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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: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Mark Brown <broonie@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
This commit is contained in:
Chen-Yu Tsai 2015-11-17 12:31:02 +08:00 committed by Tomi Valkeinen
parent 2168b49a22
commit bd58a39080
1 changed files with 9 additions and 4 deletions
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13
Documentation/devicetree/bindings/display/simple-framebuffer.txt
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@ -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";