I'm new to using the media controller and struggling to set up a sink
in my device tree for a Xilinx VDMA output. I have the below in my
device tree. The problem is the output of my VDMA is going to a
hardware element that doesn't have/need a driver. So, when I query the
link with media_entity_get_info it tells me there are 0 links on
"video_cap output 0".
is there a endpoint I can/should be using instead of the
hdmi-connector I'm currently using that will give me a valid link?
(BTW, if this is not an appropriate question for this list please
redirect me.)
axivdma@43000000 {
compatible = "xlnx,axi-vdma-1.00.a";
reg = < 0x43000000 0x10000 >;
xlnx,flush-fsync = <0x1>;
xlnx,num-fstores = <0x3>;
#dma-cells = <0x1>;
linux,phandle = <0xc>;
phandle = <0xc>;
dma-channel@43000000 {
compatible = "xlnx,axi-vdma-mm2s-channel";
interrupt-parent = <0x3>;
interrupts = <0 90 4>;
xlnx,datawidth = <0x10>;
};
dma-channel@43000030 {
compatible = "xlnx,axi-vdma-s2mm-channel";
interrupt-parent = <0x3>;
interrupts = <0 91 4>;
xlnx,datawidth = <0x10>;
};
};
video_cap {
compatible = "xlnx,video";
dmas = <0xc 0x1 0xc 0x0>;
dma-names = "port0", "port1";
ports {
#address-cells = <0x1>;
#size-cells = <0x0>;
port@0 {
reg = <0x0>;
direction = "input";
endpoint {
remote-endpoint = <0xd>;
linux,phandle = <0xb>;
phandle = <0xb>;
};
};
port@1 {
reg = <0x1>;
direction = "output";
endpoint {
remote-endpoint = <0xe>;
linux,phandle = <0xa>;
phandle = <0xa>;
};
};
};
};
connector@1 {
compatible = "hdmi-connector";
label = "hdmi";
type = "a";
port {
endpoint {
remote-endpoint = <0xa>;
linux,phandle = <0xe>;
phandle = <0xe>;
};
};
};
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