linux-kernel - Re: [PATCH v3 3/3] gnss: ubx: add support for the reset gpio

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Date:   Mon, 23 Oct 2023 09:09:03 +0200
From:   Wolfram Sang <wsa+renesas@...g-engineering.com>
To:     Johan Hovold <johan@...nel.org>
Cc:     linux-renesas-soc@...r.kernel.org,
        Geert Uytterhoeven <geert+renesas@...der.be>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 3/3] gnss: ubx: add support for the reset gpio


> So this means that the reset line will be asserted indefinitely in case
> the GNSS receiver is not used. Are you sure that's a good idea?

Yup. Saves power. We do this for our ethernet PHYs as well. Any reasons
not to do this?

> I don't know yet which module this is for, or how this signal is
> supposed to be used, but the above makes this look more like an
> active-high (regulator) enable signal. Perhaps that's what it is or
> should be modelled as (i.e. as a fixed regulator).

Nope, it is a RESET_N pin.


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