Well, now it is supported. Please check mx53.dtsi:
| | | tve: tve@63ff0000 { |
| | | | compatible = "fsl,imx53-tve"; |
| | | | reg = <0x63ff0000 0x1000>; |
| | | | interrupts = <92>; |
| | | | clocks = <&clks 69>, <&clks 116>; |
| | | | clock-names = "tve", "di_sel"; |
| | | | crtcs = <&ipu 1>; |
| | | | status = "disabled"; |
| | | }; |
