The Design and Implementation of the FreeBSD Operating System, Second Edition
Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)

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FreeBSD/Linux Kernel Cross Reference
sys/contrib/device-tree/src/arm/elpida_ecb240abacn.dtsi

Version: -  FREEBSD  -  FREEBSD-13-STABLE  -  FREEBSD-13-0  -  FREEBSD-12-STABLE  -  FREEBSD-12-0  -  FREEBSD-11-STABLE  -  FREEBSD-11-0  -  FREEBSD-10-STABLE  -  FREEBSD-10-0  -  FREEBSD-9-STABLE  -  FREEBSD-9-0  -  FREEBSD-8-STABLE  -  FREEBSD-8-0  -  FREEBSD-7-STABLE  -  FREEBSD-7-0  -  FREEBSD-6-STABLE  -  FREEBSD-6-0  -  FREEBSD-5-STABLE  -  FREEBSD-5-0  -  FREEBSD-4-STABLE  -  FREEBSD-3-STABLE  -  FREEBSD22  -  l41  -  OPENBSD  -  linux-2.6  -  MK84  -  PLAN9  -  xnu-8792 
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    1 // SPDX-License-Identifier: GPL-2.0
    2 /*
    3  * Common devices used in different OMAP boards
    4  */
    5 
    6 / {
    7         elpida_ECB240ABACN: lpddr2 {
    8                 compatible      = "elpida,ECB240ABACN","jedec,lpddr2-s4";
    9                 density         = <2048>;
   10                 io-width        = <32>;
   11 
   12                 tRPab-min-tck   = <3>;
   13                 tRCD-min-tck    = <3>;
   14                 tWR-min-tck     = <3>;
   15                 tRASmin-min-tck = <3>;
   16                 tRRD-min-tck    = <2>;
   17                 tWTR-min-tck    = <2>;
   18                 tXP-min-tck     = <2>;
   19                 tRTP-min-tck    = <2>;
   20                 tCKE-min-tck    = <3>;
   21                 tCKESR-min-tck  = <3>;
   22                 tFAW-min-tck    = <8>;
   23 
   24                 timings_elpida_ECB240ABACN_400mhz: lpddr2-timings@0 {
   25                         compatible      = "jedec,lpddr2-timings";
   26                         min-freq        = <10000000>;
   27                         max-freq        = <400000000>;
   28                         tRPab           = <21000>;
   29                         tRCD            = <18000>;
   30                         tWR             = <15000>;
   31                         tRAS-min        = <42000>;
   32                         tRRD            = <10000>;
   33                         tWTR            = <7500>;
   34                         tXP             = <7500>;
   35                         tRTP            = <7500>;
   36                         tCKESR          = <15000>;
   37                         tDQSCK-max      = <5500>;
   38                         tFAW            = <50000>;
   39                         tZQCS           = <90000>;
   40                         tZQCL           = <360000>;
   41                         tZQinit         = <1000000>;
   42                         tRAS-max-ns     = <70000>;
   43                         tDQSCK-max-derated = <6000>;
   44                 };
   45 
   46                 timings_elpida_ECB240ABACN_200mhz: lpddr2-timings@1 {
   47                         compatible      = "jedec,lpddr2-timings";
   48                         min-freq        = <10000000>;
   49                         max-freq        = <200000000>;
   50                         tRPab           = <21000>;
   51                         tRCD            = <18000>;
   52                         tWR             = <15000>;
   53                         tRAS-min        = <42000>;
   54                         tRRD            = <10000>;
   55                         tWTR            = <10000>;
   56                         tXP             = <7500>;
   57                         tRTP            = <7500>;
   58                         tCKESR          = <15000>;
   59                         tDQSCK-max      = <5500>;
   60                         tFAW            = <50000>;
   61                         tZQCS           = <90000>;
   62                         tZQCL           = <360000>;
   63                         tZQinit         = <1000000>;
   64                         tRAS-max-ns     = <70000>;
   65                         tDQSCK-max-derated = <6000>;
   66                 };
   67         };
   68 };

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