1 Texas Instruments TI SCI Clock Controller
2 =========================================
4 All clocks on Texas Instruments' SoCs that contain a System Controller,
5 are only controlled by this entity. Communication between a host processor
6 running an OS and the System Controller happens through a protocol known
7 as TI SCI[1]. This clock implementation plugs into the common clock
8 framework and makes use of the TI SCI protocol on clock API requests.
10 [1] http://processors.wiki.ti.com/index.php/TISCI
14 The clock controller node represents the clocks managed by the SYSFW. Because
15 this relies on the TI SCI protocol to communicate with the SYSFW it must be a
16 child of the sysfw node.
20 - compatible: Must be "ti,k2g-sci-clk"
21 - #clock-cells: Must be be 2. In clock consumers, this cell represents the
22 device ID and clock ID exposed by the SYSFW firmware.
27 compatible = "ti,k2g-sci";
30 compatible = "ti,k2g-sci-clk";
37 Hardware blocks supplied by a clock should contain a "clocks" property that is
38 a phandle pointing to the clock controller node along with an index representing
39 the device id together with a clock ID to be passed to the SYSFW for device
44 - clocks: phandle pointing to the corresponding clock node, an ID representing
45 the device, and an index representing a clock.
49 uart2: serial@02800000 {
50 compatible = "ti,omap4-uart";
52 clocks = <&k3_clks 0x0007 1>;