linux-kernel - Re: [PATCH 0/4] mfd: rn5t618: Extend ADC support

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Message-ID: <20210703183932.75c7012a@aktux>
Date:   Sat, 3 Jul 2021 18:39:40 +0200
From:   Andreas Kemnade <andreas@...nade.info>
To:     Jonathan Cameron <jic23@...nel.org>
Cc:     lee.jones@...aro.org, robh+dt@...nel.org, lars@...afoo.de,
        sre@...nel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-iio@...r.kernel.org,
        linux-pm@...r.kernel.org, leonard.crestez@....com,
        letux-kernel@...nphoenux.org
Subject: Re: [PATCH 0/4] mfd: rn5t618: Extend ADC support

Hi,

On Sat, 3 Jul 2021 16:59:50 +0100
Jonathan Cameron <jic23@...nel.org> wrote:

> On Sat,  3 Jul 2021 10:42:20 +0200
> Andreas Kemnade <andreas@...nade.info> wrote:
> 
> > Add devicetree support so that consumers can reference the channels
> > via devicetree, especially the power subdevice can make use of that
> > to provide voltage_now properties.  
> 
> Does the mapping vary from board to board?  Often these mappings are
> internal to the chip so might as well be provided hard coded in the
> relevant drivers rather than via DT. See drivers that have iio_map
> structure arrays.
> 
Most things are internal to the chip, but 
AIN1/AIN0 are external and could be connected to anything.

Regards,
Andreas