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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