dts: arm: st: add default clock source for asynchronous ADC

For STM32L1, U5 and WBA, the ADC always uses an asynchronous clock source,
so we add the default clock source in the clock node.

Signed-off-by: Guillaume Gautier <[email protected]>

Author: gautierg-st

dts/arm/st/l1/stm32l1.dtsi

@@ -216,7 +216,8 @@
 		adc1: adc@40012400 {
 			compatible = "st,stm32f4-adc", "st,stm32-adc";
 			reg = <0x40012400 0x400>;
-			clocks = <&rcc STM32_CLOCK_BUS_APB2 0x00000200>;
+			clocks = <&rcc STM32_CLOCK_BUS_APB2 0x00000200>,
+				 <&rcc STM32_SRC_HSI NO_SEL>;
 			interrupts = <18 0>;
 			status = "disabled";
 			#io-channel-cells = <1>;

dts/arm/st/u5/stm32u5.dtsi

@@ -781,7 +781,8 @@
 		adc1: adc@42028000 {
 			compatible = "st,stm32-adc";
 			reg = <0x42028000 0x400>;
-			clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00000400>;
+			clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00000400>,
+				 <&rcc STM32_SRC_HCLK ADCDAC_SEL(0)>;
 			interrupts = <37 0>;
 			status = "disabled";
 			#io-channel-cells = <1>;
@@ -797,7 +798,8 @@
 		adc4: adc@46021000 {
 			compatible = "st,stm32-adc";
 			reg = <0x46021000 0x400>;
-			clocks = <&rcc STM32_CLOCK_BUS_AHB3 0x00000020>;
+			clocks = <&rcc STM32_CLOCK_BUS_AHB3 0x00000020>,
+				 <&rcc STM32_SRC_HCLK ADCDAC_SEL(0)>;
 			interrupts = <113 0>;
 			status = "disabled";
 			#io-channel-cells = <1>;

dts/arm/st/u5/stm32u595.dtsi

@@ -64,7 +64,8 @@
 		adc2: adc@42028100 {
 			compatible = "st,stm32-adc";
 			reg = <0x42028100 0x400>;
-			clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00000400>;
+			clocks = <&rcc STM32_CLOCK_BUS_AHB2 0x00000400>,
+				 <&rcc STM32_SRC_HCLK ADCDAC_SEL(0)>;
 			interrupts = <37 0>;
 			status = "disabled";
 			#io-channel-cells = <1>;

dts/arm/st/wba/stm32wba.dtsi

@@ -413,7 +413,8 @@
 		adc4: adc@46021000 {
 			compatible = "st,stm32-adc";
 			reg = <0x46021000 0x400>;
-			clocks = <&rcc STM32_CLOCK_BUS_AHB4 0x00000020>;
+			clocks = <&rcc STM32_CLOCK_BUS_AHB4 0x00000020>,
+				 <&rcc STM32_SRC_HCLK1 ADC_SEL(0)>;
 			interrupts = <65 0>;
 			status = "disabled";
 			#io-channel-cells = <1>;