On Tue, Nov 17, 2015 at 12:31:02PM +0800, Chen-Yu Tsai wrote:
> 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 <w...@csie.org>
> Reviewed-by: Hans de Goede <hdego...@redhat.com>
> Acked-by: Mark Brown <broo...@kernel.org>
Not really happy to see the continued expansion of simplefb binding, but
Acked-by: Rob Herring <r...@kernel.org>
> ---
> .../devicetree/bindings/display/simple-framebuffer.txt | 13
> +++++++++----
> 1 file changed, 9 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/simple-framebuffer.txt
> b/Documentation/devicetree/bindings/display/simple-framebuffer.txt
> index 4474ef6e0b95..8c9e9f515c87 100644
> --- a/Documentation/devicetree/bindings/display/simple-framebuffer.txt
> +++ b/Documentation/devicetree/bindings/display/simple-framebuffer.txt
> @@ -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).
>
> Optional properties:
> -- clocks : List of clocks used by the framebuffer. Clocks listed here
> - are expected to already be configured correctly. The OS must
> - ensure these clocks are not modified or disabled while the
> - simple framebuffer remains active.
> +- clocks : List of clocks used by the framebuffer.
> +- *-supply : Any number of regulators used by the framebuffer. These should
> + be named according to the names in the device's design.
> +
> + 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
>
> Example:
> @@ -68,6 +72,7 @@ chosen {
> stride = <(1600 * 2)>;
> format = "r5g6b5";
> clocks = <&ahb_gates 36>, <&ahb_gates 43>, <&ahb_gates 44>;
> + lcd-supply = <®_dc1sw>;
> display = <&lcdc0>;
> };
> stdout-path = "display0";
> --
> 2.6.2
>
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