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

cy_huang
2020-12-17T15:02:35Z

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

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
+
+maintainers:
+ - 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
+
+patternProperties:
+ "^DSV(LCM|P|N)$":
+ type: object
+ $ref: regulator.yaml#
+ description:
+ Properties for single Display Bias Voltage regulator.
+
+additionalProperties: false
--
2.7.4