From: Fabrice Gasnier <fabrice.gasnier@st.com>
To: <jic23@kernel.org>, <robh+dt@kernel.org>, <alexandre.torgue@st.com>
Cc: <mark.rutland@arm.com>, <mcoquelin.stm32@gmail.com>,
<lars@metafoo.de>, <knaack.h@gmx.de>, <pmeerw@pmeerw.net>,
<fabrice.gasnier@st.com>, <linux-iio@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH 3/3] ARM: dts: stm32: add ADC analog switches syscfg on stm32mp157c
Date: Wed, 12 Jun 2019 09:24:36 +0200 [thread overview]
Message-ID: <1560324276-681-4-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1560324276-681-1-git-send-email-fabrice.gasnier@st.com>
On stm32mp157c, the ADC inputs are multiplexed with analog switches which
have reduced performances when their supply is below 2.7V (vdda by
default).
Add syscfg registers that can be used on stm32mp157c, to get full ADC
analog performances.
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
arch/arm/boot/dts/stm32mp157c.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index 2afeee6..64d71c9 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi
@@ -856,6 +856,7 @@
clocks = <&rcc ADC12>, <&rcc ADC12_K>;
clock-names = "bus", "adc";
interrupt-controller;
+ st,syscfg = <&syscfg>;
#interrupt-cells = <1>;
#address-cells = <1>;
#size-cells = <0>;
--
2.7.4
prev parent reply other threads:[~2019-06-12 7:25 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-12 7:24 [PATCH 0/3] STM32 ADC analog switches supply control Fabrice Gasnier
2019-06-12 7:24 ` [PATCH 1/3] dt-bindings: iio: adc: stm32: add " Fabrice Gasnier
2019-06-16 15:12 ` Jonathan Cameron
2019-06-12 7:24 ` [PATCH 2/3] iio: adc: stm32-adc: " Fabrice Gasnier
2019-06-16 15:07 ` Jonathan Cameron
2019-06-17 12:43 ` Fabrice Gasnier
2019-06-19 12:38 ` Fabrice Gasnier
2019-06-22 11:05 ` Jonathan Cameron
2019-06-28 8:17 ` Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier [this message]
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=1560324276-681-4-git-send-email-fabrice.gasnier@st.com \
--to=fabrice.gasnier@st.com \
--cc=alexandre.torgue@st.com \
--cc=devicetree@vger.kernel.org \
--cc=jic23@kernel.org \
--cc=knaack.h@gmx.de \
--cc=lars@metafoo.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-stm32@st-md-mailman.stormreply.com \
--cc=mark.rutland@arm.com \
--cc=mcoquelin.stm32@gmail.com \
--cc=pmeerw@pmeerw.net \
--cc=robh+dt@kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
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;
as well as URLs for NNTP newsgroup(s).