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bluetooth: controller: Revised ticker for improved conflict resolution

Changed ticker behavior to resolve conflicts in ticker_worker instead of
in ticker_job. This allows better real-time slot allocation, as well as
allowing callbacks even if ticker node doesn't get air-time (for audio
stream housekeeping). A priority property now also allows prioritizing
one ticker node over others.
Compatibility mode enables lagacy ticker behavior if needed.

Signed-off-by: Morten Priess <>
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mtpr-ot authored and aescolar committed Aug 7, 2019
1 parent 303ef27 commit 3a9173afe1512ecf480cd709c70a6eb60b0cd7d5
@@ -651,6 +651,15 @@ config BT_MAYFLY_YIELD_AFTER_CALL
If set to 'n', all pending mayflies for callee are executed before

bool "Ticker compatibility mode"
default y if SOC_SERIES_NRF51X
This option enables legacy ticker scheduling which defers overlapping
ticker node timeouts and thereby prevents ticker interrupts during
radio RX/TX. Enabling this option disables the ticker priority- and
'must expire' features.

prompt "Enable proprietary extensions in Controller"
depends on BT_LL_SW_SPLIT

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