From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from m42-4.mailgun.net ([69.72.42.4]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1kbJBZ-0007qd-QX for ath11k@lists.infradead.org; Sat, 07 Nov 2020 08:03:01 +0000 MIME-Version: 1.0 Subject: Re: [PATCH v4] ath11k: cold boot calibration support From: Kalle Valo In-Reply-To: <1602862111-14063-1-git-send-email-ssreeela@codeaurora.org> References: <1602862111-14063-1-git-send-email-ssreeela@codeaurora.org> Message-Id: <20201107080204.4370AC433C8@smtp.codeaurora.org> Date: Sat, 7 Nov 2020 08:02:04 +0000 (UTC) List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "ath11k" Errors-To: ath11k-bounces+kvalo=adurom.com@lists.infradead.org To: Sowmiya Sree Elavalagan Cc: Govindaraj Saminathan , linux-wireless@vger.kernel.org, ath11k@lists.infradead.org Sowmiya Sree Elavalagan 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 > Co-developed-by: Sowmiya Sree Elavalagan > Signed-off-by: Sowmiya Sree Elavalagan > Signed-off-by: Kalle Valo 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 -- ath11k mailing list ath11k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath11k