[PATCH v3] ARM: dts: stm32: Add ADC support to stm32mp157c

stm32mp157c has an ADC block with two physical ADCs.

Signed-off-by: Fabrice Gasnier <redacted>
---
Changes in v3:
- Add dmas since dmamux1 has been added on top of stm32-next
---
  arch/arm/boot/dts/stm32mp157c.dtsi | 36 ++++++++++++++++++++++++++++++++++++
  1 file changed, 36 insertions(+)

diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index b66f673..66d7496 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi

@@ -600,6 +600,42 @@
  			clocks = <&rcc DMAMUX>;
  		};
  
+		adc: adc at 48003000 {
+			compatible = "st,stm32mp1-adc-core";
+			reg = <0x48003000 0x400>;
+			interrupts = <GIC_SPI 18 IRQ_TYPE_LEVEL_HIGH>,
+				     <GIC_SPI 90 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&rcc ADC12>, <&rcc ADC12_K>;
+			clock-names = "bus", "adc";
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+			adc1: adc at 0 {
+				compatible = "st,stm32mp1-adc";
+				#io-channel-cells = <1>;
+				reg = <0x0>;
+				interrupt-parent = <&adc>;
+				interrupts = <0>;
+				dmas = <&dmamux1 9 0x400 0x01>;
+				dma-names = "rx";
+				status = "disabled";
+			};
+
+			adc2: adc at 100 {
+				compatible = "st,stm32mp1-adc";
+				#io-channel-cells = <1>;
+				reg = <0x100>;
+				interrupt-parent = <&adc>;
+				interrupts = <1>;
+				dmas = <&dmamux1 10 0x400 0x01>;
+				dma-names = "rx";
+				status = "disabled";
+			};
+		};
+
  		rcc: rcc at 50000000 {
  			compatible = "st,stm32mp1-rcc", "syscon";
  			reg = <0x50000000 0x1000>;