tc358840: add Toshiba tc358840 HDMI-to-CSI bridge.

Signed-off-by: Sasasu <i@sasa.su>

Documentation/devicetree/bindings/media/i2c/toshiba,tc358840.txt

@@ -0,0 +1,49 @@
+# SPDX-License-Identifier: GPL-2.0
+* Toshiba TC358840 HDMI-RX to MIPI CSI2-TX Bridge
+
+The Toshiba TC358840 HDMI-RX to MIPI CSI2-TX (H2C) is a bridge that converts
+a HDMI stream to MIPI CSI-2 TX. It is programmable through I2C.
+
+Required Properties:
+
+- compatible: value should be "toshiba,tc358840"
+- clocks, clock-names: should contain a phandle link to the reference clock
+		       source, the clock input is named "refclk".
+
+Optional Properties:
+
+- reset-gpios: gpio phandle GPIO connected to the reset pin
+- interrupts: GPIO connected to the interrupt pin
+- data-lanes: should be <1 2 3 4> for four-lane operation,
+	      or <1 2> for two-lane operation
+- clock-lanes: should be <0>
+- clock-noncontinuous: Presence of this boolean property decides whether the
+		       MIPI CSI-2 clock is continuous or non-continuous.
+- link-frequencies: List of allowed link frequencies in Hz. Each frequency is
+		    expressed as a 64-bit big-endian integer. The frequency
+		    is half of the bps per lane due to DDR transmission.
+
+For further information on the MIPI CSI-2 endpoint node properties, see
+Documentation/devicetree/bindings/media/video-interfaces.txt.
+
+Example:
+
+	tc358840@f {
+		compatible = "toshiba,tc358840";
+		reg = <0x0f>;
+		clocks = <&hdmi_osc>;
+		clock-names = "refclk";
+		reset-gpios = <&gpio6 9 GPIO_ACTIVE_LOW>;
+		interrupt-parent = <&gpio2>;
+		interrupts = <5 IRQ_TYPE_LEVEL_HIGH>;
+
+		port {
+			tc358840_out: endpoint {
+				remote-endpoint = <&mipi_csi2_in>;
+				data-lanes = <1 2 3 4>;
+				clock-lanes = <0>;
+				clock-noncontinuous;
+				link-frequencies = /bits/ 64 <297000000>;
+			};
+		};
+	};

MAINTAINERS

@@ -17736,6 +17736,14 @@ S:	Maintained
 F:	drivers/media/i2c/tc358743*
 F:	include/media/i2c/tc358743.h
 
+TOSHIBA TC358840 DRIVER
+M:	Hans Verkuil <hansverk@cisco.com>
+L:	linux-media@vger.kernel.org
+S:	Maintained
+F:	drivers/media/i2c/tc358840*
+F:	include/media/i2c/tc358840.h
+F:	Documentation/devicetree/bindings/media/i2c/toshiba,tc358840.txt
+
 TOSHIBA WMI HOTKEYS DRIVER
 M:	Azael Avalos <coproscefalo@gmail.com>
 L:	platform-driver-x86@vger.kernel.org

drivers/media/i2c/Kconfig

@@ -376,6 +376,17 @@ config VIDEO_TC358743
 	  To compile this driver as a module, choose M here: the
 	  module will be called tc358743.
 
+config VIDEO_TC358840
+	tristate "Toshiba TC358840 decoder"
+	depends on VIDEO_V4L2 && I2C && VIDEO_V4L2_SUBDEV_API
+	select HDMI
+	select V4L2_FWNODE
+	help
+	  Support for the Toshiba TC358840 HDMI to MIPI CSI-2 bridge.
+
+	  To compile this driver as a module, choose M here: the
+	  module will be called tc358840.
+
 config VIDEO_TC358743_CEC
 	bool "Enable Toshiba TC358743 CEC support"
 	depends on VIDEO_TC358743

drivers/media/i2c/Makefile

@@ -111,6 +111,7 @@ obj-$(CONFIG_VIDEO_I2C)		+= video-i2c.o
 obj-$(CONFIG_VIDEO_ML86V7667)	+= ml86v7667.o
 obj-$(CONFIG_VIDEO_OV2659)	+= ov2659.o
 obj-$(CONFIG_VIDEO_TC358743)	+= tc358743.o
+obj-$(CONFIG_VIDEO_TC358840)	+= tc358840.o
 obj-$(CONFIG_VIDEO_HI556)	+= hi556.o
 obj-$(CONFIG_VIDEO_IMX214)	+= imx214.o
 obj-$(CONFIG_VIDEO_IMX219)	+= imx219.o