From: "Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
To: Jacopo Mondi <jacopo+renesas@jmondi.org>,
Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>,
Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>,
linux-media@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: [PATCH 1/2] dt-bindings: media: i2c: Add bindings for Maxim Integrated MAX9286
Date: Fri, 9 Aug 2019 06:05:57 +0200 [thread overview]
Message-ID: <20190809040558.10698-2-niklas.soderlund+renesas@ragnatech.se> (raw)
In-Reply-To: <20190809040558.10698-1-niklas.soderlund+renesas@ragnatech.se>
From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
The MAX9286 deserializes video data received on up to 4 Gigabit
Multimedia Serial Links (GMSL) and outputs them on a CSI-2 port using up
to 4 data lanes.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Jacopo Mondi <jacopo+renesas@jmondi.org>
Signed-off-by: Kieran Bingham <kieran.bingham+renesas@ideasonboard.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
.../bindings/media/i2c/maxim,max9286.txt | 182 ++++++++++++++++++
1 file changed, 182 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt
diff --git a/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt
new file mode 100644
index 0000000000000000..afff77a55bb70744
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/maxim,max9286.txt
@@ -0,0 +1,182 @@
+Maxim Integrated Quad GMSL Deserializer
+---------------------------------------
+
+The MAX9286 deserializer receives video data on up to 4 Gigabit Multimedia
+Serial Links (GMSL) and outputs them on a CSI-2 D-PHY port using up to 4 data
+lanes.
+
+In addition to video data, the GMSL links carry a bidirectional control channel
+that encapsulates I2C messages. The MAX9286 forwards all I2C traffic not
+addressed to itself to the other side of the links, where a GMSL serializer
+will output it on a local I2C bus. In the other direction all I2C traffic
+received over GMSL by the MAX9286 is output on the local I2C bus.
+
+Required Properties:
+
+- compatible: Shall be "maxim,max9286"
+- reg: I2C device address
+
+Optional Properties:
+
+- poc-supply: Regulator providing Power over Coax to the cameras
+- enable-gpios: GPIO connected to the #PWDN pin with inverted polarity
+
+Required endpoint nodes:
+-----------------------
+
+The connections to the MAX9286 GMSL and its endpoint nodes are modelled using
+the OF graph bindings in accordance with the video interface bindings defined
+in Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+The following table lists the port number corresponding to each device port.
+
+ Port Description
+ ----------------------------------------
+ Port 0 GMSL Input 0
+ Port 1 GMSL Input 1
+ Port 2 GMSL Input 2
+ Port 3 GMSL Input 3
+ Port 4 CSI-2 Output
+
+Optional Endpoint Properties for GMSL Input Ports (Port [0-3]):
+
+- remote-endpoint: phandle to the remote GMSL source endpoint subnode in the
+ remote node port.
+
+Required Endpoint Properties for CSI-2 Output Port (Port 4):
+
+- remote-endpoint: phandle to the remote CSI-2 sink endpoint node.
+- data-lanes: array of physical CSI-2 data lane indexes.
+
+Required i2c-mux nodes:
+----------------------
+
+Each GMSL link is modelled as a child bus of an i2c bus multiplexer/switch, in
+accordance with bindings described in
+Documentation/devicetree/bindings/i2c/i2c-mux.txt. The serializer device on the
+remote end of the GMSL link shall be modelled as a child node of the
+corresponding I2C bus.
+
+Required i2c child bus properties:
+- all properties described as required i2c child bus nodes properties in
+ Documentation/devicetree/bindings/i2c/i2c-mux.txt.
+
+Example:
+-------
+
+ gmsl-deserializer@2c {
+ compatible = "maxim,max9286";
+ reg = <0x2c>;
+ poc-supply = <&camera_poc_12v>;
+ enable-gpios = <&gpio 13 GPIO_ACTIVE_HIGH>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ max9286_in0: endpoint {
+ remote-endpoint = <&rdacm20_out0>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ max9286_in1: endpoint {
+ remote-endpoint = <&rdacm20_out1>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+ max9286_in2: endpoint {
+ remote-endpoint = <&rdacm20_out2>;
+ };
+ };
+
+ port@3 {
+ reg = <3>;
+ max9286_in3: endpoint {
+ remote-endpoint = <&rdacm20_out3>;
+ };
+ };
+
+ port@4 {
+ reg = <4>;
+ max9286_out: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&csi40_in>;
+ };
+ };
+ };
+
+ i2c@0 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <0>;
+
+ camera@51 {
+ compatible = "imi,rdacm20";
+ reg = <0x51 0x61>;
+
+ port {
+ rdacm20_out0: endpoint {
+ remote-endpoint = <&max9286_in0>;
+ };
+ };
+
+ };
+ };
+
+ i2c@1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <1>;
+
+ camera@52 {
+ compatible = "imi,rdacm20";
+ reg = <0x52 0x62>;
+ port {
+ rdacm20_out1: endpoint {
+ remote-endpoint = <&max9286_in1>;
+ };
+ };
+ };
+ };
+
+ i2c@2 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <2>;
+
+ camera@53 {
+ compatible = "imi,rdacm20";
+ reg = <0x53 0x63>;
+ port {
+ rdacm20_out2: endpoint {
+ remote-endpoint = <&max9286_in2>;
+ };
+ };
+ };
+ };
+
+ i2c@3 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+ reg = <3>;
+
+ camera@54 {
+ compatible = "imi,rdacm20";
+ reg = <0x54 0x64>;
+ port {
+ rdacm20_out3: endpoint {
+ remote-endpoint = <&max9286_in3>;
+ };
+ };
+ };
+ };
+ };
--
2.22.0
next prev parent reply other threads:[~2019-08-09 4:07 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-09 4:05 [PATCH 0/2] max9286: Add MAX9286 driver with single camera support Niklas Söderlund
2019-08-09 4:05 ` Niklas Söderlund [this message]
2019-08-09 7:19 ` [PATCH 1/2] dt-bindings: media: i2c: Add bindings for Maxim Integrated MAX9286 Geert Uytterhoeven
2019-08-09 8:04 ` Kieran Bingham
2019-08-09 4:05 ` [PATCH 2/2] max9286: Add MAX9286 driver Niklas Söderlund
2019-08-09 8:09 ` Kieran Bingham
2019-08-09 12:04 ` Niklas Söderlund
2019-08-09 12:12 ` Kieran Bingham
2019-08-09 12:23 ` Niklas Söderlund
2019-08-09 12:59 ` Kieran Bingham
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