Ryan Hsu <ryanhsu@xxxxxxxxxxxxxxxx> wrote: > From: Ryan Hsu <ryanhsu@xxxxxxxxxxxxxxxx> > > Len Brown reported the system resume time is taking more than 2 seconds in > bug - https://bugzilla.kernel.org/show_bug.cgi?id=185621. > > The reason of the 2 seconds is due to the firmware download time. > > The chip is booted up in the default reference clock speed to handle the > firmware download to chip memory and advanced to the support higher speed > clock to run the firmware after all. The default reference clock in the > hardware is slow so that the firmware download time is taking up to 2 > seconds for a 600KB firmware file. > > [76796.349701] ath10k_pci : boot uploading firmware image len 688691 > [76798.334612] ath10k_pci : htt tx max num pending tx 1056 > > The resolution here is to enable the higher speed clock if the hardware > supported before the firmware download at BMI stage, so that the hardware > can handle the firmare download in a more efficient way. This can help to > improve the firmware download time from 2 seconds to around 500ms for the > same 600KB firmware file. > > [322858.577919] ath10k_pci boot uploading firmware image len 688691 > [322859.093094] ath10k_pci htt tx max num pending tx 1056 > > The steps to advance to the higher speed clock is very hardware specific, > so adding the hardware ops for the hardware that can support this. > > Reported-by: Len Brown <lenb@xxxxxxxxxx> > Signed-off-by: Ryan Hsu <ryanhsu@xxxxxxxxxxxxxxxx> 2 patches applied to ath-next branch of ath.git, thanks. 583a6629432c ath10k: improve the firmware download time for QCA6174 912b6e8850a5 ath10k: improve the firmware download time for QCA9377 -- https://patchwork.kernel.org/patch/9576081/ Documentation about submitting wireless patches and checking status from patchwork: https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
