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Date: Mon, 28 Sep 2020 15:19:44 +0800
From: cy_huang <u0084500@...il.com>
To: lgirdwood@...il.com, broonie@...nel.org, robh+dt@...nel.org
Cc: linux-kernel@...r.kernel.org, cy_huang@...htek.com,
devicetree@...r.kernel.org
Subject: [PATCH v2 2/2] regulator: rtmv20: Add DT-binding document for Richtek RTMV20
From: ChiYuan Huang <cy_huang@...htek.com>
Add DT-binding document for Richtek RTMV20
Signed-off-by: ChiYuan Huang <cy_huang@...htek.com>
---
.../regulator/richtek,rtmv20-regulator.yaml | 168 +++++++++++++++++++++
1 file changed, 168 insertions(+)
create mode 100644 Documentation/devicetree/bindings/regulator/richtek,rtmv20-regulator.yaml
diff --git a/Documentation/devicetree/bindings/regulator/richtek,rtmv20-regulator.yaml b/Documentation/devicetree/bindings/regulator/richtek,rtmv20-regulator.yaml
new file mode 100644
index 00000000..4cb4b68
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/richtek,rtmv20-regulator.yaml
@@ -0,0 +1,168 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/richtek,rtmv20-regulator.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Richtek RTMV20 laser diode regulator
+
+maintainers:
+ - ChiYuan Huang <cy_huang@...htek.com>
+
+description: |
+ Richtek RTMV20 is a load switch current regulator that can supply up to 6A.
+ It is used to drive laser diode. There're two signals for chip controls
+ (Enable/Fail), Enable pin to turn chip on, and Fail pin as fault indication.
+ There're still four pins for camera control, two inputs (strobe and vsync),
+ the others for outputs (fsin1 and fsin2). Strobe input to start the current
+ supply, vsync input from IR camera, and fsin1/fsin2 output for the optional.
+
+properties:
+ compatible:
+ const: richtek,rtmv20
+
+ reg:
+ maxItems: 1
+
+ wakeup-source: true
+
+ interrupts-extend:
+ maxItems: 1
+
+ enable-gpios:
+ description: A connection of the 'enable' gpio line.
+ maxItems: 1
+
+ ld-pulse-delay-us:
+ description: |
+ load current pulse delay in microsecond after strobe pin pulse high.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 0
+ maximum: 100000
+ default: 0
+
+ ld-pulse-width-us:
+ description: |
+ Load current pulse width in microsecond after strobe pin pulse high.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 0
+ maximum: 10000
+ default: 1200
+
+ fsin1-delay-us:
+ description: |
+ Fsin1 pulse high delay in microsecond after vsync signal pulse high.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 0
+ maximum: 100000
+ default: 23000
+
+ fsin1-width-us:
+ description: |
+ Fsin1 pulse high width in microsecond after vsync signal pulse high.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 40
+ maximum: 10000
+ default: 160
+
+ fsin2-delay-us:
+ description: |
+ Fsin2 pulse high delay in microsecond after vsync signal pulse high.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 0
+ maximum: 100000
+ default: 23000
+
+ fsin2-width-us:
+ description: |
+ Fsin2 pulse high width in microsecond after vsync signal pulse high.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 40
+ maximum: 10000
+ default: 160
+
+ es-pulse-width-us:
+ description: Eye safety function pulse width limit in microsecond.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 0
+ maximum: 10000
+ default: 1200
+
+ es-ld-current-microamp:
+ description: Eye safety function load current limit in microamp.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 0
+ maximum: 6000000
+ default: 3000000
+
+ lbp-level-microvolt:
+ description: Low battery protection level in microvolt.
+ $ref: "/schemas/types.yaml#/definitions/uint32"
+ minimum: 2400000
+ maximum: 3700000
+ default: 2700000
+
+ lbp-enable:
+ description: Low battery protection function enable control.
+ type: boolean
+
+ strobe-polarity-high:
+ description: Strobe pin active polarity control.
+ type: boolean
+
+ vsync-polarity-high:
+ description: Vsync pin active polarity control.
+ type: boolean
+
+ fsin-enable:
+ description: Fsin function enable control.
+ type: boolean
+
+ fsin-output:
+ description: Fsin function output control.
+ type: boolean
+
+ es-enable:
+ description: Eye safety function enable control.
+ type: boolean
+
+patternProperties:
+ "lsw":
+ type: object
+ $ref: "regulator.yaml#"
+
+required:
+ - compatible
+ - reg
+ - wakeup-source
+ - interrupts-extend
+ - enable-gpios
+ - lsw
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ rtmv20@34 {
+ compatible = "richtek,rtmv20";
+ reg = <0x34>;
+ wakeup-source;
+ interrupts-extend = <&gpio26 2 IRQ_TYPE_LEVEL_LOW>;
+ enable-gpios = <&gpio26 3 0>;
+
+ strobe-polarity-high;
+ vsync-polarity-high;
+
+ lsw {
+ regulator-name = "rtmv20,lsw";
+ regulator-min-microamp = <0>;
+ regulator-max-microamp = <6000000>;
+ };
+ };
+ };
+...
--
2.7.4
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