From: Jonathan Cameron <jic23@kernel•org>
To: Fabrice Gasnier <fabrice.gasnier@st•com>
Cc: mark.rutland@arm•com, devicetree@vger•kernel.org,
lars@metafoo•de, alexandre.torgue@st•com,
linux-iio@vger•kernel.org, pmeerw@pmeerw•net,
linux-kernel@vger•kernel.org, robh+dt@kernel•org,
mcoquelin.stm32@gmail•com, knaack.h@gmx•de,
linux-stm32@st-md-mailman•stormreply.com,
linux-arm-kernel@lists•infradead.org
Subject: Re: [PATCH v2 1/3] dt-bindings: iio: adc: stm32: add analog switches supply control
Date: Sun, 14 Jul 2019 17:11:41 +0100 [thread overview]
Message-ID: <20190714171141.12fc2d1d@archlinux> (raw)
In-Reply-To: <1562148496-26789-2-git-send-email-fabrice.gasnier@st.com>
On Wed, 3 Jul 2019 12:08:14 +0200
Fabrice Gasnier <fabrice.gasnier@st•com> wrote:
> On stm32h7 and stm32mp1, the ADC inputs are multiplexed with analog
> switches which have reduced performances when their supply is below 2.7V
> (vdda by default). Booster or vdd can be used, to get full ADC
> performances.
>
> Add documentation for:
> - optional booster-supply that can be used on stm32h7 and stm32mp1.
> - optional vdd-supply that can be used on stm32mp1 to supply analog
> circuitry, selected by syscfg.
> Mark these as optional, since this is a trade-off between analog
> performance and power consumption.
>
> Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st•com>
Seems fine to me. Applied to the togreg branch of iio.git and pushed out
as testing for the autobuilders to play with it.
Thanks,
Jonathan
> ---
> Changes in v2:
> - Rework since: "Add missing vdda-supply to STM32 ADC" series.
> - Add booster-supply regulator description
> - typo: input switches
> ---
> Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt | 6 ++++++
> 1 file changed, 6 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
> index 93a0bd2..4c0da8c 100644
> --- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
> +++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
> @@ -47,6 +47,12 @@ Required properties:
> Optional properties:
> - A pinctrl state named "default" for each ADC channel may be defined to set
> inX ADC pins in mode of operation for analog input on external pin.
> +- booster-supply: Phandle to the embedded booster regulator that can be used
> + to supply ADC analog input switches on stm32h7 and stm32mp1.
> +- vdd-supply: Phandle to the vdd input voltage. It can be used to supply ADC
> + analog input switches on stm32mp1.
> +- st,syscfg: Phandle to system configuration controller. It can be used to
> + control the analog circuitry on stm32mp1.
>
> Contents of a stm32 adc child node:
> -----------------------------------
_______________________________________________
linux-arm-kernel mailing list
linux-arm-kernel@lists•infradead.org
http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2019-07-14 16:12 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-03 10:08 [PATCH v2 0/3] STM32 ADC analog switches supply control Fabrice Gasnier
2019-07-03 10:08 ` [PATCH v2 1/3] dt-bindings: iio: adc: stm32: add " Fabrice Gasnier
2019-07-14 16:11 ` Jonathan Cameron [this message]
2019-07-03 10:08 ` [PATCH v2 2/3] iio: adc: stm32-adc: " Fabrice Gasnier
2019-07-14 16:12 ` Jonathan Cameron
2019-07-03 10:08 ` [PATCH v2 3/3] ARM: dts: stm32: add syscfg to ADC on stm32mp157c Fabrice Gasnier
2019-07-14 16:13 ` Jonathan Cameron
2019-07-15 7:01 ` Fabrice Gasnier
2019-07-29 7:23 ` Alexandre Torgue
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20190714171141.12fc2d1d@archlinux \
--to=jic23@kernel$(echo .)org \
--cc=alexandre.torgue@st$(echo .)com \
--cc=devicetree@vger$(echo .)kernel.org \
--cc=fabrice.gasnier@st$(echo .)com \
--cc=knaack.h@gmx$(echo .)de \
--cc=lars@metafoo$(echo .)de \
--cc=linux-arm-kernel@lists$(echo .)infradead.org \
--cc=linux-iio@vger$(echo .)kernel.org \
--cc=linux-kernel@vger$(echo .)kernel.org \
--cc=linux-stm32@st-md-mailman$(echo .)stormreply.com \
--cc=mark.rutland@arm$(echo .)com \
--cc=mcoquelin.stm32@gmail$(echo .)com \
--cc=pmeerw@pmeerw$(echo .)net \
--cc=robh+dt@kernel$(echo .)org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox