dt-bindings: bd718x7: Yamlify and add BD71850

Convert ROHM bd71837 and bd71847 PMIC binding text docs to yaml. Split
the binding document to two separate documents (own documents for BD71837
and BD71847) as they have different amount of regulators. This way we can
better enforce the node name check for regulators. ROHM is also providing
BD71850 - which is almost identical to BD71847 - main difference is some
initial regulator states. The BD71850 can be driven by same driver and it
has same buck/LDO setup as BD71847 - add it to BD71847 binding document and
introduce compatible for it.

Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Acked-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

1 files changed, 97 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/regulator/rohm,bd71847-regulator.yaml b/Documentation/devicetree/bindings/regulator/rohm,bd71847-regulator.yaml
new file mode 100644
index 000000000000..526fd00bcb16
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/rohm,bd71847-regulator.yaml
@@ -0,0 +1,97 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/rohm,bd71847-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ROHM BD71847 and BD71850 Power Management Integrated Circuit regulators
+
+maintainers:
+  - Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
+
+description: |
+  List of regulators provided by this controller. BD71847 regulators node
+  should be sub node of the BD71847 MFD node. See BD71847 MFD bindings at
+  Documentation/devicetree/bindings/mfd/rohm,bd71847-pmic.yaml
+  Regulator nodes should be named to BUCK_<number> and LDO_<number>. The
+  definition for each of these nodes is defined using the standard
+  binding for regulators at
+  Documentation/devicetree/bindings/regulator/regulator.txt.
+  Note that if BD71847 starts at RUN state you probably want to use
+  regulator-boot-on at least for BUCK5. LDO6 is supplied by it and it must
+  not be disabled by driver at startup. If BUCK5 is disabled at startup the
+  voltage monitoring for LDO5/LDO6 can cause PMIC to reset.
+
+#The valid names for BD71847 regulator nodes are:
+#BUCK1, BUCK2, BUCK3, BUCK4, BUCK5, BUCK6
+#LDO1, LDO2, LDO3, LDO4, LDO5, LDO6
+
+patternProperties:
+  "^LDO[1-6]$":
+    type: object
+    allOf:
+      - $ref: regulator.yaml#
+    description:
+      Properties for single LDO regulator.
+
+    properties:
+      regulator-name:
+        pattern: "^ldo[1-6]$"
+        description:
+          should be "ldo1", ..., "ldo6"
+
+  "^BUCK[1-6]$":
+    type: object
+    allOf:
+      - $ref: regulator.yaml#
+    description:
+      Properties for single BUCK regulator.
+
+    properties:
+      regulator-name:
+        pattern: "^buck[1-6]$"
+        description:
+          should be "buck1", ..., "buck6"
+
+      rohm,dvs-run-voltage:
+        allOf:
+          - $ref: "/schemas/types.yaml#/definitions/uint32"
+          - minimum: 0
+            maximum: 1300000
+        description:
+          PMIC default "RUN" state voltage in uV. See below table for
+          bucks which support this. 0 means disabled.
+
+      rohm,dvs-idle-voltage:
+        allOf:
+          - $ref: "/schemas/types.yaml#/definitions/uint32"
+          - minimum: 0
+            maximum: 1300000
+        description:
+          PMIC default "IDLE" state voltage in uV. See below table for
+          bucks which support this. 0 means disabled.
+
+      rohm,dvs-suspend-voltage:
+        allOf:
+          - $ref: "/schemas/types.yaml#/definitions/uint32"
+          - minimum: 0
+            maximum: 1300000
+        description:
+          PMIC default "SUSPEND" state voltage in uV. See below table for
+          bucks which support this. 0 means disabled.
+
+        # Supported default DVS states:
+        #
+        # BD71847:
+        # buck | dvs-run-voltage | dvs-idle-voltage | dvs-suspend-voltage
+        # ----------------------------------------------------------------
+        # 1    | supported       | supported        | supported
+        # ----------------------------------------------------------------
+        # 2    | supported       | supported        | not supported
+        # ----------------------------------------------------------------
+        # rest | not supported   | not supported    | not supported
+
+    required:
+      - regulator-name
+  additionalProperties: false
+additionalProperties: false