The 5" and 7" Raspberry Pi 720x1280 Display 2 MCU is a bit more
complex than the original Display 1 ATTINY88 and the binding is
also a bit more demanding. Split the binding into separate file
and fill in required gpio-controller, #gpio-cells and #pwm-cells
which must be present for the V2 MCU. Include mention of the 5"
panel in the description of Display 2, as the 5" panel uses the
same MCU.
Fixes: 6d09c6e474bd ("regulator: dt-bindings: rpi-panel: Add regulator for 7" Raspberry Pi 720x1280")
Signed-off-by: Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>
---
Cc: Broadcom internal kernel review list <bcm-kernel-feedback-list@xxxxxxxxxxxx>
Cc: Conor Dooley <conor+dt@xxxxxxxxxx>
Cc: Dave Stevenson <dave.stevenson@xxxxxxxxxxxxxxx>
Cc: Florian Fainelli <florian.fainelli@xxxxxxxxxxxx>
Cc: Krzysztof Kozlowski <krzk+dt@xxxxxxxxxx>
Cc: Liam Girdwood <lgirdwood@xxxxxxxxx>
Cc: Mark Brown <broonie@xxxxxxxxxx>
Cc: Rob Herring <robh@xxxxxxxxxx>
Cc: devicetree@xxxxxxxxxxxxxxx
Cc: linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-rpi-kernel@xxxxxxxxxxxxxxxxxxx
Cc: linux-renesas-soc@xxxxxxxxxxxxxxx
---
...,7inch-touchscreen-panel-regulator-v2.yaml | 61 +++++++++++++++++++
...ypi,7inch-touchscreen-panel-regulator.yaml | 7 +--
2 files changed, 63 insertions(+), 5 deletions(-)
create mode 100644 Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml
diff --git a/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml b/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml
new file mode 100644
index 0000000000000..efc7815a136b4
--- /dev/null
+++ b/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/regulator/raspberrypi,7inch-touchscreen-panel-regulator-v2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RaspberryPi 5" and 7" display V2 MCU-based regulator/backlight controller
+
+maintainers:
+ - Marek Vasut <marek.vasut+renesas@xxxxxxxxxxx>
+
+description: |
+ The RaspberryPi 5" and 7" display 2 has an MCU-based regulator, PWM
+ backlight and GPIO controller on the PCB, which is used to turn the
+ display unit on/off and control the backlight.
+
+allOf:
+ - $ref: regulator.yaml#
+
+properties:
+ compatible:
+ const: raspberrypi,touchscreen-panel-regulator-v2
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+ "#gpio-cells":
+ const: 2
+ description:
+ The first cell is the pin number, and the second cell is used to
+ specify the gpio polarity (GPIO_ACTIVE_HIGH or GPIO_ACTIVE_LOW).
+
+ "#pwm-cells":
+ const: 3
+ description: See ../../pwm/pwm.yaml for description of the cell formats.
+
+additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - "#gpio-cells"
+ - "#pwm-cells"
+
+examples:
+ - |
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ gpio@45 {
+ compatible = "raspberrypi,touchscreen-panel-regulator-v2";
+ reg = <0x45>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ #pwm-cells = <3>;
+ };
+ };
+
+...
diff --git a/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator.yaml b/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator.yaml
index 18944d39d08fc..41678400e63fa 100644
--- a/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator.yaml
@@ -12,17 +12,14 @@ maintainers:
description: |
The RaspberryPi 7" display has an ATTINY88-based regulator/backlight
controller on the PCB, which is used to turn the display unit on/off
- and control the backlight. The V2 supports 5" and 7" panels and also
- offers PWM backlight control.
+ and control the backlight.
allOf:
- $ref: regulator.yaml#
properties:
compatible:
- enum:
- - raspberrypi,7inch-touchscreen-panel-regulator
- - raspberrypi,touchscreen-panel-regulator-v2
+ const: raspberrypi,7inch-touchscreen-panel-regulator
reg:
maxItems: 1
--
2.50.1
