linux-kernel - Re: [PATCH v4 3/3] gnss: ubx: add support for the reset gpio

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Message-ID: <ZUlHLZ1mm9IpSPal@ninjato>
Date:   Mon, 6 Nov 2023 21:06:05 +0100
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 v4 3/3] gnss: ubx: add support for the reset gpio


> 	1.5 I/O pins
> 	RESET_N: Reset input
> 	Driving RESET_N low activates a hardware reset of the system.
> 	Use this pin only to reset the module. Do not use RESET_N to
> 	turn the module on and off, since the reset state increases
> 	power consumption.
> 
> (and AFAIU you should generally not try to use reset this way unless it
> is explicitly said to be supported).

Oh! That's the opposite of my intention :/ Okay, today I learnt
something. Thank you for pointing this out. I will remember this and
double check reset handling in the future.

That means I only need to de-assert reset in probe() for now, right?


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