linux-kernel - Re: [PATCH] arm64: dts: freescale: add initial support for Google i.MX 8MQ Phanbell

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Date:   Tue, 19 Nov 2019 10:02:54 -0200
From:   Marco Franchi <marcofrk@...il.com>
To:     Fabio Estevam <festevam@...il.com>
Cc:     Marco Antonio Franchi <marco.franchi@....com>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>
Subject: Re: [PATCH] arm64: dts: freescale: add initial support for Google
 i.MX 8MQ Phanbell

Hello Fabio,

Em seg., 18 de nov. de 2019 às 17:29, Fabio Estevam
<festevam@...il.com> escreveu:
>
> Hi Marco,
>
> On Mon, Nov 18, 2019 at 11:16 AM Marco Franchi <marcofrk@...il.com> wrote:
>
> > > Also, is the schematics available?
> > Yes: https://storage.googleapis.com/site_and_emails_static_assets/Files/Coral-Dev-Board-baseboard-schematic.pdf
>
> Thanks. Would you also have the schematics for the SOM board?
I could not find the schematic, but at this page you will find a lot
of information regarding it:
https://coral.withgoogle.com/docs/som/datasheet/
>
> I tooked a quick look and I see a ALC5635 codec, but the dts shows
> WM8524 instead.
>
> Which one is correct?
Internally they are using WM8524, but I will confirm and test it again.
>
> > If I applied this change, I won't be able to boot the board, due to
> > the U-Boot dependence.
> > Should I try to apply the U-Boot mainline support first?
>
> You could build the mainline dtb and rename it with the fsl prefix
> locally so you could boot test it.
Cool! Thanks.
>
> Forgot to mention, but you also need to add a separate patch that adds
> this board entry into Documentation/devicetree/bindings/arm/fsl.yaml
Ok.
>
> Regards,
>
> Fabio Estevam

Thanks Fabio, I will apply these points too.

BR,
Marco