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+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/samsung,exynos-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Samsung Exynos Analog to Digital Converter (ADC)
+
+maintainers:
+ - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+ compatible:
+ enum:
+ - samsung,exynos-adc-v1 # Exynos5250
+ - samsung,exynos-adc-v2
+ - samsung,exynos3250-adc
+ - samsung,exynos4212-adc # Exynos4212 and Exynos4412
+ - samsung,exynos7-adc
+ - samsung,s3c2410-adc
+ - samsung,s3c2416-adc
+ - samsung,s3c2440-adc
+ - samsung,s3c2443-adc
+ - samsung,s3c6410-adc
+ - samsung,s5pv210-adc
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ description:
+ Phandle to ADC bus clock. For Exynos3250 additional clock is needed.
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ description:
+ Must contain clock names (adc, sclk) matching phandles in clocks
+ property.
+ minItems: 1
+ maxItems: 2
+
+ interrupts:
+ description:
+ ADC interrupt followed by optional touchscreen interrupt.
+ minItems: 1
+ maxItems: 2
+
+ "#io-channel-cells":
+ const: 1
+
+ vdd-supply: true
+
+ samsung,syscon-phandle:
+ $ref: '/schemas/types.yaml#/definitions/phandle'
+ description:
+ Phandle to the PMU system controller node (to access the ADC_PHY
+ register on Exynos3250/4x12/5250/5420/5800).
+
+ has-touchscreen:
+ description:
+ If present, indicates that a touchscreen is connected and usable.
+ type: boolean
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+ - "#io-channel-cells"
+ - vdd-supply
+
+additionalProperties:
+ type: object
+
+allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,exynos-adc-v1
+ - samsung,exynos-adc-v2
+ - samsung,exynos3250-adc
+ - samsung,exynos4212-adc
+ then:
+ required:
+ - samsung,syscon-phandle
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - samsung,exynos3250-adc
+ then:
+ properties:
+ clocks:
+ minItems: 2
+ maxItems: 2
+ clock-names:
+ items:
+ - const: adc
+ - const: sclk
+ else:
+ properties:
+ clocks:
+ minItems: 1
+ maxItems: 1
+ clock-names:
+ items:
+ - const: adc
+
+ - if:
+ required:
+ - has-touchscreen
+ then:
+ properties:
+ interrupts:
+ minItems: 2
+ maxItems: 2
+
+examples:
+ - |
+ adc: adc@12d10000 {
+ compatible = "samsung,exynos-adc-v1";
+ reg = <0x12d10000 0x100>;
+ interrupts = <0 106 0>;
+ #io-channel-cells = <1>;
+
+ clocks = <&clock 303>;
+ clock-names = "adc";
+
+ vdd-supply = <&buck5_reg>;
+ samsung,syscon-phandle = <&pmu_system_controller>;
+
+ /* NTC thermistor is a hwmon device */
+ thermistor {
+ compatible = "murata,ncp15wb473";
+ pullup-uv = <1800000>;
+ pullup-ohm = <47000>;
+ pulldown-ohm = <0>;
+ io-channels = <&adc 4>;
+ };
+ };
+
+ - |
+ #include <dt-bindings/clock/exynos3250.h>
+
+ adc@126c0000 {
+ compatible = "samsung,exynos3250-adc";
+ reg = <0x126C0000 0x100>;
+ interrupts = <0 137 0>;
+ #io-channel-cells = <1>;
+
+ clocks = <&cmu CLK_TSADC>,
+ <&cmu CLK_SCLK_TSADC>;
+ clock-names = "adc", "sclk";
+
+ vdd-supply = <&buck5_reg>;
+ samsung,syscon-phandle = <&pmu_system_controller>;
+ };