1 files changed, 120 insertions, 0 deletions
diff --git a/dts/Bindings/iio/adc/sprd,sc2720-adc.yaml b/dts/Bindings/iio/adc/sprd,sc2720-adc.yaml
new file mode 100644
index 0000000000..8181cf9a8e
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+++ b/dts/Bindings/iio/adc/sprd,sc2720-adc.yaml
@@ -0,0 +1,120 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/adc/sprd,sc2720-adc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Spreadtrum SC27XX series PMICs ADC
+
+maintainers:
+  - Baolin Wang <baolin.wang7@gmail.com>
+
+description:
+  Supports the ADC found on these PMICs.
+
+properties:
+  compatible:
+    enum:
+      - sprd,sc2720-adc
+      - sprd,sc2721-adc
+      - sprd,sc2723-adc
+      - sprd,sc2730-adc
+      - sprd,sc2731-adc
+      - sprd,ump9620-adc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  "#io-channel-cells":
+    const: 1
+
+  hwlocks:
+    maxItems: 1
+
+  nvmem-cells: true
+
+  nvmem-cell-names: true
+
+allOf:
+  - if:
+      not:
+        properties:
+          compatible:
+            contains:
+              enum:
+                - sprd,ump9620-adc
+    then:
+      properties:
+        nvmem-cells:
+          maxItems: 2
+        nvmem-cell-names:
+          items:
+            - const: big_scale_calib
+            - const: small_scale_calib
+
+    else:
+      properties:
+        nvmem-cells:
+          maxItems: 6
+        nvmem-cell-names:
+          items:
+            - const: big_scale_calib1
+            - const: big_scale_calib2
+            - const: small_scale_calib1
+            - const: small_scale_calib2
+            - const: vbat_det_cal1
+            - const: vbat_det_cal2
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - "#io-channel-cells"
+  - hwlocks
+  - nvmem-cells
+  - nvmem-cell-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    pmic {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        adc@480 {
+            compatible = "sprd,sc2731-adc";
+            reg = <0x480>;
+            interrupt-parent = <&sc2731_pmic>;
+            interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+            #io-channel-cells = <1>;
+            hwlocks = <&hwlock 4>;
+            nvmem-cells = <&adc_big_scale>, <&adc_small_scale>;
+            nvmem-cell-names = "big_scale_calib", "small_scale_calib";
+        };
+    };
+
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    pmic {
+        #address-cells = <1>;
+        #size-cells = <0>;
+        adc@504 {
+            compatible = "sprd,ump9620-adc";
+            reg = <0x504>;
+            interrupt-parent = <&ump9620_pmic>;
+            interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
+            #io-channel-cells = <1>;
+            hwlocks = <&hwlock 4>;
+            nvmem-cells = <&adc_bcal1>, <&adc_bcal2>,
+                          <&adc_scal1>, <&adc_scal2>,
+                          <&vbat_det_cal1>, <&vbat_det_cal2>;
+            nvmem-cell-names = "big_scale_calib1", "big_scale_calib2",
+                               "small_scale_calib1", "small_scale_calib2",
+                               "vbat_det_cal1", "vbat_det_cal2";
+        };
+    };
+...