From: Fabrice Gasnier <fabrice.gasnier@st.com>
To: <broonie@kernel.org>, <lgirdwood@gmail.com>, <robh+dt@kernel.org>,
<alexandre.torgue@st.com>
Cc: <mcoquelin.stm32@gmail.com>, <fabrice.gasnier@st.com>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>,
<linux-stm32@st-md-mailman.stormreply.com>,
<devicetree@vger.kernel.org>
Subject: [PATCH 1/4] dt-bindings: regulator: add support for the stm32-booster
Date: Fri, 28 Jun 2019 10:08:06 +0200 [thread overview]
Message-ID: <1561709289-11174-2-git-send-email-fabrice.gasnier@st.com> (raw)
In-Reply-To: <1561709289-11174-1-git-send-email-fabrice.gasnier@st.com>
Document the 3.3V booster regulator embedded in stm32h7 and stm32mp1
devices, that can be used to supply ADC analog input switches.
It's controlled by using system configuration registers (SYSCFG).
Introduce two compatibles as the booster regulator is controlled by:
- a unique register/bit in STM32H7
- a set/clear register pair in STM32MP1
Signed-off-by: Fabrice Gasnier <fabrice.gasnier@st.com>
---
.../devicetree/bindings/regulator/st,stm32-booster.txt | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/st,stm32-booster.txt
diff --git a/Documentation/devicetree/bindings/regulator/st,stm32-booster.txt b/Documentation/devicetree/bindings/regulator/st,stm32-booster.txt
new file mode 100644
index 0000000..479ad4c
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/st,stm32-booster.txt
@@ -0,0 +1,18 @@
+STM32 BOOSTER - Booster for ADC analog input switches
+
+Some STM32 devices embed a 3.3V booster supplied by Vdda, that can be used
+to supply ADC analog input switches.
+
+Required properties:
+- compatible: Should be one of:
+ "st,stm32h7-booster"
+ "st,stm32mp1-booster"
+- st,syscfg: Phandle to system configuration controller.
+- vdda-supply: Phandle to the vdda input analog voltage.
+
+Example:
+ booster: regulator-booster {
+ compatible = "st,stm32mp1-booster";
+ st,syscfg = <&syscfg>;
+ vdda-supply = <&vdda>;
+ };
--
2.7.4
next prev parent reply other threads:[~2019-06-28 8:08 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-06-28 8:08 [PATCH 0/4] regulator: add support for the STM32 ADC booster Fabrice Gasnier
2019-06-28 8:08 ` Fabrice Gasnier [this message]
2019-06-28 8:08 ` [PATCH 2/4] regulator: add support for the stm32-booster Fabrice Gasnier
2019-06-28 14:32 ` Mark Brown
2019-06-28 8:08 ` [PATCH 3/4] ARM: multi_v7_defconfig: enable STM32 booster regulator Fabrice Gasnier
2019-06-28 8:08 ` [PATCH 4/4] ARM: dts: stm32: add booster for ADC analog switches on stm32mp157c Fabrice Gasnier
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