1dc9df315SSebastian ReichelOMAP SSI controller bindings 2dc9df315SSebastian Reichel 38635d6b3STony LindgrenOMAP3's Synchronous Serial Interface (SSI) controller implements a 48635d6b3STony Lindgrenlegacy variant of MIPI's High Speed Synchronous Serial Interface (HSI), 58635d6b3STony Lindgrenwhile the controller found inside OMAP4 is supposed to be fully compliant 68635d6b3STony Lindgrenwith the HSI standard. 7dc9df315SSebastian Reichel 8dc9df315SSebastian ReichelRequired properties: 98635d6b3STony Lindgren- compatible: Should include "ti,omap3-ssi" or "ti,omap4-hsi" 10dc9df315SSebastian Reichel- reg-names: Contains the values "sys" and "gdd" (in this order). 11dc9df315SSebastian Reichel- reg: Contains a matching register specifier for each entry 12dc9df315SSebastian Reichel in reg-names. 13dc9df315SSebastian Reichel- interrupt-names: Contains the value "gdd_mpu". 14dc9df315SSebastian Reichel- interrupts: Contains matching interrupt information for each entry 15dc9df315SSebastian Reichel in interrupt-names. 16dc9df315SSebastian Reichel- ranges: Represents the bus address mapping between the main 17dc9df315SSebastian Reichel controller node and the child nodes below. 18dc9df315SSebastian Reichel- clock-names: Must include the following entries: 19dc9df315SSebastian Reichel "ssi_ssr_fck": The OMAP clock of that name 20dc9df315SSebastian Reichel "ssi_sst_fck": The OMAP clock of that name 21dc9df315SSebastian Reichel "ssi_ick": The OMAP clock of that name 22dc9df315SSebastian Reichel- clocks: Contains a matching clock specifier for each entry in 23dc9df315SSebastian Reichel clock-names. 24dc9df315SSebastian Reichel- #address-cells: Should be set to <1> 25dc9df315SSebastian Reichel- #size-cells: Should be set to <1> 26dc9df315SSebastian Reichel 27dc9df315SSebastian ReichelEach port is represented as a sub-node of the ti,omap3-ssi device. 28dc9df315SSebastian Reichel 29dc9df315SSebastian ReichelRequired Port sub-node properties: 30dc9df315SSebastian Reichel- compatible: Should be set to the following value 31dc9df315SSebastian Reichel ti,omap3-ssi-port (applicable to OMAP34xx devices) 328635d6b3STony Lindgren ti,omap4-hsi-port (applicable to OMAP44xx devices) 33dc9df315SSebastian Reichel- reg-names: Contains the values "tx" and "rx" (in this order). 34dc9df315SSebastian Reichel- reg: Contains a matching register specifier for each entry 35dc9df315SSebastian Reichel in reg-names. 36dc9df315SSebastian Reichel- interrupts: Should contain interrupt specifiers for mpu interrupts 37dc9df315SSebastian Reichel 0 and 1 (in this order). 38dc9df315SSebastian Reichel- ti,ssi-cawake-gpio: Defines which GPIO pin is used to signify CAWAKE 39dc9df315SSebastian Reichel events for the port. This is an optional board-specific 40dc9df315SSebastian Reichel property. If it's missing the port will not be 41dc9df315SSebastian Reichel enabled. 42dc9df315SSebastian Reichel 438635d6b3STony LindgrenOptional properties: 448635d6b3STony Lindgren- ti,hwmods: Shall contain TI interconnect module name if needed 458635d6b3STony Lindgren by the SoC 468635d6b3STony Lindgren 47dc9df315SSebastian ReichelExample for Nokia N900: 48dc9df315SSebastian Reichel 49dc9df315SSebastian Reichelssi-controller@48058000 { 50dc9df315SSebastian Reichel compatible = "ti,omap3-ssi"; 51dc9df315SSebastian Reichel 52dc9df315SSebastian Reichel /* needed until hwmod is updated to use the compatible string */ 53dc9df315SSebastian Reichel ti,hwmods = "ssi"; 54dc9df315SSebastian Reichel 55dc9df315SSebastian Reichel reg = <0x48058000 0x1000>, 56dc9df315SSebastian Reichel <0x48059000 0x1000>; 57dc9df315SSebastian Reichel reg-names = "sys", 58dc9df315SSebastian Reichel "gdd"; 59dc9df315SSebastian Reichel 60dc9df315SSebastian Reichel interrupts = <55>; 61dc9df315SSebastian Reichel interrupt-names = "gdd_mpu"; 62dc9df315SSebastian Reichel 63dc9df315SSebastian Reichel clocks = <&ssi_ssr_fck>, 64dc9df315SSebastian Reichel <&ssi_sst_fck>, 65dc9df315SSebastian Reichel <&ssi_ick>; 66dc9df315SSebastian Reichel clock-names = "ssi_ssr_fck", 67dc9df315SSebastian Reichel "ssi_sst_fck", 68dc9df315SSebastian Reichel "ssi_ick"; 69dc9df315SSebastian Reichel 70dc9df315SSebastian Reichel #address-cells = <1>; 71dc9df315SSebastian Reichel #size-cells = <1>; 72dc9df315SSebastian Reichel ranges; 73dc9df315SSebastian Reichel 74dc9df315SSebastian Reichel ssi-port@4805a000 { 75dc9df315SSebastian Reichel compatible = "ti,omap3-ssi-port"; 76dc9df315SSebastian Reichel 77dc9df315SSebastian Reichel reg = <0x4805a000 0x800>, 78dc9df315SSebastian Reichel <0x4805a800 0x800>; 79dc9df315SSebastian Reichel reg-names = "tx", 80dc9df315SSebastian Reichel "rx"; 81dc9df315SSebastian Reichel 82dc9df315SSebastian Reichel interrupt-parent = <&intc>; 83dc9df315SSebastian Reichel interrupts = <67>, 84dc9df315SSebastian Reichel <68>; 85dc9df315SSebastian Reichel 86dc9df315SSebastian Reichel ti,ssi-cawake-gpio = <&gpio5 23 GPIO_ACTIVE_HIGH>; /* 151 */ 87dc9df315SSebastian Reichel } 88dc9df315SSebastian Reichel 89dc9df315SSebastian Reichel ssi-port@4805a000 { 90dc9df315SSebastian Reichel compatible = "ti,omap3-ssi-port"; 91dc9df315SSebastian Reichel 92dc9df315SSebastian Reichel reg = <0x4805b000 0x800>, 93dc9df315SSebastian Reichel <0x4805b800 0x800>; 94dc9df315SSebastian Reichel reg-names = "tx", 95dc9df315SSebastian Reichel "rx"; 96dc9df315SSebastian Reichel 97dc9df315SSebastian Reichel interrupt-parent = <&intc>; 98dc9df315SSebastian Reichel interrupts = <69>, 99dc9df315SSebastian Reichel <70>; 100dc9df315SSebastian Reichel 101dc9df315SSebastian Reichel } 102dc9df315SSebastian Reichel} 103