Re: [PATCHv4 25/29] drm/omap: displays: panel-dpi: Support for handling backlight devices

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




On Thu, Mar 30, 2017 at 02:15:25PM +0300, Tomi Valkeinen wrote:
> From: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
> 
> The associated backlight device can be configured via DT by providing the
> phandle to the device.
> 
> If the backlight device is configured, the driver can manage the backligt
> along with the panel's power state, iow it can turn on the backlight when
> the panel is enabled and turn it off when the panel is disabled.
> 
> Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxx>
> Cc: devicetree@xxxxxxxxxxxxxxx
> ---
>  .../bindings/display/panel/panel-dpi.txt           |  3 ++
>  drivers/gpu/drm/omapdrm/displays/panel-dpi.c       | 37 ++++++++++++++++++++--
>  2 files changed, 38 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/display/panel/panel-dpi.txt b/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
> index d4add13e592d..6b203bc4d932 100644
> --- a/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
> +++ b/Documentation/devicetree/bindings/display/panel/panel-dpi.txt
> @@ -9,6 +9,7 @@ Optional properties:
>  - enable-gpios: panel enable gpio
>  - reset-gpios: GPIO to control the RESET pin
>  - vcc-supply: phandle of regulator that will be used to enable power to the display
> +- backlight: phandle of the backlight device

Any panel can have a backlight, so please add to panel/panel.txt 
instead.

>  
>  Required nodes:
>  - "panel-timing" containing video timings
> @@ -22,6 +23,8 @@ lcd0: display@0 {
>          compatible = "samsung,lte430wq-f0c", "panel-dpi";
>          label = "lcd";
>  
> +        backlight = <&backlight>;
> +
>          port {
>              lcd_in: endpoint {
>                      remote-endpoint = <&dpi_out>;
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html



[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]
  Powered by Linux