linux-kernel - Re: [v2] brcmfmac: Avoid keeping power to SDIO card unless WOWL is used

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Date:   Wed,  6 Apr 2022 12:11:22 +0000 (UTC)
From:   Kalle Valo <kvalo@...nel.org>
To:     Ulf Hansson <ulf.hansson@...aro.org>
Cc:     linux-wireless@...r.kernel.org,
        Yann Gautier <yann.gautier@...s.st.com>,
        Arend van Spriel <aspriel@...il.com>,
        Franky Lin <franky.lin@...adcom.com>,
        Hante Meuleman <hante.meuleman@...adcom.com>,
        Gustavo Padovan <gustavo.padovan@...labora.com>,
        Adrian Ratiu <adrian.ratiu@...labora.com>,
        Ulf Hansson <ulf.hansson@...aro.org>,
        brcm80211-dev-list.pdl@...adcom.com, linux-kernel@...r.kernel.org
Subject: Re: [v2] brcmfmac: Avoid keeping power to SDIO card unless WOWL is
 used

Ulf Hansson <ulf.hansson@...aro.org> wrote:

> Keeping the power to the SDIO card during system wide suspend, consumes
> energy. Especially on battery driven embedded systems, this can be a
> problem. Therefore, let's change the behaviour into allowing the SDIO card
> to be powered off, unless WOWL is supported and enabled.
> 
> Note that, the downside from this change, is that during system resume the
> SDIO card needs to be re-initialized and the FW must be re-programmed. Even
> if this may take some time to complete, it should we worth it, rather than
> draining the battery.
> 
> Signed-off-by: Ulf Hansson <ulf.hansson@...aro.org>
> Tested-by: Christophe Roullier <christophe.roullier@...s.st.com>
> Reviewed-by: Yann Gautier <yann.gautier@...s.st.com>

Patch applied to wireless-next.git, thanks.

92cadedd9d5f brcmfmac: Avoid keeping power to SDIO card unless WOWL is used

-- 
https://patchwork.kernel.org/project/linux-wireless/patch/20220323083950.414783-1-ulf.hansson@linaro.org/

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