1// SPDX-License-Identifier: GPL-2.0 2/* 3 * Timings and Geometry for Samsung K3PE0E000B memory part 4 */ 5 6/ { 7 samsung_K3PE0E000B: lpddr2 { 8 compatible = "Samsung,K3PE0E000B","jedec,lpddr2-s4"; 9 density = <4096>; 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_samsung_K3PE0E000B_533MHz: lpddr2-timings@0 { 25 compatible = "jedec,lpddr2-timings"; 26 min-freq = <10000000>; 27 max-freq = <533333333>; 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_samsung_K3PE0E000B_266MHz: lpddr2-timings@1 { 47 compatible = "jedec,lpddr2-timings"; 48 min-freq = <10000000>; 49 max-freq = <266666666>; 50 tRPab = <21000>; 51 tRCD = <18000>; 52 tWR = <15000>; 53 tRAS-min = <42000>; 54 tRRD = <10000>; 55 tWTR = <7500>; 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}; 69