dt-bindings: mfd: pm8008: Add bindings

Add bindings for the Qualcomm Technologies, Inc. PM8008 MFD driver.
Signed-off-by: Guru Das Srinagesh <gurus@codeaurora.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

Documentation/devicetree/bindings/mfd/qcom,pm8008.yaml

+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/qcom,pm8008.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Technologies, Inc. PM8008 PMIC bindings
+
+maintainers:
+  - Guru Das Srinagesh <gurus@codeaurora.org>
+
+description: |
+  Qualcomm Technologies, Inc. PM8008 is a dedicated camera PMIC that integrates
+  all the necessary power management, housekeeping, and interface support
+  functions into a single IC.
+
+properties:
+  compatible:
+    const: qcom,pm8008
+
+  reg:
+    description:
+      I2C slave address.
+
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+    description: Parent interrupt.
+
+  "#interrupt-cells":
+    const: 2
+
+    description: |
+      The first cell is the IRQ number, the second cell is the IRQ trigger
+      flag. All interrupts are listed in include/dt-bindings/mfd/qcom-pm8008.h.
+
+  interrupt-controller: true
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^gpio@[0-9a-f]+$":
+    type: object
+
+    description: |
+      The GPIO peripheral. This node may be specified twice, one for each GPIO.
+
+    properties:
+      compatible:
+        const: qcom,pm8008-gpio
+
+      reg:
+        description: Peripheral address of one of the two GPIO peripherals.
+        maxItems: 1
+
+      gpio-controller: true
+
+      interrupt-controller: true
+
+      "#interrupt-cells":
+        const: 2
+
+      "#gpio-cells":
+        const: 2
+
+    required:
+      - compatible
+      - reg
+      - gpio-controller
+      - interrupt-controller
+      - "#gpio-cells"
+      - "#interrupt-cells"
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - "#address-cells"
+  - "#size-cells"
+  - "#interrupt-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/mfd/qcom-pm8008.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    qupv3_se13_i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+      pm8008i@8 {
+        compatible = "qcom,pm8008";
+        reg = <0x8>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        interrupt-controller;
+        #interrupt-cells = <2>;
+
+        interrupt-parent = <&tlmm>;
+        interrupts = <32 IRQ_TYPE_EDGE_RISING>;
+
+        gpio@c000 {
+          compatible = "qcom,pm8008-gpio";
+          reg = <0xc000>;
+          gpio-controller;
+          #gpio-cells = <2>;
+          interrupt-controller;
+          #interrupt-cells = <2>;
+        };
+      };
+    };
+
+...