On Mon, Dec 07, 2015 at 09:52:37PM +0900, Inki Dae wrote:
> This patch updates a ports node binding for panel.
>
> With this, dp node can have a ports node which describes
> a remote endpoint node that can be connected to panel or bridge
> node.
>
> Changelog v2:
> - remove unnecessary properties and numbering.
> - update description about eDP device.
>
> Signed-off-by: Inki Dae <inki.dae at samsung.com>
> Reviewed-by: Javier Martinez Canillas <javier at osg.samsung.com>
Acked-by: Rob Herring <robh at kernel.org>
> ---
> .../bindings/display/exynos/exynos_dp.txt | 41
> +++++++++++++++++++---
> 1 file changed, 37 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
> b/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
> index 64693f2..22efeba 100644
> --- a/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
> +++ b/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
> @@ -1,3 +1,20 @@
> +Device-Tree bindings for Samsung Exynos Embedded DisplayPort Transmitter(eDP)
> +
> +DisplayPort is industry standard to accommodate the growing board adoption
> +of digital display technology within the PC and CE industries.
> +It consolidates the internal and external connection methods to reduce device
> +complexity and cost. It also supports necessary features for important cross
> +industry applications and provides performance scalability to enable the next
> +generation of displays that feature higher color depths, refresh rates, and
> +display resolutions.
> +
> +eDP (embedded display port) device is compliant with Embedded DisplayPort
> +standard as follows,
> +- DisplayPort standard 1.1a for Exynos5250 and Exynos5260.
> +- DisplayPort standard 1.3 for Exynos5422s and Exynos5800.
> +
> +eDP resides between FIMD and panel or FIMD and bridge such as LVDS.
> +
> The Exynos display port interface should be configured based on
> the type of panel connected to it.
>
> @@ -66,8 +83,15 @@ Optional properties for dp-controller:
> Hotplug detect GPIO.
> Indicates which GPIO should be used for hotplug
> detection
> - -video interfaces: Device node can contain video interface port
> - nodes according to [1].
> +Video interfaces:
> + Device node can contain video interface port nodes according to [1].
> + The following are properties specific to those nodes:
> +
> + endpoint node connected to bridge or panel node:
> + - remote-endpoint: specifies the endpoint in panel or bridge node.
> + This node is required in all kinds of exynos dp
> + to represent the connection between dp and bridge
> + or dp and panel.
>
> [1]: Documentation/devicetree/bindings/media/video-interfaces.txt
>
> @@ -111,9 +135,18 @@ Board Specific portion:
> };
>
> ports {
> - port at 0 {
> + port {
> dp_out: endpoint {
> - remote-endpoint = <&bridge_in>;
> + remote-endpoint = <&dp_in>;
> + };
> + };
> + };
> +
> + panel {
> + ...
> + port {
> + dp_in: endpoint {
> + remote-endpoint = <&dp_out>;
> };
> };
> };
> --
> 1.9.1
>
