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Xilinx VPSS Color Space Converter (CSC)
-----------------------------------------
The Xilinx VPSS Color Space Converter (CSC) is a Video IP that supports
color space conversion from RGB input to YUV output.
Required properties:
- compatible: Must be "xlnx,v-vpss-csc".
- reg: Physical base address and length of the registers set for the device.
- clocks: Reference to the clock that drives the ap_clk signal.
- xlnx,max-height: Maximum number of lines.
Valid range from 64 to 4320.
- xlnx,max-width: Maximum number of pixels in a line.
Valid range from 64 to 8192.
- reset-gpios: Specifier for a GPIO that assert VPSS CSC (AP_RST_N) reset.
- ports: Video ports, using the DT bindings defined in ../video-interfaces.txt.
The scaler has an input port (0) and an output port (1).
Required port properties:
- xlnx,video-format: Must be XVIP_VF_RBG, XVIP_VF_YUV_444 or XVIP_VF_YUV_422
for input port (0) and XVIP_VF_RBG, XVIP_VF_YUV_444 or XVIP_VF_YUV_422
for output port (1). See <dt-bindings/media/xilinx-vip.h> for more details.
- xlnx,video-width: Video width as defined in video.txt. Must be either 8 or 10.
Example:
csc_1:csc@a0040000 {
compatible = "xlnx,v-vpss-csc";
reg = <0x0 0xa0040000 0x0 0x10000>;
clocks = <&vid_stream_clk>;
reset-gpios = <&gpio 84 1>;
xlnx,max-width = <3840>;
xlnx,max-height = <2160>;
ports {
#address-cells = <1>;
#size-cells = <0>;
/* Sink Pad */
port@0 {
reg = <0>;
xlnx,video-format = <XVIP_VF_RBG>;
xlnx,video-width = <8>;
csc_in: endpoint {
remote-endpoint = <&gamma_out>;
};
};
/* Source Pad */
port@1 {
reg = <1>;
xlnx,video-format = <XVIP_VF_RBG>;
xlnx,video-width = <8>;
csc_out: endpoint {
remote-endpoint = <&scalar_in>;
};
};
};
};
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