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Subject[PATCH v4 3/3] arm64: dts: renesas: draak: Describe HDMI input
Date
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+renesas@jmondi.org>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>

---
v3 -> v4:
- Add Laurent's R-b tag.
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 | 49 ++++++++++++++++++++++++++
1 file changed, 49 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
index ad59032..1a474f94 100644
--- a/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77995-draak.dts
@@ -69,6 +69,17 @@
};
};

+ 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. */
@@ -201,6 +212,44 @@
};
};
};
+
+ };
+
+ 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[49-53]
+ * switches.
+ *
+ * CVBS is the default selection, leave HDMI
+ * not connected here.
+ */
+ adv7612_out: endpoint {
+ pclk-sample = <0>;
+ hsync-active = <0>;
+ vsync-active = <0>;
+ };
+ };
+ };
};
};

--
2.7.4
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