linux-kernel - Re: [PATCH RFC 5/5] dt-bindings: gnss: add lna-supply property

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Message-ID: <20181209201134.52c16a71@aktux>
Date:   Sun, 9 Dec 2018 20:11:34 +0100
From:   Andreas Kemnade <andreas@...nade.info>
To:     Johan Hovold <johan@...nel.org>
Cc:     robh+dt@...nel.org, mark.rutland@....com,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        Discussions about the Letux Kernel 
        <letux-kernel@...nphoenux.org>
Subject: Re: [PATCH RFC 5/5] dt-bindings: gnss: add lna-supply property

On Wed, 5 Dec 2018 16:09:39 +0100
Johan Hovold <johan@...nel.org> wrote:

> On Sun, Nov 18, 2018 at 10:58:01PM +0100, Andreas Kemnade wrote:
> > Add lna-supply property.
> > 
> > Signed-off-by: Andreas Kemnade <andreas@...nade.info>
> > ---
> >  Documentation/devicetree/bindings/gnss/sirfstar.txt | 1 +
> >  1 file changed, 1 insertion(+)
> > 
> > diff --git a/Documentation/devicetree/bindings/gnss/sirfstar.txt b/Documentation/devicetree/bindings/gnss/sirfstar.txt
> > index 1be7597ae884..9614774d14bc 100644
> > --- a/Documentation/devicetree/bindings/gnss/sirfstar.txt
> > +++ b/Documentation/devicetree/bindings/gnss/sirfstar.txt
> > @@ -30,6 +30,7 @@ Optional properties:
> >  - sirf,wakeup-gpios	: GPIO used to determine device power state
> >  			  (pin name: RFPWRUP, WAKEUP)
> >  - timepulse-gpios	: Time pulse GPIO (pin name: 1PPS, TM)
> > +- lna-supply		: Separate supply for a LNA  
> 
> "Supply for external LNA"?
> 
"External" might be misleading:
- not part of the gps chip itself: yes
- but might also be inside of the device.

In case of the GTA04 this includes power supply for an antenna switch
(operates by plug detection) + internal or external antenna.

Regards,
Andreas

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