[1/4] dt-bindings: regulator: add support for the stm32-booster
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Message ID 1561709289-11174-2-git-send-email-fabrice.gasnier@st.com
State Superseded
Headers show
  • regulator: add support for the STM32 ADC booster
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Commit Message

Fabrice Gasnier June 28, 2019, 8:08 a.m. UTC
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

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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.
+	booster: regulator-booster {
+		compatible = "st,stm32mp1-booster";
+		st,syscfg = <&syscfg>;
+		vdda-supply = <&vdda>;
+	};