linux-kernel - Re: [RFC PATCH 5/5] arm: dts: zynq: remove "zynq" prefix from compatible property

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Date:   Tue, 3 Jul 2018 03:18:49 -0400
From:   Luis Araneda <luaraneda@...il.com>
To:     Michal Simek <michal.simek@...inx.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree <devicetree@...r.kernel.org>,
        linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
        linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 5/5] arm: dts: zynq: remove "zynq" prefix from
 compatible property

Hi Michal,

On Thu, Jun 28, 2018 at 2:42 AM Michal Simek <michal.simek@...inx.com> wrote:
> zynq name here is correct which is saying that hardblock is going to be
> described. Without it it is suggesting that hardblock is not used and it
> is for example on zybo with microblaze.

In my opinion, the zynq name is just adding redundant information to
the "xlnx,zynq-7000" value.
Taking the Zybo board, the current compatible property is:
> compatible = "digilent,zynq-zybo", "xlnx,zynq-7000";

I'm proposing to change it to:
> compatible = "digilent,zybo", "xlnx,zynq-7000";
(I know I must keep the old value too,  I'm simplifying)

In the case of a Zybo board with a microblaze, the property could be:
> compatible = "digilent,zybo", "xlnx,microblaze";

That would allow to differentiate between zynq and microblaze.

I have no problem on dropping the patch if you like. There might be
something that I'm not seeing or a use case that I'm missing.


Thanks,

Luis Araneda.