1 OMAP SSI controller bindings
3 OMAP Synchronous Serial Interface (SSI) controller implements a legacy
4 variant of MIPI's High Speed Synchronous Serial Interface (HSI).
7 - compatible: Should include "ti,omap3-ssi".
8 - reg-names: Contains the values "sys" and "gdd" (in this order).
9 - reg: Contains a matching register specifier for each entry
11 - interrupt-names: Contains the value "gdd_mpu".
12 - interrupts: Contains matching interrupt information for each entry
14 - ranges: Represents the bus address mapping between the main
15 controller node and the child nodes below.
16 - clock-names: Must include the following entries:
17 "ssi_ssr_fck": The OMAP clock of that name
18 "ssi_sst_fck": The OMAP clock of that name
19 "ssi_ick": The OMAP clock of that name
20 - clocks: Contains a matching clock specifier for each entry in
22 - #address-cells: Should be set to <1>
23 - #size-cells: Should be set to <1>
25 Each port is represented as a sub-node of the ti,omap3-ssi device.
27 Required Port sub-node properties:
28 - compatible: Should be set to the following value
29 ti,omap3-ssi-port (applicable to OMAP34xx devices)
30 - reg-names: Contains the values "tx" and "rx" (in this order).
31 - reg: Contains a matching register specifier for each entry
33 - interrupt-parent Should be a phandle for the interrupt controller
34 - interrupts: Should contain interrupt specifiers for mpu interrupts
35 0 and 1 (in this order).
36 - ti,ssi-cawake-gpio: Defines which GPIO pin is used to signify CAWAKE
37 events for the port. This is an optional board-specific
38 property. If it's missing the port will not be
41 Example for Nokia N900:
43 ssi-controller@48058000 {
44 compatible = "ti,omap3-ssi";
46 /* needed until hwmod is updated to use the compatible string */
49 reg = <0x48058000 0x1000>,
55 interrupt-names = "gdd_mpu";
57 clocks = <&ssi_ssr_fck>,
60 clock-names = "ssi_ssr_fck",
69 compatible = "ti,omap3-ssi-port";
71 reg = <0x4805a000 0x800>,
76 interrupt-parent = <&intc>;
80 ti,ssi-cawake-gpio = <&gpio5 23 GPIO_ACTIVE_HIGH>; /* 151 */
84 compatible = "ti,omap3-ssi-port";
86 reg = <0x4805b000 0x800>,
91 interrupt-parent = <&intc>;
95 status = "disabled"; /* second port is not used on N900 */