Kernel-3.10.0-957.el7_emif

• EMIF family of TI SDRAM controllers

EMIF - External Memory Interface - is an SDRAM controller used in
TI SoCs. EMIF supports, based on the IP revision, one or more of
DDR2/DDR3/LPDDR2 protocols. This binding describes a given instance
of the EMIF IP and memory parts attached to it.

Required properties:

• compatible : Should be of the form “ti,emif-“ where
  is the IP revision of the specific EMIF instance.

• phy-type : indicating the DDR phy type. Following are the
  allowed values
  <1> : Attila PHY
  <2> : Intelli PHY

• device-handle : phandle to a “lpddr2” node representing the memory part

• ti,hwmods : For TI hwmods processing and omap device creation
  the value shall be “emif“ where is the number of the EMIF
  instance with base 1.

Optional properties:

• cs1-used : Have this property if CS1 of this EMIF
  instance has a memory part attached to it. If there is a memory
  part attached to CS1, it should be the same type as the one on CS0,
  so there is no need to give the details of this memory part.

• cal-resistor-per-cs : Have this property if the board has one
  calibration resistor per chip-select.

• hw-caps-read-idle-ctrl: Have this property if the controller
  supports read idle window programming

• hw-caps-dll-calib-ctrl: Have this property if the controller
  supports dll calibration control

• hw-caps-ll-interface : Have this property if the controller
  has a low latency interface and corresponding interrupt events

• hw-caps-temp-alert : Have this property if the controller
  has capability for generating SDRAM temperature alerts

Example:

emif1: emif@0x4c000000 {
compatible = “ti,emif-4d”;
ti,hwmods = “emif2”;
phy-type = <1>;
device-handle = <&elpida_ECB240ABACN>;
cs1-used;
hw-caps-read-idle-ctrl;
hw-caps-ll-interface;
hw-caps-temp-alert;
};