@@ -1093,6 +1093,8 @@ adc: adc@48003000 {
adc1: adc@0 {
compatible = "st,stm32mp1-adc";
#io-channel-cells = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
reg = <0x0>;
interrupt-parent = <&adc>;
interrupts = <0>;
@@ -1104,12 +1106,22 @@ adc1: adc@0 {
adc2: adc@100 {
compatible = "st,stm32mp1-adc";
#io-channel-cells = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
reg = <0x100>;
interrupt-parent = <&adc>;
interrupts = <1>;
dmas = <&dmamux1 10 0x400 0x01>;
dma-names = "rx";
status = "disabled";
+ channel@13 {
+ reg = <13>;
+ label = "vrefint";
+ };
+ channel@14 {
+ reg = <14>;
+ label = "vddcore";
+ };
};
};
Add STM32 ADC2 internal channels VREFINT and VDDCORE to STM32MP15x SoCs. VBAT internal channel is not defined by default in SoC DT, and has be defined in board DT when needed, instead. This avoids unwanted current consumption on battery, when ADC conversions are performed on any other channels. The internal channels are defined in STM32MP15 SoC DT according to the generic IIO channel bindings. The STM32 driver does not support a mixed use of legacy and generic channels. When generic channels are defined, legacy channels are ignored. This involves that the board device trees using legacy bindings for ADC2, have to be reworked. Signed-off-by: Olivier Moysan <olivier.moysan@foss.st.com> --- arch/arm/boot/dts/stm32mp151.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+)