Wen Gong [off-list ref] wrote:

Add support for a vendor command for STATION, the command
QCA_NL80211_VENDOR_SUBCMD_SET_SAR_LIMITS which is already defined in
git://w1.fi/hostap.git (src/command/qca-vendor.h). This allows user
space to configure power limits for 2.4 GHz and 5 GHz bands.

ath10k set pdev parameter WMI_PDEV_PARAM_TXPOWER_LIMIT2G and
WMI_PDEV_PARAM_TXPOWER_LIMIT5G to firmware, the 2 value will
be used as one input source to affect the tx power.

When QCA_NL80211_VENDOR_SUBCMD_SET_SAR_LIMITS set to ath10k, it will
be saved the 2.4G and 5G limit value, If STATION is connected meanwhile,
then the 2.4G and 5G WMI command will be set to firmware, otherwise
it will not set to firmware at this moment. When STATION connect
next time, it will set to firmware.

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00029.

Signed-off-by: Wen Gong <redacted>
Signed-off-by: Kalle Valo <redacted>

The plan is to have a common API for SAR limits, not use vendor API.

Patch set to Rejected.

-- 
https://patchwork.kernel.org/patch/11686327/

https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches