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drivers: wifi: siwx91x: Add support for Enhanced Legacy Power Save

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Siwx91x support a specific mode slightly better than the old legacy PS
mode.

This mode has to be set on the NWP boot, so it is not easy to configure
it during the runtime. Hence, this patch only provide a compile time
option to enable it.

Co-authored-by: Arunmani Alagarsamy <arunmani.a@silabs.com>
Signed-off-by: Arunmani Alagarsamy <arunmani.a@silabs.com>
Signed-off-by: Jérôme Pouiller <jerome.pouiller@silabs.com>
This commit is contained in:
Jérôme Pouiller 2025-05-21 14:59:15 +02:00 • committed by Benjamin Cabé
commit d7f1c0ad5f
2 changed files with 21 additions and 1 deletions
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18
drivers/wifi/siwx91x/Kconfig.siwx91x
View file

@ -14,6 +14,24 @@ config WIFI_SILABS_SIWX91X
if WIFI_SILABS_SIWX91X
config WIFI_SILABS_SIWX91X_ENHANCED_MAX_PSP
bool "Enhanced Max PSP Support"
default y
help
Enable this option to allow the device to configure
Enhanced Maximum Power Save (PSP) support during
device initialization.
**Advantages:**
- Reduces power consumption during low traffic periods.
- Automatically transitions to Fast PSP for improved responsiveness
when traffic is high.
**Limitations:**
- Initially uses PS-Poll frames for power management, even if the
user configures NULL frame-based.
- Switches to NULL frame-based only when traffic increases.
choice
prompt "Network stack"
default WIFI_SILABS_SIWX91X_NET_STACK_NATIVE

4
soc/silabs/silabs_siwx91x/siwg917/nwp.c
View file

@ -69,9 +69,11 @@ static void siwx91x_configure_sta_mode(sl_si91x_boot_configuration_t *boot_confi
#ifdef CONFIG_WIFI_SILABS_SIWX91X
boot_config->ext_tcp_ip_feature_bit_map = SL_SI91X_CONFIG_FEAT_EXTENSION_VALID;
boot_config->config_feature_bit_map = SL_SI91X_ENABLE_ENHANCED_MAX_PSP;
boot_config->ext_custom_feature_bit_map |= SL_SI91X_EXT_FEAT_IEEE_80211W |
SL_SI91X_EXT_FEAT_FRONT_END_SWITCH_PINS_ULP_GPIO_4_5_0;
if (IS_ENABLED(CONFIG_WIFI_SILABS_SIWX91X_ENHANCED_MAX_PSP)) {
boot_config->config_feature_bit_map = SL_SI91X_ENABLE_ENHANCED_MAX_PSP;
}
#endif
#ifdef CONFIG_BT_SILABS_SIWX91X