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

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Date:   Mon, 18 Nov 2019 16:29:49 -0300
From:   Fabio Estevam <festevam@...il.com>
To:     Marco Franchi <marcofrk@...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

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 tooked a quick look and I see a ALC5635 codec, but the dts shows
WM8524 instead.

Which one is correct?

> 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.

Forgot to mention, but you also need to add a separate patch that adds
this board entry into Documentation/devicetree/bindings/arm/fsl.yaml

Regards,

Fabio Estevam