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lpddr2-timings.txt
(1.17 KB)
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lpddr2.txt
(2.52 KB)
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lpddr3-timings.txt
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lpddr3.txt
(2.38 KB)
Editing: lpddr3-timings.txt
* AC timing parameters of LPDDR3 memories for a given speed-bin. The structures are based on LPDDR2 and extended where needed. Required properties: - compatible : Should be "jedec,lpddr3-timings" - min-freq : minimum DDR clock frequency for the speed-bin. Type is <u32> - reg : maximum DDR clock frequency for the speed-bin. Type is <u32> Optional properties: The following properties represent AC timing parameters from the memory data-sheet of the device for a given speed-bin. All these properties are of type <u32> and the default unit is ps (pico seconds). - tRFC - tRRD - tRPab - tRPpb - tRCD - tRC - tRAS - tWTR - tWR - tRTP - tW2W-C2C - tR2R-C2C - tFAW - tXSR - tXP - tCKE - tCKESR - tMRD Example: timings_samsung_K3QF2F20DB_800mhz: lpddr3-timings@800000000 { compatible = "jedec,lpddr3-timings"; reg = <800000000>; /* workaround: it shows max-freq */ min-freq = <100000000>; tRFC = <65000>; tRRD = <6000>; tRPab = <12000>; tRPpb = <12000>; tRCD = <10000>; tRC = <33750>; tRAS = <23000>; tWTR = <3750>; tWR = <7500>; tRTP = <3750>; tW2W-C2C = <0>; tR2R-C2C = <0>; tFAW = <25000>; tXSR = <70000>; tXP = <3750>; tCKE = <3750>; tCKESR = <3750>; tMRD = <7000>; };
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