013bf46292f4696ac776bc91c1cf35b7adab24 /dts/Bindings/timer/arm,twd.txt | |
parent | fe040e0977fab29216f5039e8f9b04e6dbec859a (diff) | |
download | barebox-e4067b75fb6ca83a58b2c342a0b3ee12e1223c4e.tar.gz barebox-e4067b75fb6ca83a58b2c342a0b3ee12e1223c4e.tar.xz |
dts: update to v4.18-rc1
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'dts/Bindings/timer/arm,twd.txt')
-rw-r--r-- | dts/Bindings/timer/arm,twd.txt | 53 |
1 files changed, 53 insertions, 0 deletions
diff --git a/dts/Bindings/timer/arm,twd.txt b/dts/Bindings/timer/arm,twd.txt new file mode 100644 index 0000000000..383ea19c2b --- /dev/null +++ b/dts/Bindings/timer/arm,twd.txt @@ -0,0 +1,53 @@ +* 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. + +Optional + +- always-on : a boolean property. If present, the timer is powered through + an always-on power domain, therefore it never loses context. + +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>; + }; |