arch/arm/boot/dts/samsung_k3pe0e000b.dtsi

   1 /*
   2  * Timings and Geometry for Samsung K3PE0E000B memory part
   3  */
   4
   5 / {
   6         samsung_K3PE0E000B: lpddr2 {
   7                 compatible      = "Samsung,K3PE0E000B","jedec,lpddr2-s4";
   8                 density         = <4096>;
   9                 io-width        = <32>;
  10
  11                 tRPab-min-tck   = <3>;
  12                 tRCD-min-tck    = <3>;
  13                 tWR-min-tck     = <3>;
  14                 tRASmin-min-tck = <3>;
  15                 tRRD-min-tck    = <2>;
  16                 tWTR-min-tck    = <2>;
  17                 tXP-min-tck     = <2>;
  18                 tRTP-min-tck    = <2>;
  19                 tCKE-min-tck    = <3>;
  20                 tCKESR-min-tck  = <3>;
  21                 tFAW-min-tck    = <8>;
  22
  23                 timings_samsung_K3PE0E000B_533MHz: lpddr2-timings@0 {
  24                         compatible      = "jedec,lpddr2-timings";
  25                         min-freq        = <10000000>;
  26                         max-freq        = <533333333>;
  27                         tRPab           = <21000>;
  28                         tRCD            = <18000>;
  29                         tWR             = <15000>;
  30                         tRAS-min        = <42000>;
  31                         tRRD            = <10000>;
  32                         tWTR            = <7500>;
  33                         tXP             = <7500>;
  34                         tRTP            = <7500>;
  35                         tCKESR          = <15000>;
  36                         tDQSCK-max      = <5500>;
  37                         tFAW            = <50000>;
  38                         tZQCS           = <90000>;
  39                         tZQCL           = <360000>;
  40                         tZQinit         = <1000000>;
  41                         tRAS-max-ns     = <70000>;
  42                         tDQSCK-max-derated = <6000>;
  43                 };
  44
  45                 timings_samsung_K3PE0E000B_266MHz: lpddr2-timings@1 {
  46                         compatible      = "jedec,lpddr2-timings";
  47                         min-freq        = <10000000>;
  48                         max-freq        = <266666666>;
  49                         tRPab           = <21000>;
  50                         tRCD            = <18000>;
  51                         tWR             = <15000>;
  52                         tRAS-min        = <42000>;
  53                         tRRD            = <10000>;
  54                         tWTR            = <7500>;
  55                         tXP             = <7500>;
  56                         tRTP            = <7500>;
  57                         tCKESR          = <15000>;
  58                         tDQSCK-max      = <5500>;
  59                         tFAW            = <50000>;
  60                         tZQCS           = <90000>;
  61                         tZQCL           = <360000>;
  62                         tZQinit         = <1000000>;
  63                         tRAS-max-ns     = <70000>;
  64                         tDQSCK-max-derated = <6000>;
  65                 };
  66         };
  67 };