[PATCH v4 3/9] regulator: dt-bindings: Add MediaTek MT6392 PMIC

[Luca Leonardo Scorcia <l.scorcia@gmail.com>]

Add bindings for the regulators found in the MediaTek MT6392 PMIC,
usually found in board designs using the MediaTek MT8516/MT8167 SoCs.

Signed-off-by: Luca Leonardo Scorcia <l.scorcia@gmail.com>
---
 .../regulator/mediatek,mt6392-regulator.yaml  | 74 +++++++++++++++++++
 .../regulator/mediatek,mt6392-regulator.h     | 24 ++++++
 2 files changed, 98 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/mediatek,mt6392-regulator.yaml
 create mode 100644 include/dt-bindings/regulator/mediatek,mt6392-regulator.h

diff --git a/Documentation/devicetree/bindings/regulator/mediatek,mt6392-regulator.yaml b/Documentation/devicetree/bindings/regulator/mediatek,mt6392-regulator.yaml
new file mode 100644
index 000000000000..24fbaef0e717
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/mediatek,mt6392-regulator.yaml
@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/mediatek,mt6392-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT6392 regulator
+
+description:
+  Regulator node of the PMIC. This node should under the PMIC's device node.
+  MT6392 is a power management system chip containing three buck converters and
+  23 LDOs. All voltage regulators provided by the PMIC are described as
+  sub-nodes of this node.
+
+properties:
+  vproc-supply:
+    description: Supply for buck regulator vproc
+  vcore-supply:
+    description: Supply for buck regulator vcore
+  vsys-supply:
+    description: Supply for buck regulator vsys
+  avddldo-supply:
+    description: |
+      Supply for AVDD LDOs (vm, vio18, vcn18, vcamd, vcamio). According to the data sheet
+      this is an internal supply derived from vsys.
+  ldo1-supply:
+    description: Supply for LDOs group 1 (vaud28, vxo22, vaud22, vadc18, vcama, vrtc)
+  ldo2-supply:
+    description: Supply for LDOs group 2 (vcn35, vio28, vmc, vmch, vefuse, vdig18)
+  ldo3-supply:
+    description: Supply for LDOs group 3 (vusb, vemc3v3, vcamaf, vgp1, vgp2, vm25)
+
+patternProperties:
+  "^v(core|proc|sys)$":
+    description: Buck regulators
+    type: object
+    $ref: regulator.yaml#
+    properties:
+      regulator-allowed-modes:
+        description: |
+          BUCK regulators can set regulator-initial-mode and regulator-allowed-modes to
+          values specified in dt-bindings/regulator/mediatek,mt6392-regulator.h
+        items:
+          enum: [0, 1]
+    unevaluatedProperties: false
+
+  "^v(adc18|camio|cn18|io18|xo22|m25|aud28|io28|rtc|vusb)$":
+    description: LDOs with fixed output and mode setting
+    type: object
+    $ref: regulator.yaml#
+    properties:
+      regulator-allowed-modes:
+        description: |
+          LDO regulators can set regulator-initial-mode and regulator-allowed-modes to
+          values specified in dt-bindings/regulator/mediatek,mt6392-regulator.h
+        items:
+          enum: [0, 1]
+    unevaluatedProperties: false
+
+  "^v(cama|dig18)$":
+    description: LDOs with fixed output without mode setting
+    type: object
+    $ref: regulator.yaml#
+    unevaluatedProperties: false
+
+  "^v(aud22|camaf|camd|cn35|efuse|emc3v3|gp1|gp2|m|mc|mch)$":
+    description: LDOs with adjustable output
+    type: object
+    $ref: regulator.yaml#
+    properties:
+      regulator-allowed-modes: false
+    unevaluatedProperties: false
+
+additionalProperties: false
diff --git a/include/dt-bindings/regulator/mediatek,mt6392-regulator.h b/include/dt-bindings/regulator/mediatek,mt6392-regulator.h
new file mode 100644
index 000000000000..8bd1a13faad8
--- /dev/null
+++ b/include/dt-bindings/regulator/mediatek,mt6392-regulator.h
@@ -0,0 +1,24 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+
+#ifndef _DT_BINDINGS_REGULATOR_MEDIATEK_MT6392_H_
+#define _DT_BINDINGS_REGULATOR_MEDIATEK_MT6392_H_
+
+/*
+ * Buck mode constants which may be used in devicetree properties (eg.
+ * regulator-initial-mode, regulator-allowed-modes).
+ * See the manufacturer's datasheet for more information on these modes.
+ */
+
+#define MT6392_BUCK_MODE_AUTO		0
+#define MT6392_BUCK_MODE_FORCE_PWM	1
+
+/*
+ * LDO mode constants which may be used in devicetree properties (eg.
+ * regulator-initial-mode, regulator-allowed-modes).
+ * See the manufacturer's datasheet for more information on these modes.
+ */
+
+#define MT6392_LDO_MODE_NORMAL		0
+#define MT6392_LDO_MODE_LP		1
+
+#endif
-- 
2.43.0