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drivers: nrfwifi: WAR for performance regression

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With the newly introduced settling time for PLLS, we are seeing a peak
performance drop of 3Mbps in Zperf benchmarks, and also other
performance tests are also impacted.

This settling time was introduced based on observations in lab and not
because of any real problem or bug reported, so, for now, use zero
settling time (same as earlier) till we fully investigate and understand
the impacts and need.

Fixes #80951.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
This commit is contained in:
Chaitanya Tata 2024-11-06 02:14:53 +05:30 committed by Mahesh Mahadevan
parent 6c79fdf2ca
commit 073f68d248
1 changed files with 4 additions and 1 deletions
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drivers/wifi/nrfwifi/src/qspi/src/qspi_if.c
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@ -125,7 +125,10 @@ BUILD_ASSERT(QSPI_IF_DEVICE_FREQUENCY >= (NRF_QSPI_BASE_CLOCK_FREQ / 16),
* starts. It was measured with a logic analyzer (unfortunately, the nRF5340
* specification does not provide any numbers in this regard).
*/
#define BASE_CLOCK_SWITCH_DELAY_US 7
/* FIXME: This has adverse impact on performance, ~3Mbps, so, for now, it is
* disabled till further investigation.
*/
#define BASE_CLOCK_SWITCH_DELAY_US 0
#else
/*