[PATCH 1/2] regulator: dt-bindings: rpi-panel: Add regulator for 7" Raspberry Pi 720x1280

[Marek Vasut]

Document regulator compatible string for the 7" Raspberry Pi 720x1280 DSI
panel based on ili9881. This is the Raspberry Pi DSI Panel V2. The newer
Raspberry Pi 5" and 7" panels have a slightly different register map to
the original one and offers PWM backlight control.

Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
---
Cc: Broadcom internal kernel review list <bcm-kernel-feedback-list at broadcom.com>
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: Dave Stevenson <dave.stevenson at raspberrypi.com>
Cc: Florian Fainelli <florian.fainelli at broadcom.com>
Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
Cc: Liam Girdwood <lgirdwood at gmail.com>
Cc: Mark Brown <broonie at kernel.org>
Cc: Rob Herring <robh at kernel.org>
Cc: devicetree at vger.kernel.org
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-renesas-soc at vger.kernel.org
Cc: linux-rpi-kernel at lists.infradead.org
---
 .../raspberrypi,7inch-touchscreen-panel-regulator.yaml     | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

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 41678400e63f..18944d39d08f 100644
--- a/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator.yaml
+++ b/Documentation/devicetree/bindings/regulator/raspberrypi,7inch-touchscreen-panel-regulator.yaml
@@ -12,14 +12,17 @@ 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.
+  and control the backlight. The V2 supports 5" and 7" panels and also
+  offers PWM backlight control.
 
 allOf:
   - $ref: regulator.yaml#
 
 properties:
   compatible:
-    const: raspberrypi,7inch-touchscreen-panel-regulator
+    enum:
+      - raspberrypi,7inch-touchscreen-panel-regulator
+      - raspberrypi,touchscreen-panel-regulator-v2
 
   reg:
     maxItems: 1
-- 
2.47.2