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[v5,3/6] regulator: rt4831: Adds DT binding document for Richtek RT4831 DSV regulator

Message ID 1608217244-314-3-git-send-email-u0084500@gmail.com (mailing list archive)
State New, archived
Headers show
Series [v5,1/6] mfd: rt4831: Adds support for Richtek RT4831 core | expand

Commit Message

ChiYuan Huang Dec. 17, 2020, 3 p.m. UTC
From: ChiYuan Huang <cy_huang@richtek.com>

Adds DT binding document for Richtek RT4831 DSV regulator.

Signed-off-by: ChiYuan Huang <cy_huang@richtek.com>
since v5
- Revert it back from v3 patch.
- Drop the example in dt-binding, Already full example in mfd dt-binding.
 .../regulator/richtek,rt4831-regulator.yaml        | 35 ++++++++++++++++++++++
 1 file changed, 35 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rt4831-regulator.yaml
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diff --git a/Documentation/devicetree/bindings/regulator/richtek,rt4831-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rt4831-regulator.yaml
new file mode 100644
index 00000000..d9c2333
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/richtek,rt4831-regulator.yaml
@@ -0,0 +1,35 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+$id: http://devicetree.org/schemas/regulator/richtek,rt4831-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+title: Richtek RT4831 Display Bias Voltage Regulator
+  - ChiYuan Huang <cy_huang@richtek.com>
+description: |
+  RT4831 is a multifunctional device that can provide power to the LCD display
+  and LCD backlight.
+  For Display Bias Voltage DSVP and DSVN, the output range is about 4V to 6.5V.
+  It is sufficient to meet the current LCD power requirement.
+  DSVLCM is a boost regulator in IC internal as DSVP and DSVN input power.
+  Its voltage should be configured above 0.15V to 0.2V gap larger than the
+  voltage needed for DSVP and DSVN. Too much voltage gap could improve the
+  voltage drop from the heavy loading scenario. But it also make the power
+  efficiency worse. It's a trade-off.
+  Datasheet is available at
+  https://www.richtek.com/assets/product_file/RT4831A/DS4831A-05.pdf
+  "^DSV(LCM|P|N)$":
+    type: object
+    $ref: regulator.yaml#
+    description:
+      Properties for single Display Bias Voltage regulator.
+additionalProperties: false