linux-kernel - Re: [RFC PATCH 4/5] gnss: ubx: add support for the reset gpio

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Message-ID: <ZJFtdWK5I13YUUcu@hovoldconsulting.com>
Date:   Tue, 20 Jun 2023 11:12:21 +0200
From:   Johan Hovold <johan@...nel.org>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>
Cc:     linux-renesas-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [RFC PATCH 4/5] gnss: ubx: add support for the reset gpio

On Tue, Jun 20, 2023 at 11:06:33AM +0200, Wolfram Sang wrote:
> 
> > > Tested with a Renesas KingFisher board. The chip correctly disappears
> > > from the I2C bus when the 'gnss0' device is not opened.
> > 
> > What do you mean by "disappears from the I2C bus"?
> > 
> > Does this device support both I2C and UART?
> 
> Yes, and on my board, both are wired.

Ah, yes, it was ublox device.

But can you elaborate on the "disappearing" bit? How exactly does it
"disappear" when the gnss0 device is *not* opened?

Johan

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