Commit 30634334 authored by Vinayak Kariappa Chettimada's avatar Vinayak Kariappa Chettimada Committed by Anas Nashif
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Bluetooth: controller: Fix ULL_HIGH priority to be lower than LLL 



Fix the default ULL_HIGH execution priority to be lower than
LLL execution priority to reduce Radio ISR service latency.

Also, default to Zero Latency IRQ for Radio ISR if enabled
in the kernel.

Fixes #29994.

Signed-off-by: default avatarVinayak Kariappa Chettimada <vich@nordicsemi.no>
parent 929dae8c

subsys/bluetooth/controller/Kconfig.ll_sw_split

+4 −2
Original line number Diff line number Diff line
@@ -211,6 +211,7 @@ config BT_CTLR_SCAN_ENABLE_STRICT 
config BT_CTLR_ZLI

	bool "Use Zero Latency IRQs"

	depends on ZERO_LATENCY_IRQS

	default y

	help

	  Enable support for use of Zero Latency IRQ feature. Note, applications

	  shall not use Zero Latency IRQ themselves when this option is selected,
@@ -273,7 +274,7 @@ config BT_CTLR_SCHED_ADVANCED 
	  leading to skipped events amongst active roles.



config BT_CTLR_LLL_PRIO

	int "Lower Link Layer (Radio) IRQ priority"

	int "Lower Link Layer (Radio) IRQ priority" if !BT_CTLR_ZLI

	range 0 3 if SOC_SERIES_NRF51X

	range 0 6 if (SOC_SERIES_NRF52X || SOC_SERIES_NRF53X)

	default 0
@@ -284,7 +285,8 @@ config BT_CTLR_ULL_HIGH_PRIO 
	int "Upper Link Layer High IRQ priority"

	range BT_CTLR_LLL_PRIO 3 if SOC_SERIES_NRF51X

	range BT_CTLR_LLL_PRIO 6 if (SOC_SERIES_NRF52X || SOC_SERIES_NRF53X)

	default BT_CTLR_LLL_PRIO

	default BT_CTLR_LLL_PRIO if (BT_CTLR_ZLI || BT_CTLR_LOW_LAT_ULL)

	default 1

	help

	  The interrupt priority for Ticker's Worker IRQ and Upper Link Layer

	  higher priority functions.

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