[PATCH v2 1/2] media: dt-bindings: add bindings for Toshiba TC358746

[Marco Felsch <m.felsch@xxxxxxxxxxxxxx>]

Add corresponding dt-bindings for the Toshiba tc358746 device and update
the MAINTAINERS file too.

Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
Hi Rob,

I droped your reviewed-by tag since there where several changes.

Changes
v2:
 - use the Documentation/devicetree/bindings/media/ti,omap3isp.txt
   formatting scheme
 - Adapt introducing paragraph according Jacopo's comments
 - drop the clock-names property
 - drop the clock-lanes (csi-2) property
 - adapt the property descriptions accroding Jacopo's comments
 - use port@0 as input and port@1 as output port instead of mapping
   port@0 to parallel and port@1 to csi-2 interface
 - Adapt port/endpoint description according Jacopo's and Sakari's
   comments
 - Adapt the example
 - squash v1 patch-3 and patch-1
 - set status to Maintained

 .../bindings/media/i2c/toshiba,tc358746.txt   | 95 +++++++++++++++++++
 MAINTAINERS                                   |  7 ++
 2 files changed, 102 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.txt

diff --git a/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.txt b/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.txt
new file mode 100644
index 000000000000..e79b45ee050e
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.txt
@@ -0,0 +1,95 @@
+Toshiba TC358746 Parallel to MIPI CSI2-TX or MIPI CSI2-RX to Parallel Bridge
+============================================================================
+
+The Toshiba TC358746 converts a parallel into a MIPI CSI-2 stream. The direction
+can be either parallel-in -> csi-out e.g. to connect a parallel camera to a
+MIPI CSI-2 host or csi-in -> parallel-out e.g. to connect a parallel display to
+a MIPI CSI-2 host. It's programmable trough I2C and SPI. The SPI interface is
+only supported in parallel-in -> csi-out mode.
+
+Required properties
+-------------------
+
+- compatible		: Shall be "toshiba,tc358746"
+- reg			: Shall be <0x0e>
+- clocks		: Phandle to the reference clock source
+
+Optional properties
+-------------------
+
+- reset-gpios		: Phandle to the GPIO connected to the reset input pin
+
+Port nodes (required)
+=====================
+
+The device node must contain two ports children nodes which should be grouped
+within a 'ports' node. The first port describes the input connection, the second
+one describes the output one. Each port shall contain one endpoint subnode that
+connects to a remote device and specifies the bus type of the input and output
+ports. Only one endpoint per port shall be present.
+
+More documentation on these bindings is available in [1].
+
+reg			: The interface:
+			  0 - Input, either parallel or MIPI CSI-2
+			  1 - Output, either parallel or MIPI CSI-2
+
+Endpoint nodes (required)
+=========================
+
+Required properties
+-------------------
+
+- bus-width		: Look at [1] for more information (Parallel endpoint)
+- data-lanes		: Look at [1] for more information (CSI-2 endpoint)
+- link-frequencies	: Array of frequencies the driver can choose to
+			  full-fill the parallel timings calculation. Look at
+			  [1] for more information (CSI-2 endpoint)
+
+Optional properties
+-------------------
+
+- bus-type		: Look at [1] for more information
+- clock-noncontinuous	: Look at [1] for more information (CSI-2 endpoint)
+
+[1] Documentation/devicetree/bindings/media/video-interfaces.txt
+
+Example
+=======
+
+&i2c {
+	csi-bridge@0e {
+		reg = <0x0e>;
+		compatible = "toshiba,tc358746";
+		pinctrl-names = "default";
+		clocks = <&clk_cam_ref>;
+		reset-gpios = <&gpio3 2 GPIO_ACTIVE_LOW>;
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			/* Input */
+			port@0 {
+				reg = <0>;
+
+				tc358746_parallel_in: endpoint {
+					bus-width = <8>;
+					remote-endpoint = <&micron_parallel_out>;
+				};
+			};
+
+			/* Output */
+			port@1 {
+				reg = <1>;
+
+				tc358746_mipi2_out: endpoint {
+					remote-endpoint = <&mipi_csi2_in>;
+					data-lanes = <1 2>;
+					clock-noncontinuous;
+					link-frequencies = /bits/ 64 <216000000>;
+				};
+			};
+		};
+	};
+};
diff --git a/MAINTAINERS b/MAINTAINERS
index 57f496cff999..833b3c8fb301 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -15955,6 +15955,13 @@ S:	Maintained
 F:	drivers/media/i2c/tc358743*
 F:	include/media/i2c/tc358743.h
 
+TOSHIBA TC358746 DRIVER
+M:	Marco Felsch <kernel@xxxxxxxxxxxxxx>
+L:	linux-media@xxxxxxxxxxxxxxx
+S:	Maintained
+F:	drivers/media/i2c/tc358746*
+F:	Documentation/devicetree/bindings/media/i2c/toshiba,tc358746.txt
+
 TOSHIBA WMI HOTKEYS DRIVER
 M:	Azael Avalos <coproscefalo@xxxxxxxxx>
 L:	platform-driver-x86@xxxxxxxxxxxxxxx
-- 
2.20.1