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media: dt-bindings: document the tegra CEC bindings
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1 * Tegra HDMI CEC hardware
2
3 The HDMI CEC module is present in Tegra SoCs and its purpose is to
4 handle communication between HDMI connected devices over the CEC bus.
5
6 Required properties:
7 - compatible : value should be one of the following:
8 "nvidia,tegra114-cec"
9 "nvidia,tegra124-cec"
10 "nvidia,tegra210-cec"
11 - reg : Physical base address of the IP registers and length of memory
12 mapped region.
13 - interrupts : HDMI CEC interrupt number to the CPU.
14 - clocks : from common clock binding: handle to HDMI CEC clock.
15 - clock-names : from common clock binding: must contain "cec",
16 corresponding to the entry in the clocks property.
17 - hdmi-phandle : phandle to the HDMI controller, see also cec.txt.
18
19 Example:
20
21 cec@70015000 {
22 compatible = "nvidia,tegra124-cec";
23 reg = <0x0 0x70015000 0x0 0x00001000>;
24 interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>;
25 clocks = <&tegra_car TEGRA124_CLK_CEC>;
26 clock-names = "cec";
27 };