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 1/3] dt-bindings: iio: adc: stm32: add analog switches supply control
Date: Wed, 12 Jun 2019 09:24:34 +0200 [thread overview]
Message-ID: <1560324276-681-2-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1560324276-681-1-git-send-email-fabrice.gasnier@st.com>
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).
Add documentation for optional vdda-supply & vdd-supply that can be used
to supply analog circuitry (controlled by syscfg bits).
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
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 8346bcb..3af48b9 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
@@ -46,6 +46,12 @@ 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.
+- vdda-supply: Phandle to the vdda input voltage. It can be used to supply ADC
+ analog inputs switches on stm32h7 and stm32mp1.
+- vdd-supply: Phandle to the vdd input voltage. It can be used to supply ADC
+ analog inputs switches on stm32mp1.
+- st,syscfg: Phandle to system configuration controller. It can be used to
+ control the analog circuitry on stm32h7 and stm32mp1.
Contents of a stm32 adc child node:
-----------------------------------
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Fabrice Gasnier <fabrice.gasnier@st.com>
To: jic23@kernel.org, robh+dt@kernel.org, alexandre.torgue@st.com
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
lars@metafoo.de, mcoquelin.stm32@gmail.com,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
pmeerw@pmeerw.net, knaack.h@gmx.de, fabrice.gasnier@st.com,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] dt-bindings: iio: adc: stm32: add analog switches supply control
Date: Wed, 12 Jun 2019 09:24:34 +0200 [thread overview]
Message-ID: <1560324276-681-2-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1560324276-681-1-git-send-email-fabrice.gasnier@st.com>
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).
Add documentation for optional vdda-supply & vdd-supply that can be used
to supply analog circuitry (controlled by syscfg bits).
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
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 8346bcb..3af48b9 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
@@ -46,6 +46,12 @@ 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.
+- vdda-supply: Phandle to the vdda input voltage. It can be used to supply ADC
+ analog inputs switches on stm32h7 and stm32mp1.
+- vdd-supply: Phandle to the vdd input voltage. It can be used to supply ADC
+ analog inputs switches on stm32mp1.
+- st,syscfg: Phandle to system configuration controller. It can be used to
+ control the analog circuitry on stm32h7 and stm32mp1.
Contents of a stm32 adc child node:
-----------------------------------
--
2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: Fabrice Gasnier <fabrice.gasnier@st.com>
To: <jic23@kernel.org>, <robh+dt@kernel.org>, <alexandre.torgue@st.com>
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
lars@metafoo.de, mcoquelin.stm32@gmail.com,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org,
pmeerw@pmeerw.net, knaack.h@gmx.de, fabrice.gasnier@st.com,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] dt-bindings: iio: adc: stm32: add analog switches supply control
Date: Wed, 12 Jun 2019 09:24:34 +0200 [thread overview]
Message-ID: <1560324276-681-2-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1560324276-681-1-git-send-email-fabrice.gasnier@st.com>
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).
Add documentation for optional vdda-supply & vdd-supply that can be used
to supply analog circuitry (controlled by syscfg bits).
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
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 8346bcb..3af48b9 100644
--- a/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
+++ b/Documentation/devicetree/bindings/iio/adc/st,stm32-adc.txt
@@ -46,6 +46,12 @@ 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.
+- vdda-supply: Phandle to the vdda input voltage. It can be used to supply ADC
+ analog inputs switches on stm32h7 and stm32mp1.
+- vdd-supply: Phandle to the vdd input voltage. It can be used to supply ADC
+ analog inputs switches on stm32mp1.
+- st,syscfg: Phandle to system configuration controller. It can be used to
+ control the analog circuitry on stm32h7 and stm32mp1.
Contents of a stm32 adc child node:
-----------------------------------
--
2.7.4
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next prev parent reply other threads:[~2019-06-12 7:25 UTC|newest]
Thread overview: 30+ 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 ` Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier [this message]
2019-06-12 7:24 ` [PATCH 1/3] dt-bindings: iio: adc: stm32: add " Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier
2019-06-16 15:12 ` Jonathan Cameron
2019-06-16 15:12 ` Jonathan Cameron
2019-06-16 15:12 ` Jonathan Cameron
2019-06-12 7:24 ` [PATCH 2/3] iio: adc: stm32-adc: " Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier
2019-06-16 15:07 ` Jonathan Cameron
2019-06-16 15:07 ` Jonathan Cameron
2019-06-16 15:07 ` Jonathan Cameron
2019-06-17 12:43 ` Fabrice Gasnier
2019-06-17 12:43 ` Fabrice Gasnier
2019-06-17 12:43 ` Fabrice Gasnier
2019-06-19 12:38 ` Fabrice Gasnier
2019-06-19 12:38 ` Fabrice Gasnier
2019-06-19 12:38 ` Fabrice Gasnier
2019-06-22 11:05 ` Jonathan Cameron
2019-06-22 11:05 ` Jonathan Cameron
2019-06-22 11:05 ` Jonathan Cameron
2019-06-28 8:17 ` Fabrice Gasnier
2019-06-28 8:17 ` Fabrice Gasnier
2019-06-28 8:17 ` Fabrice Gasnier
2019-06-12 7:24 ` [PATCH 3/3] ARM: dts: stm32: add ADC analog switches syscfg on stm32mp157c Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier
2019-06-12 7:24 ` Fabrice Gasnier
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