From: Kalle Valo <kvalo@codeaurora.org>
To: Sowmiya Sree Elavalagan <ssreeela@codeaurora.org>
Cc: ath11k@lists.infradead.org, linux-wireless@vger.kernel.org,
Govindaraj Saminathan <gsamin@codeaurora.org>,
Sowmiya Sree Elavalagan <ssreeela@codeaurora.org>
Subject: Re: [PATCH v4] ath11k: cold boot calibration support
Date: Sat, 7 Nov 2020 08:02:04 +0000 (UTC) [thread overview]
Message-ID: <20201107080204.486CBC433C9@smtp.codeaurora.org> (raw)
In-Reply-To: <1602862111-14063-1-git-send-email-ssreeela@codeaurora.org>
Sowmiya Sree Elavalagan <ssreeela@codeaurora.org> 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@codeaurora.org>
> Co-developed-by: Sowmiya Sree Elavalagan <ssreeela@codeaurora.org>
> Signed-off-by: Sowmiya Sree Elavalagan <ssreeela@codeaurora.org>
> Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
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@codeaurora.org/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
next prev parent reply other threads:[~2020-11-07 8:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-16 15:28 [PATCH v4] ath11k: cold boot calibration support Sowmiya Sree Elavalagan
2020-10-16 15:28 ` Sowmiya Sree Elavalagan
2020-11-07 8:02 ` Kalle Valo [this message]
2020-11-07 8:02 ` Kalle Valo
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