linux-kernel - Re: [PATCH v3 2/3] dt-bindings: gnss: u-blox: add "reset-gpios" binding

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Message-ID: <ZUj0zWeadtdtCHGy@hovoldconsulting.com>
Date:   Mon, 6 Nov 2023 15:14:37 +0100
From:   Johan Hovold <johan@...nel.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     linux-renesas-soc@...r.kernel.org,
        Conor Dooley <conor.dooley@...rochip.com>,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/3] dt-bindings: gnss: u-blox: add "reset-gpios"
 binding

On Mon, Oct 23, 2023 at 08:52:25AM +0200, Wolfram Sang wrote:
> > And what GNSS chip/module is this? This should also be included in the
> > commit message.
> 
> Ok. UBlox Neo-M8.
> 
> > Do you have a link to a datasheet?
> 
> https://www.u-blox.com/sites/default/files/NEO-M8-FW3_DataSheet_UBX-15031086.pdf
> 
> > None of the u-blox modules I've seen have a reset line so I'd like to
> > where this came from and how it is intended to be used.
> 
> I didn't know that old modules did not have the reset pin. I thought
> they were simply not used, so far. This one has. Check pin8 in chapter
> 2.1 in the datasheet.

Indeed. I must have looked at the datasheet of the older neo-6, which
does not have a reset pin, before replying.

Johan

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