Hello Peter,
On Thu, Jun 9, 2016 at 12:25 PM, Peter Senna Tschudin
<peter.senna at collabora.com> wrote:
> Devicetree bindings documentation for the GE B850v3 LVDS/DP++
> display bridge.
>
> Cc: Enric Balletbo i Serra <enric.balletbo at collabora.com>
> Cc: Philipp Zabel <p.zabel at pengutronix.de>
> Cc: Rob Herring <robh at kernel.org>
> Cc: Fabio Estevam <fabio.estevam at nxp.com>
> Signed-off-by: Peter Senna Tschudin <peter.senna at collabora.com>
> ---
> Changes from V1:
> - Replaced '_' by '-' in node names or compatible strings
> - Added missing @73 to the example
>
> .../devicetree/bindings/ge/b850v3_lvds_dp.txt | 38
> ++++++++++++++++++++++
> 1 file changed, 38 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/ge/b850v3_lvds_dp.txt
>
> diff --git a/Documentation/devicetree/bindings/ge/b850v3_lvds_dp.txt
> b/Documentation/devicetree/bindings/ge/b850v3_lvds_dp.txt
> new file mode 100644
> index 0000000..46bbea9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/ge/b850v3_lvds_dp.txt
> @@ -0,0 +1,38 @@
> +Driver for GE B850v3 LVDS/DP++ display bridge
> +
> +Required properties:
> + - compatible : should be "ge,b850v3_lvds_dp".
It seems you forgot to replace '_' by '-' (you did in the example though)
> + - reg : should contain the address used to ack the interrupts.
> + - interrupt-parent : should link to the gpio used as interrupt
> + source on the host.
Is the interrupt parent always a GPIO controller since that is what
this description says.
Shouldn't be instead something like instead?
interrupt-parent: phandle of the interrupt controller that services
interrupts to the device
> + - interrupts : one interrupt should be described here, as in
> + <0 IRQ_TYPE_LEVEL_HIGH>.
> + - edid-reg : should contain the address used to read edid information
> + - port : should describe the vide signal connection between the host
s/vide/video
> + and the bridge.
> +
> +Example:
> +
> +&mux2_i2c2 {
> + status = "okay";
> + clock-frequency = <100000>;
> +
> + b850v3-lvds-dp-bridge at 73 {
> + compatible = "ge,b850v3-lvds-dp";
> + #address-cells = <1>;
> + #size-cells = <0>;
> +
> + reg = <0x73>;
> + interrupt-parent = <&gpio2>;
> + interrupts = <0 IRQ_TYPE_LEVEL_HIGH>;
> +
> + edid-reg = <0x72>;
> +
> + port at 0 {
> + reg = <0>;
AFAIU a unit-address and reg property for ports are only needed if you
have more than one port according to
Documentation/devicetree/bindings/graph.txt and
Documentation/devicetree/bindings/media/video-interfaces.txt.
> + b850v3_dp_bridge_in: endpoint {
> + remote-endpoint = <&lvds0_out>;
> + };
> + };
> + };
> +};
> --
Best regards,
Javier
