linux-kernel - Re: [PATCH] ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz

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Date:   Tue, 13 Jul 2021 23:23:42 +0300
From:   Oleksandr Suvorov <oleksandr.suvorov@...adex.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Linux Next Mailing List <linux-next@...r.kernel.org>,
        NXP Linux Team <linux-imx@....com>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Rob Herring <robh+dt@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" 
        <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz

Hi Fabio,
On Tue, Jul 13, 2021 at 11:10 PM Fabio Estevam <festevam@...il.com> wrote:
>
> Hi Oleksandr,
>
> On Tue, Jul 13, 2021 at 4:54 PM Oleksandr Suvorov
> <oleksandr.suvorov@...adex.com> wrote:
> >
> > NXP and AzureWave don't recommend using SDIO bus mode 3.3V@...Hz due
> > to noise affecting the wireless throughput. Colibri iMX6ULL uses only
> > 3.3V signaling for Wi-Fi module AW-CM276NF.
> >
> > Limit the SDIO Clock on Colibri iMX6ULL to 25MHz.
>
> What about adding a Fixes tag so that it can go to the stable trees?

Good point, thanks! I'll add in the 2nd version.
>
> Reviewed-by: Fabio Estevam <festevam@...il.com>

Thanks for the review!

Best regards
Oleksandr Suvorov

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