xref: /freebsd/sys/contrib/device-tree/Bindings/clock/ti,sci-clk.txt (revision 0a36787e4c1fa0cf77dcf83be0867178476e372b)
1Texas Instruments TI-SCI Clocks
2===============================
3
4All clocks on Texas Instruments' SoCs that contain a System Controller,
5are only controlled by this entity. Communication between a host processor
6running an OS and the System Controller happens through a protocol known
7as TI-SCI[1]. This clock implementation plugs into the common clock
8framework and makes use of the TI-SCI protocol on clock API requests.
9
10[1] Documentation/devicetree/bindings/arm/keystone/ti,sci.txt
11
12Required properties:
13-------------------
14- compatible: Must be "ti,k2g-sci-clk"
15- #clock-cells: Shall be 2.
16  In clock consumers, this cell represents the device ID and clock ID
17  exposed by the PM firmware. The list of valid values for the device IDs
18  and clocks IDs for 66AK2G SoC are documented at
19  http://processors.wiki.ti.com/index.php/TISCI#66AK2G02_Data
20
21Examples:
22--------
23
24pmmc: pmmc {
25	compatible = "ti,k2g-sci";
26
27	k2g_clks: clocks {
28		compatible = "ti,k2g-sci-clk";
29		#clock-cells = <2>;
30	};
31};
32
33uart0: serial@2530c00 {
34	compatible = "ns16550a";
35	clocks = <&k2g_clks 0x2c 0>;
36};
37