[PATCH RFC 1/6] dt-bindings: mfd: Add Renesas RAA215300 PMIC bindings

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Document Renesas RAA215300 PMIC bindings.

The RAA215300 is a high Performance 9-Channel PMIC supporting DDR
Memory, with Built-In Charger and RTC.

It supports DDR3, DDR3L, DDR4, and LPDDR4 memory power requirements.
The internally compensated regulators, built-in Real-Time Clock (RTC),
32kHz crystal oscillator, and coin cell battery charger provide a
highly integrated, small footprint power solution ideal for
System-On-Module (SOM) applications. A spread spectrum feature
provides an ease-of-use solution for noise-sensitive audio or RF
applications.

Signed-off-by: Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
---
 .../bindings/mfd/renesas,raa215300.yaml       | 57 +++++++++++++++++++
 1 file changed, 57 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mfd/renesas,raa215300.yaml

diff --git a/Documentation/devicetree/bindings/mfd/renesas,raa215300.yaml b/Documentation/devicetree/bindings/mfd/renesas,raa215300.yaml
new file mode 100644
index 000000000000..1e65f7618333
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/renesas,raa215300.yaml
@@ -0,0 +1,57 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/renesas,raa215300.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Renesas RAA215300 Power Management Integrated Circuit (PMIC)
+
+maintainers:
+  - Biju Das <biju.das.jz@xxxxxxxxxxxxxx>
+
+description: |
+  The RAA215300 is a high-performance, low-cost 9-channel PMIC designed for
+  32-bit and 64-bit MCU and MPU applications. It supports DDR3, DDR3L, DDR4,
+  and LPDDR4 memory power requirements. The internally compensated regulators,
+  built-in Real-Time Clock (RTC), 32kHz crystal oscillator, and coin cell
+  battery charger provide a highly integrated, small footprint power solution
+  ideal for System-On-Module (SOM) applications. A spread spectrum feature
+  provides an ease-of-use solution for noise-sensitive audio or RF applications.
+
+  This device exposes two devices via I2C. One for the integrated RTC IP, and
+  one for everything else.
+
+  Link to datasheet:
+  https://www.renesas.com/in/en/products/power-power-management/multi-channel-power-management-ics-pmics/ssdsoc-power-management-ics-pmic-and-pmus/raa215300-high-performance-9-channel-pmic-supporting-ddr-memory-built-charger-and-rtc
+
+properties:
+  compatible:
+    enum:
+      - renesas,raa215300
+
+  reg:
+    maxItems: 1
+
+  renesas,raa215300-rtc:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle to the built-in RTC device.
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        pmic: raa215300@12 {
+            compatible = "renesas,raa215300";
+            reg = <0x12>;
+
+            renesas,raa215300-rtc = <&rtc_raa215300>;
+        };
+    };
-- 
2.25.1




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