1* EMIF family of TI SDRAM controllers
2
3EMIF - External Memory Interface - is an SDRAM controller used in
4TI SoCs. EMIF supports, based on the IP revision, one or more of
5DDR2/DDR3/LPDDR2 protocols. This binding describes a given instance
6of the EMIF IP and memory parts attached to it.
7
8Required properties:
9- compatible	: Should be of the form "ti,emif-<ip-rev>" where <ip-rev>
10  is the IP revision of the specific EMIF instance. For newer controllers,
11  compatible should be one of the following:
12  	     "ti,emif-am3352"
13	     "ti,emif-am4372"
14
15- phy-type	: <u32> indicating the DDR phy type. Following are the
16  allowed values
17  <1>	: Attila PHY
18  <2>	: Intelli PHY
19
20- device-handle	: phandle to a "lpddr2" node representing the memory part
21
22- ti,hwmods	: For TI hwmods processing and omap device creation
23  the value shall be "emif<n>" where <n> is the number of the EMIF
24  instance with base 1.
25
26Required only for "ti,emif-am3352" and "ti,emif-am4372":
27- sram			: Phandles for generic sram driver nodes,
28  first should be type 'protect-exec' for the driver to use to copy
29  and run PM functions, second should be regular pool to be used for
30  data region for code. See Documentation/devicetree/bindings/sram/sram.txt
31  for more details.
32
33Optional properties:
34- cs1-used		: Have this property if CS1 of this EMIF
35  instance has a memory part attached to it. If there is a memory
36  part attached to CS1, it should be the same type as the one on CS0,
37  so there is no need to give the details of this memory part.
38
39- cal-resistor-per-cs	: Have this property if the board has one
40  calibration resistor per chip-select.
41
42- hw-caps-read-idle-ctrl: Have this property if the controller
43  supports read idle window programming
44
45- hw-caps-dll-calib-ctrl: Have this property if the controller
46  supports dll calibration control
47
48- hw-caps-ll-interface	: Have this property if the controller
49  has a low latency interface and corresponding interrupt events
50
51- hw-caps-temp-alert	: Have this property if the controller
52  has capability for generating SDRAM temperature alerts
53
54-Examples:
55
56emif1: emif@4c000000 {
57	compatible	= "ti,emif-4d";
58	ti,hwmods	= "emif2";
59	phy-type	= <1>;
60	device-handle	= <&elpida_ECB240ABACN>;
61	cs1-used;
62	hw-caps-read-idle-ctrl;
63	hw-caps-ll-interface;
64	hw-caps-temp-alert;
65};
66
67/* From am33xx.dtsi */
68emif: emif@4c000000 {
69        compatible = "ti,emif-am3352";
70        reg =   <0x4C000000 0x1000>;
71        sram = <&pm_sram_code
72                &pm_sram_data>;
73};
74