Sowmiya Sree Elavalagan <ssreeela@xxxxxxxxxxxxxx> wrote: > cold boot calibration is the process to calibrate all the channels > during the boot-up to avoid the calibration delay during the > channel change. > During the boot-up, firmware started in cold boot calibration mode > Firmware calibrate all channels and generate CalDb(DDR). > Subsequent wifi bringup will reuse the same CalDb. > Firmware is restarted in normal mode to continue the normal operation. > > caldb memory address send to firmware through the QMI message.Firmware > use this address to store the caldb data and use it until next reboot. > > This will give the improvement during the channel change. But it is > increasing the boot-up time(up to 15sec depend on number of radios). > So if the user want to reduce the boot-up time and accepting for channel > change delay, user can disable this feature using the module param > cold_boot_cal=0. > > Tested-on: IPQ8074 WLAN.HK.2.4.0.1-01162-QCAHKSWPL_SILICONZ-1 > > Signed-off-by: Govindaraj Saminathan <gsamin@xxxxxxxxxxxxxx> > Co-developed-by: Sowmiya Sree Elavalagan <ssreeela@xxxxxxxxxxxxxx> > Signed-off-by: Sowmiya Sree Elavalagan <ssreeela@xxxxxxxxxxxxxx> > Signed-off-by: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Patch applied to ath-next branch of ath.git, thanks. 02f9d3c1b918 ath11k: cold boot calibration support -- https://patchwork.kernel.org/project/linux-wireless/patch/1602862111-14063-1-git-send-email-ssreeela@xxxxxxxxxxxxxx/ https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
