linux-kernel - [PATCH 1/2] ARM: dts: stm32: add ADC support on stm32h7

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Date:   Tue, 11 Jul 2017 18:13:09 +0200
From:   Fabrice Gasnier <fabrice.gasnier@...com>
To:     <alexandre.torgue@...com>, <robh+dt@...nel.org>
CC:     <mcoquelin.stm32@...il.com>, <linux@...linux.org.uk>,
        <mark.rutland@....com>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <fabrice.gasnier@...com>
Subject: [PATCH 1/2] ARM: dts: stm32: add ADC support on stm32h7

Add support for ADC (Analog to Digital Converter) to STM32H7.
It has 3 ADCs, distributed over two ADC blocks:
- ADC1 and ADC2 @0x40022000
- ADC3 @0x58026000 (instantiated separately)

Signed-off-by: Fabrice Gasnier <fabrice.gasnier@...com>
---
 arch/arm/boot/dts/stm32h743.dtsi | 53 ++++++++++++++++++++++++++++++++++++++++
 1 file changed, 53 insertions(+)

diff --git a/arch/arm/boot/dts/stm32h743.dtsi b/arch/arm/boot/dts/stm32h743.dtsi
index 4685629..bc47119 100644
--- a/arch/arm/boot/dts/stm32h743.dtsi
+++ b/arch/arm/boot/dts/stm32h743.dtsi
@@ -74,6 +74,59 @@
 			interrupts = <50>;
 			clocks = <&timer_clk>;
 		};
+
+		adc_12: adc@...22000 {
+			compatible = "st,stm32h7-adc-core";
+			reg = <0x40022000 0x400>;
+			interrupts = <18>;
+			clocks = <&timer_clk>;
+			clock-names = "bus";
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+			adc1: adc@0 {
+				compatible = "st,stm32h7-adc";
+				#io-channel-cells = <1>;
+				reg = <0x0>;
+				interrupt-parent = <&adc_12>;
+				interrupts = <0>;
+				status = "disabled";
+			};
+
+			adc2: adc@100 {
+				compatible = "st,stm32h7-adc";
+				#io-channel-cells = <1>;
+				reg = <0x100>;
+				interrupt-parent = <&adc_12>;
+				interrupts = <1>;
+				status = "disabled";
+			};
+		};
+
+		adc_3: adc@...26000 {
+			compatible = "st,stm32h7-adc-core";
+			reg = <0x58026000 0x400>;
+			interrupts = <127>;
+			clocks = <&timer_clk>;
+			clock-names = "bus";
+			interrupt-controller;
+			#interrupt-cells = <1>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+			adc3: adc@0 {
+				compatible = "st,stm32h7-adc";
+				#io-channel-cells = <1>;
+				reg = <0x0>;
+				interrupt-parent = <&adc_3>;
+				interrupts = <0>;
+				status = "disabled";
+			};
+		};
 	};
 };
 
-- 
1.9.1