Commit bd58a390 authored by Chen-Yu Tsai's avatar Chen-Yu Tsai Committed by Tomi Valkeinen
Browse files

dt-bindings: simplefb: Support regulator supply properties 



The physical display tied to the framebuffer may have regulators
providing power to it, such as power for LCDs or interface conversion
chips.

The number of regulators in use may vary, but the regulator supply
binding can not be a list. Instead just support any named regulator
supply properties under the device node. These should be properly
named to match the device schematics / design. The driver should
take care to go through them all.

Signed-off-by: default avatarChen-Yu Tsai <wens@csie.org>
Reviewed-by: default avatarHans de Goede <hdegoede@redhat.com>
Acked-by: default avatarMark Brown <broonie@kernel.org>
Acked-by: default avatarRob Herring <robh@kernel.org>
Signed-off-by: default avatarTomi Valkeinen <tomi.valkeinen@ti.com>
parent 2168b49a

Documentation/devicetree/bindings/display/simple-framebuffer.txt

+9 −4
Original line number Original line Diff line number Diff line
@@ -47,10 +47,14 @@ Required properties: 
  - a8b8g8r8 (32-bit pixels, d[31:24]=a, d[23:16]=b, d[15:8]=g, d[7:0]=r).

  - a8b8g8r8 (32-bit pixels, d[31:24]=a, d[23:16]=b, d[15:8]=g, d[7:0]=r).





Optional properties:

Optional properties:

- clocks : List of clocks used by the framebuffer. Clocks listed here

- clocks : List of clocks used by the framebuffer.

           are expected to already be configured correctly. The OS must

- *-supply : Any number of regulators used by the framebuffer. These should

           ensure these clocks are not modified or disabled while the

	     be named according to the names in the device's design.

           simple framebuffer remains active.



  The above resources are expected to already be configured correctly.

  The OS must ensure they are not modified or disabled while the simple

  framebuffer remains active.



- display : phandle pointing to the primary display hardware node

- display : phandle pointing to the primary display hardware node





Example:

Example:
@@ -68,6 +72,7 @@ chosen { 
		stride = <(1600 * 2)>;

		stride = <(1600 * 2)>;

		format = "r5g6b5";

		format = "r5g6b5";

		clocks = <&ahb_gates 36>, <&ahb_gates 43>, <&ahb_gates 44>;

		clocks = <&ahb_gates 36>, <&ahb_gates 43>, <&ahb_gates 44>;

		lcd-supply = <&reg_dc1sw>;

		display = <&lcdc0>;

		display = <&lcdc0>;

	};

	};

	stdout-path = "display0";

	stdout-path = "display0";