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Merged
merged 4 commits into from
Jun 20, 2025
Merged

nrf70: Improve powerdown sequence #91786

merged 4 commits into from
Jun 20, 2025

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krish2718
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@krish2718 krish2718 commented Jun 17, 2025 •
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Follow the precise order for powering down NR70

  1. Drive all host side IO to GND (i.e. QSPI data lines, coex request)
  2. Power down IOVDD
  3. De-assert BUCKEN
  4. Power down VBAT

Note

  1. In order to perform $2 and $3, we cannot disconnect IOVDD and BUCKEN GPIOs in $2, they will be disconnected after $3.
  2. $4 is implicit and done using power supply, not SW controlled.

krish2718 added 4 commits June 17, 2025 22:20
@krish2718
modules: nrf_wifi: Improve power down sequence
21ff822 
Swap the order, IOVDD should be powered first and then BUCKEN.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
@krish2718
modules: nrf_wifi: Remove co-ex GPIOs first
2c4c616 
Before powering off remove co-ex GPIOs.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
@krish2718
modules: nrf_wifi: Implement QSPI deinit
9bccce1 
By default QSPI is uninitialized after every transaction, so, deinit is
a no-op, but if QSPI_LOW_POWER is disabled, then we need to uninitialize
the QSPI in the deinit.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
@krish2718
modules: nrf_wifi: Implement SPI deinit
0101617 
Release the SPI during the deinit to put respective GPIOs in low-power
state or disconnected.

Signed-off-by: Chaitanya Tata <Chaitanya.Tata@nordicsemi.no>
@krish2718 krish2718 changed the title nrf70: Improve powerdown seq nrf70: Improve powerdown sequence Jun 17, 2025
@github-actions github-actions bot added the area: Wi-Fi Wi-Fi label Jun 17, 2025
@github-actions github-actions bot requested a review from sachinthegreen June 17, 2025 16:54
@sonarqubecloud SonarQubeCloud
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Quality Gate Passed Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

@krish2718 krish2718 requested review from anangl and jukkar June 17, 2025 18:21
@dkalowsk dkalowsk merged commit 945ddf0 into zephyrproject-rtos:main Jun 20, 2025
36 checks passed
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@jukkar jukkar jukkar approved these changes

@sachinthegreen sachinthegreen sachinthegreen approved these changes

@anangl anangl Awaiting requested review from anangl

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@krish2718 @jukkar @sachinthegreen @dkalowsk