linux-kernel - [PATCH 2/2] dt-bindings: regulator: Add bindings for Unisoc's SC2730 regulator

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Date:   Tue, 28 Sep 2021 15:36:09 +0800
From:   Chunyan Zhang <zhang.lyra@...il.com>
To:     Mark Brown <broonie@...nel.org>,
        Liam Girdwood <lgirdwood@...il.com>,
        Rob Herring <robh+dt@...nel.org>
Cc:     devicetree@...r.kernel.org, Baolin Wang <baolin.wang7@...il.com>,
        Orson Zhai <orsonzhai@...il.com>,
        Chunyan Zhang <zhang.lyra@...il.com>,
        Chunyan Zhang <chunyan.zhang@...soc.com>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/2] dt-bindings: regulator: Add bindings for Unisoc's SC2730 regulator

From: Chunyan Zhang <chunyan.zhang@...soc.com>

SC2730 is used on Unisoc's UMS512 SoC, it integrates low-voltage and low
quiescent current DCDC/LDO.

Signed-off-by: Chunyan Zhang <chunyan.zhang@...soc.com>
---
 .../regulator/sprd,sc2730-regulator.yaml      | 61 +++++++++++++++++++
 1 file changed, 61 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/sprd,sc2730-regulator.yaml

diff --git a/Documentation/devicetree/bindings/regulator/sprd,sc2730-regulator.yaml b/Documentation/devicetree/bindings/regulator/sprd,sc2730-regulator.yaml
new file mode 100644
index 000000000000..04e504418e35
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/sprd,sc2730-regulator.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright 2019-2021 Unisoc Inc.
+%YAML 1.2
+---
+$id: "http://devicetree.org/schemas/regulator/sprd,sc2730-regulator.yaml#"
+$schema: "http://devicetree.org/meta-schemas/core.yaml#"
+
+title: Unisoc SC2730 Voltage Regulators Device Tree Bindings
+
+maintainers:
+  - Orson Zhai <orsonzhai@...il.com>
+  - Baolin Wang <baolin.wang7@...il.com>
+  - Chunyan Zhang <zhang.lyra@...il.com>
+
+properties:
+  compatible:
+    const: sprd,sc2730-regulator
+
+  reg:
+    maxItems: 1
+
+patternProperties:
+  "^(dcdc|buck|ldo)_.+":
+    # Child node
+    type: object
+    description: dcdc/buck/ldo regulator nodes(s).
+    $ref: "regulator.yaml#"
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    pmic {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      regulators@...0 {
+        compatible = "sprd,sc2730-regulator";
+        reg = <0x1800>;
+
+        dcdc_cpu {
+          regulator-name = "vddcpu";
+          regulator-min-microvolt = <200000>;
+          regulator-max-microvolt = <1596875>;
+          regulator-ramp-delay = <25000>;
+          regulator-always-on;
+        };
+
+        ldo_vddwcn {
+          regulator-name = "vddwcn";
+          regulator-min-microvolt = <900000>;
+          regulator-max-microvolt = <1845000>;
+          regulator-ramp-delay = <25000>;
+        };
+      };
+    };
+...
-- 
2.25.1