Describe HDMI input connector and ADV7612 HDMI decoder installed on
R-Car Gen3 Draak board.
The video signal routing to the HDMI decoder to the video input interface
VIN4 is multiplexed with CVBS input path, and enabled/disabled through
on-board switches SW-49, SW-50, SW-51 and SW-52.
As the default board switches configuration connects CVBS input to VIN4,
leave the HDMI decoder unconnected in DTS.
Signed-off-by: Jacopo Mondi <jacopo+rene...@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund+rene...@ragnatech.se>
---
v2 -> v3:
- Add comment on HDMI output port about the shared CVBS/HDMI video path
- Add Niklas' R-b tag
---
arch/arm64/boot/dts/renesas/r8a77995-draak.dts | 48 ++++++++++++++++++++++++++
1 file changed, 48 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
index 95745fc..1e475a4 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
@@ -59,6 +59,17 @@
};
};
+ hdmi-in {
+ compatible = "hdmi-connector";
+ type = "a";
+
+ port {
+ hdmi_con_in: endpoint {
+ remote-endpoint = <&adv7612_in>;
+ };
+ };
+ };
+
memory@48000000 {
device_type = "memory";
/* first 128MB is reserved for secure area. */
@@ -176,6 +187,43 @@
};
};
};
+
+ hdmi-decoder@4c {
+ compatible = "adi,adv7612";
+ reg = <0x4c>;
+ default-input = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ adv7612_in: endpoint {
+ remote-endpoint = <&hdmi_con_in>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+
+ /*
+ * The VIN4 video input path is shared between
+ * CVBS and HDMI inputs through SW[49-54]
+ * switches.
+ *
+ * CVBS is the default selection, leave HDMI
+ * not connected here.
+ */
+ adv7612_out: endpoint {
+ pclk-sample = <0>;
+ hsync-active = <0>;
+ vsync-active = <0>;
+ };
+ };
+ };
+ };
};
&i2c1 {
--
2.7.4
