[PATCH 2/2] dt-bindings: leds: lp855x: Convert to json-schema
Thierry Reding
thierry.reding at gmail.com
Fri Dec 17 17:07:15 UTC 2021
From: Thierry Reding <treding at nvidia.com>
Convert the Texas Instruments LP855x backlight device tree bindings from
the free-form text format to json-schema.
Signed-off-by: Thierry Reding <treding at nvidia.com>
---
.../bindings/leds/backlight/lp855x.txt | 72 ---------
.../bindings/leds/backlight/ti,lp8550.yaml | 151 ++++++++++++++++++
2 files changed, 151 insertions(+), 72 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/leds/backlight/lp855x.txt
create mode 100644 Documentation/devicetree/bindings/leds/backlight/ti,lp8550.yaml
diff --git a/Documentation/devicetree/bindings/leds/backlight/lp855x.txt b/Documentation/devicetree/bindings/leds/backlight/lp855x.txt
deleted file mode 100644
index 88f56641fc28..000000000000
--- a/Documentation/devicetree/bindings/leds/backlight/lp855x.txt
+++ /dev/null
@@ -1,72 +0,0 @@
-lp855x bindings
-
-Required properties:
- - compatible: "ti,lp8550", "ti,lp8551", "ti,lp8552", "ti,lp8553",
- "ti,lp8555", "ti,lp8556", "ti,lp8557"
- - reg: I2C slave address (u8)
- - dev-ctrl: Value of DEVICE CONTROL register (u8). It depends on the device.
-
-Optional properties:
- - bl-name: Backlight device name (string)
- - init-brt: Initial value of backlight brightness (u8)
- - pwm-period: PWM period value. Set only PWM input mode used (u32)
- - rom-addr: Register address of ROM area to be updated (u8)
- - rom-val: Register value to be updated (u8)
- - power-supply: Regulator which controls the 3V rail
- - enable-supply: Regulator which controls the EN/VDDIO input
-
-Example:
-
- /* LP8555 */
- backlight at 2c {
- compatible = "ti,lp8555";
- reg = <0x2c>;
-
- dev-ctrl = /bits/ 8 <0x00>;
- pwm-period = <10000>;
-
- /* 4V OV, 4 output LED0 string enabled */
- rom_14h {
- rom-addr = /bits/ 8 <0x14>;
- rom-val = /bits/ 8 <0xcf>;
- };
-
- /* Heavy smoothing, 24ms ramp time step */
- rom_15h {
- rom-addr = /bits/ 8 <0x15>;
- rom-val = /bits/ 8 <0xc7>;
- };
-
- /* 4 output LED1 string enabled */
- rom_19h {
- rom-addr = /bits/ 8 <0x19>;
- rom-val = /bits/ 8 <0x0f>;
- };
- };
-
- /* LP8556 */
- backlight at 2c {
- compatible = "ti,lp8556";
- reg = <0x2c>;
-
- bl-name = "lcd-bl";
- dev-ctrl = /bits/ 8 <0x85>;
- init-brt = /bits/ 8 <0x10>;
- };
-
- /* LP8557 */
- backlight at 2c {
- compatible = "ti,lp8557";
- reg = <0x2c>;
- enable-supply = <&backlight_vddio>;
- power-supply = <&backlight_vdd>;
-
- dev-ctrl = /bits/ 8 <0x41>;
- init-brt = /bits/ 8 <0x0a>;
-
- /* 4V OV, 4 output LED string enabled */
- rom_14h {
- rom-addr = /bits/ 8 <0x14>;
- rom-val = /bits/ 8 <0xcf>;
- };
- };
diff --git a/Documentation/devicetree/bindings/leds/backlight/ti,lp8550.yaml b/Documentation/devicetree/bindings/leds/backlight/ti,lp8550.yaml
new file mode 100644
index 000000000000..412779a5462b
--- /dev/null
+++ b/Documentation/devicetree/bindings/leds/backlight/ti,lp8550.yaml
@@ -0,0 +1,151 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/leds/backlight/ti,lp8550.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Texas Instruments LP855x family devicetree bindings
+
+maintainers:
+ - Milo Kim <milo.kim at ti.com>
+ - Rob Herring <robh+dt at kernel.org>
+
+properties:
+ compatible:
+ enum:
+ - ti,lp8550
+ - ti,lp8551
+ - ti,lp8552
+ - ti,lp8553
+ - ti,lp8555
+ - ti,lp8556
+ - ti,lp8557
+
+ reg:
+ maxItems: 1
+
+ dev-ctrl:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: Value of DEVICE CONTROL register. It depends on the device.
+
+ bl-name:
+ $ref: /schemas/types.yaml#/definitions/string
+ description: Backlight device name
+
+ init-brt:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: Initial value of backlight brightness
+
+ pwm-period:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description: PWM period value. Set only PWM input mode used
+
+ pwm-names:
+ maxItems: 1
+
+ pwms:
+ maxItems: 1
+
+ power-supply:
+ description: Regulator which controls the 3V rail
+
+ enable-supply:
+ description: Regulator which controls the EN/VDDIO input
+
+patternProperties:
+ '^rom_[0-9a-f]{2}h$':
+ type: object
+ properties:
+ rom-addr:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: Register address of ROM area to be updated
+
+ rom-val:
+ $ref: /schemas/types.yaml#/definitions/uint8
+ description: Register value to be updated
+
+ additionalProperties: false
+
+ required:
+ - rom-addr
+ - rom-val
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - dev-ctrl
+
+examples:
+ # LP8555
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight at 2c {
+ compatible = "ti,lp8555";
+ reg = <0x2c>;
+
+ dev-ctrl = /bits/ 8 <0x00>;
+ pwm-period = <10000>;
+
+ /* 4V OV, 4 output LED0 string enabled */
+ rom_14h {
+ rom-addr = /bits/ 8 <0x14>;
+ rom-val = /bits/ 8 <0xcf>;
+ };
+
+ /* Heavy smoothing, 24ms ramp time step */
+ rom_15h {
+ rom-addr = /bits/ 8 <0x15>;
+ rom-val = /bits/ 8 <0xc7>;
+ };
+
+ /* 4 output LED1 string enabled */
+ rom_19h {
+ rom-addr = /bits/ 8 <0x19>;
+ rom-val = /bits/ 8 <0x0f>;
+ };
+ };
+ };
+
+ # LP8556
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight at 2c {
+ compatible = "ti,lp8556";
+ reg = <0x2c>;
+
+ bl-name = "lcd-bl";
+ dev-ctrl = /bits/ 8 <0x85>;
+ init-brt = /bits/ 8 <0x10>;
+ };
+ };
+
+ # LP8557
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ backlight at 2c {
+ compatible = "ti,lp8557";
+ reg = <0x2c>;
+ enable-supply = <&backlight_vddio>;
+ power-supply = <&backlight_vdd>;
+
+ dev-ctrl = /bits/ 8 <0x41>;
+ init-brt = /bits/ 8 <0x0a>;
+
+ /* 4V OV, 4 output LED string enabled */
+ rom_14h {
+ rom-addr = /bits/ 8 <0x14>;
+ rom-val = /bits/ 8 <0xcf>;
+ };
+ };
+ };
--
2.34.1
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