ARM: at91: Add ADC driver to at91sam9260/at91sam9g20 dtsi files

Now that the bulk of at91sam9g20-related nodes are located in at91sam9260.dtsi,
we have to re-create the path to this ADC node for SoC specific parts.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

arch/arm/boot/dts/at91sam9260.dtsi

@@ -197,6 +197,41 @@
 				interrupts = <10 4>;
 				status = "disabled";
 			};
+
+			adc0: adc@fffe0000 {
+				compatible = "atmel,at91sam9260-adc";
+				reg = <0xfffe0000 0x100>;
+				interrupts = <5 4>;
+				atmel,adc-use-external-triggers;
+				atmel,adc-channels-used = <0xf>;
+				atmel,adc-vref = <3300>;
+				atmel,adc-num-channels = <4>;
+				atmel,adc-startup-time = <15>;
+				atmel,adc-channel-base = <0x30>;
+				atmel,adc-drdy-mask = <0x10000>;
+				atmel,adc-status-register = <0x1c>;
+				atmel,adc-trigger-register = <0x04>;
+
+				trigger@0 {
+					trigger-name = "timer-counter-0";
+					trigger-value = <0x1>;
+				};
+				trigger@1 {
+					trigger-name = "timer-counter-1";
+					trigger-value = <0x3>;
+				};
+
+				trigger@2 {
+					trigger-name = "timer-counter-2";
+					trigger-value = <0x5>;
+				};
+
+				trigger@3 {
+					trigger-name = "external";
+					trigger-value = <0x13>;
+					trigger-external;
+				};
+			};
 		};
 
 		nand0: nand@40000000 {

arch/arm/boot/dts/at91sam9g20.dtsi

@@ -15,4 +15,12 @@
 	memory {
 		reg = <0x20000000 0x08000000>;
 	};
+
+	ahb {
+		apb {
+			adc0: adc@fffe0000 {
+				atmel,adc-startup-time = <40>;
+			};
+		};
+	};
 };