1 * EMIF family of TI SDRAM controllers
3 EMIF - External Memory Interface - is an SDRAM controller used in
4 TI SoCs. EMIF supports, based on the IP revision, one or more of
5 DDR2/DDR3/LPDDR2 protocols. This binding describes a given instance
6 of the EMIF IP and memory parts attached to it. Certain revisions
7 of the EMIF controller also contain optional ECC support, which
8 corrects one bit errors and detects two bit errors.
11 - compatible : Should be of the form "ti,emif-<ip-rev>" where <ip-rev>
12 is the IP revision of the specific EMIF instance. For newer controllers,
13 compatible should be one of the following:
19 - phy-type : <u32> indicating the DDR phy type. Following are the
24 - device-handle : phandle to a "lpddr2" node representing the memory part
26 - ti,hwmods : For TI hwmods processing and omap device creation
27 the value shall be "emif<n>" where <n> is the number of the EMIF
29 - interrupts : interrupt used by the controller
31 Required only for "ti,emif-am3352" and "ti,emif-am4372":
32 - sram : Phandles for generic sram driver nodes,
33 first should be type 'protect-exec' for the driver to use to copy
34 and run PM functions, second should be regular pool to be used for
35 data region for code. See Documentation/devicetree/bindings/sram/sram.yaml
39 - cs1-used : Have this property if CS1 of this EMIF
40 instance has a memory part attached to it. If there is a memory
41 part attached to CS1, it should be the same type as the one on CS0,
42 so there is no need to give the details of this memory part.
44 - cal-resistor-per-cs : Have this property if the board has one
45 calibration resistor per chip-select.
47 - hw-caps-read-idle-ctrl: Have this property if the controller
48 supports read idle window programming
50 - hw-caps-dll-calib-ctrl: Have this property if the controller
51 supports dll calibration control
53 - hw-caps-ll-interface : Have this property if the controller
54 has a low latency interface and corresponding interrupt events
56 - hw-caps-temp-alert : Have this property if the controller
57 has capability for generating SDRAM temperature alerts
61 emif1: emif@4c000000 {
62 compatible = "ti,emif-4d";
65 device-handle = <&elpida_ECB240ABACN>;
67 hw-caps-read-idle-ctrl;
72 /* From am33xx.dtsi */
74 compatible = "ti,emif-am3352";
75 reg = <0x4C000000 0x1000>;
80 emif1: emif@4c000000 {
81 compatible = "ti,emif-dra7xx";
82 reg = <0x4c000000 0x200>;
83 interrupts = <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;