128f81858SKrzysztof Kozlowski# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) 228f81858SKrzysztof Kozlowski%YAML 1.2 328f81858SKrzysztof Kozlowski--- 428f81858SKrzysztof Kozlowski$id: http://devicetree.org/schemas/memory-controllers/ddr/jedec,lpddr3.yaml# 528f81858SKrzysztof Kozlowski$schema: http://devicetree.org/meta-schemas/core.yaml# 628f81858SKrzysztof Kozlowski 728f81858SKrzysztof Kozlowskititle: LPDDR3 SDRAM compliant to JEDEC JESD209-3 828f81858SKrzysztof Kozlowski 928f81858SKrzysztof Kozlowskimaintainers: 1028f81858SKrzysztof Kozlowski - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> 1128f81858SKrzysztof Kozlowski 1228f81858SKrzysztof Kozlowskiproperties: 1328f81858SKrzysztof Kozlowski compatible: 1428f81858SKrzysztof Kozlowski items: 1528f81858SKrzysztof Kozlowski - enum: 1628f81858SKrzysztof Kozlowski - samsung,K3QF2F20DB 1728f81858SKrzysztof Kozlowski - const: jedec,lpddr3 1828f81858SKrzysztof Kozlowski 1928f81858SKrzysztof Kozlowski '#address-cells': 2028f81858SKrzysztof Kozlowski const: 1 2128f81858SKrzysztof Kozlowski 2228f81858SKrzysztof Kozlowski density: 2328f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 2428f81858SKrzysztof Kozlowski description: | 2528f81858SKrzysztof Kozlowski Density in megabits of SDRAM chip. 2628f81858SKrzysztof Kozlowski enum: 2728f81858SKrzysztof Kozlowski - 4096 2828f81858SKrzysztof Kozlowski - 8192 2928f81858SKrzysztof Kozlowski - 16384 3028f81858SKrzysztof Kozlowski - 32768 3128f81858SKrzysztof Kozlowski 3228f81858SKrzysztof Kozlowski io-width: 3328f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 3428f81858SKrzysztof Kozlowski description: | 3528f81858SKrzysztof Kozlowski IO bus width in bits of SDRAM chip. 3628f81858SKrzysztof Kozlowski enum: 3728f81858SKrzysztof Kozlowski - 32 3828f81858SKrzysztof Kozlowski - 16 3928f81858SKrzysztof Kozlowski 4028f81858SKrzysztof Kozlowski manufacturer-id: 4128f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 4228f81858SKrzysztof Kozlowski description: | 43*e531932cSKrzysztof Kozlowski Manufacturer ID value read from Mode Register 5. The property is 44*e531932cSKrzysztof Kozlowski deprecated, manufacturer should be derived from the compatible. 45*e531932cSKrzysztof Kozlowski deprecated: true 4628f81858SKrzysztof Kozlowski 4728f81858SKrzysztof Kozlowski revision-id: 4828f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32-array 4928f81858SKrzysztof Kozlowski minItems: 2 5028f81858SKrzysztof Kozlowski maxItems: 2 5128f81858SKrzysztof Kozlowski items: 5228f81858SKrzysztof Kozlowski maximum: 255 5328f81858SKrzysztof Kozlowski description: | 5428f81858SKrzysztof Kozlowski Revision value of SDRAM chip read from Mode Registers 6 and 7. 5528f81858SKrzysztof Kozlowski 5628f81858SKrzysztof Kozlowski '#size-cells': 5728f81858SKrzysztof Kozlowski const: 0 5828f81858SKrzysztof Kozlowski 5928f81858SKrzysztof Kozlowski tCKE-min-tck: 6028f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 6128f81858SKrzysztof Kozlowski maximum: 15 6228f81858SKrzysztof Kozlowski description: | 6328f81858SKrzysztof Kozlowski CKE minimum pulse width (HIGH and LOW pulse width) in terms of number 6428f81858SKrzysztof Kozlowski of clock cycles. 6528f81858SKrzysztof Kozlowski 6628f81858SKrzysztof Kozlowski tCKESR-min-tck: 6728f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 6828f81858SKrzysztof Kozlowski maximum: 15 6928f81858SKrzysztof Kozlowski description: | 7028f81858SKrzysztof Kozlowski CKE minimum pulse width during SELF REFRESH (low pulse width during 7128f81858SKrzysztof Kozlowski SELF REFRESH) in terms of number of clock cycles. 7228f81858SKrzysztof Kozlowski 7328f81858SKrzysztof Kozlowski tDQSCK-min-tck: 7428f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 7528f81858SKrzysztof Kozlowski maximum: 15 7628f81858SKrzysztof Kozlowski description: | 7728f81858SKrzysztof Kozlowski DQS output data access time from CK_t/CK_c in terms of number of clock 7828f81858SKrzysztof Kozlowski cycles. 7928f81858SKrzysztof Kozlowski 8028f81858SKrzysztof Kozlowski tFAW-min-tck: 8128f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 8228f81858SKrzysztof Kozlowski maximum: 63 8328f81858SKrzysztof Kozlowski description: | 8428f81858SKrzysztof Kozlowski Four-bank activate window in terms of number of clock cycles. 8528f81858SKrzysztof Kozlowski 8628f81858SKrzysztof Kozlowski tMRD-min-tck: 8728f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 8828f81858SKrzysztof Kozlowski maximum: 15 8928f81858SKrzysztof Kozlowski description: | 9028f81858SKrzysztof Kozlowski Mode register set command delay in terms of number of clock cycles. 9128f81858SKrzysztof Kozlowski 9228f81858SKrzysztof Kozlowski tR2R-C2C-min-tck: 9328f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 9428f81858SKrzysztof Kozlowski enum: [0, 1] 9528f81858SKrzysztof Kozlowski description: | 9628f81858SKrzysztof Kozlowski Additional READ-to-READ delay in chip-to-chip cases in terms of number 9728f81858SKrzysztof Kozlowski of clock cycles. 9828f81858SKrzysztof Kozlowski 9928f81858SKrzysztof Kozlowski tRAS-min-tck: 10028f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 10128f81858SKrzysztof Kozlowski maximum: 63 10228f81858SKrzysztof Kozlowski description: | 10328f81858SKrzysztof Kozlowski Row active time in terms of number of clock cycles. 10428f81858SKrzysztof Kozlowski 10528f81858SKrzysztof Kozlowski tRC-min-tck: 10628f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 10728f81858SKrzysztof Kozlowski maximum: 63 10828f81858SKrzysztof Kozlowski description: | 10928f81858SKrzysztof Kozlowski ACTIVATE-to-ACTIVATE command period in terms of number of clock cycles. 11028f81858SKrzysztof Kozlowski 11128f81858SKrzysztof Kozlowski tRCD-min-tck: 11228f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 11328f81858SKrzysztof Kozlowski maximum: 15 11428f81858SKrzysztof Kozlowski description: | 11528f81858SKrzysztof Kozlowski RAS-to-CAS delay in terms of number of clock cycles. 11628f81858SKrzysztof Kozlowski 11728f81858SKrzysztof Kozlowski tRFC-min-tck: 11828f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 11928f81858SKrzysztof Kozlowski maximum: 255 12028f81858SKrzysztof Kozlowski description: | 12128f81858SKrzysztof Kozlowski Refresh Cycle time in terms of number of clock cycles. 12228f81858SKrzysztof Kozlowski 12328f81858SKrzysztof Kozlowski tRL-min-tck: 12428f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 12528f81858SKrzysztof Kozlowski maximum: 15 12628f81858SKrzysztof Kozlowski description: | 12728f81858SKrzysztof Kozlowski READ data latency in terms of number of clock cycles. 12828f81858SKrzysztof Kozlowski 12928f81858SKrzysztof Kozlowski tRPab-min-tck: 13028f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 13128f81858SKrzysztof Kozlowski maximum: 15 13228f81858SKrzysztof Kozlowski description: | 13328f81858SKrzysztof Kozlowski Row precharge time (all banks) in terms of number of clock cycles. 13428f81858SKrzysztof Kozlowski 13528f81858SKrzysztof Kozlowski tRPpb-min-tck: 13628f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 13728f81858SKrzysztof Kozlowski maximum: 15 13828f81858SKrzysztof Kozlowski description: | 13928f81858SKrzysztof Kozlowski Row precharge time (single banks) in terms of number of clock cycles. 14028f81858SKrzysztof Kozlowski 14128f81858SKrzysztof Kozlowski tRRD-min-tck: 14228f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 14328f81858SKrzysztof Kozlowski maximum: 15 14428f81858SKrzysztof Kozlowski description: | 14528f81858SKrzysztof Kozlowski Active bank A to active bank B in terms of number of clock cycles. 14628f81858SKrzysztof Kozlowski 14728f81858SKrzysztof Kozlowski tRTP-min-tck: 14828f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 14928f81858SKrzysztof Kozlowski maximum: 15 15028f81858SKrzysztof Kozlowski description: | 15128f81858SKrzysztof Kozlowski Internal READ to PRECHARGE command delay in terms of number of clock 15228f81858SKrzysztof Kozlowski cycles. 15328f81858SKrzysztof Kozlowski 15428f81858SKrzysztof Kozlowski tW2W-C2C-min-tck: 15528f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 15628f81858SKrzysztof Kozlowski enum: [0, 1] 15728f81858SKrzysztof Kozlowski description: | 15828f81858SKrzysztof Kozlowski Additional WRITE-to-WRITE delay in chip-to-chip cases in terms of number 15928f81858SKrzysztof Kozlowski of clock cycles. 16028f81858SKrzysztof Kozlowski 16128f81858SKrzysztof Kozlowski tWL-min-tck: 16228f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 16328f81858SKrzysztof Kozlowski maximum: 15 16428f81858SKrzysztof Kozlowski description: | 16528f81858SKrzysztof Kozlowski WRITE data latency in terms of number of clock cycles. 16628f81858SKrzysztof Kozlowski 16728f81858SKrzysztof Kozlowski tWR-min-tck: 16828f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 16928f81858SKrzysztof Kozlowski maximum: 15 17028f81858SKrzysztof Kozlowski description: | 17128f81858SKrzysztof Kozlowski WRITE recovery time in terms of number of clock cycles. 17228f81858SKrzysztof Kozlowski 17328f81858SKrzysztof Kozlowski tWTR-min-tck: 17428f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 17528f81858SKrzysztof Kozlowski maximum: 15 17628f81858SKrzysztof Kozlowski description: | 17728f81858SKrzysztof Kozlowski Internal WRITE-to-READ command delay in terms of number of clock cycles. 17828f81858SKrzysztof Kozlowski 17928f81858SKrzysztof Kozlowski tXP-min-tck: 18028f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 18128f81858SKrzysztof Kozlowski maximum: 255 18228f81858SKrzysztof Kozlowski description: | 18328f81858SKrzysztof Kozlowski Exit power-down to next valid command delay in terms of number of clock 18428f81858SKrzysztof Kozlowski cycles. 18528f81858SKrzysztof Kozlowski 18628f81858SKrzysztof Kozlowski tXSR-min-tck: 18728f81858SKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 18828f81858SKrzysztof Kozlowski maximum: 1023 18928f81858SKrzysztof Kozlowski description: | 19028f81858SKrzysztof Kozlowski SELF REFRESH exit to next valid command delay in terms of number of clock 19128f81858SKrzysztof Kozlowski cycles. 19228f81858SKrzysztof Kozlowski 19328f81858SKrzysztof KozlowskipatternProperties: 19428f81858SKrzysztof Kozlowski "^timings@[0-9a-f]+$": 19528f81858SKrzysztof Kozlowski $ref: jedec,lpddr3-timings.yaml 19628f81858SKrzysztof Kozlowski description: | 19728f81858SKrzysztof Kozlowski The lpddr3 node may have one or more child nodes with timings. 19828f81858SKrzysztof Kozlowski Each timing node provides AC timing parameters of the device for a given 19928f81858SKrzysztof Kozlowski speed-bin. The user may provide the timings for as many speed-bins as is 20028f81858SKrzysztof Kozlowski required. 20128f81858SKrzysztof Kozlowski 20228f81858SKrzysztof Kozlowskirequired: 20328f81858SKrzysztof Kozlowski - compatible 20428f81858SKrzysztof Kozlowski - '#address-cells' 20528f81858SKrzysztof Kozlowski - density 20628f81858SKrzysztof Kozlowski - io-width 20728f81858SKrzysztof Kozlowski - '#size-cells' 20828f81858SKrzysztof Kozlowski 20928f81858SKrzysztof KozlowskiadditionalProperties: false 21028f81858SKrzysztof Kozlowski 21128f81858SKrzysztof Kozlowskiexamples: 21228f81858SKrzysztof Kozlowski - | 21328f81858SKrzysztof Kozlowski lpddr3 { 21428f81858SKrzysztof Kozlowski compatible = "samsung,K3QF2F20DB", "jedec,lpddr3"; 21528f81858SKrzysztof Kozlowski density = <16384>; 21628f81858SKrzysztof Kozlowski io-width = <32>; 21728f81858SKrzysztof Kozlowski #address-cells = <1>; 21828f81858SKrzysztof Kozlowski #size-cells = <0>; 21928f81858SKrzysztof Kozlowski 22028f81858SKrzysztof Kozlowski tCKE-min-tck = <2>; 22128f81858SKrzysztof Kozlowski tCKESR-min-tck = <2>; 22228f81858SKrzysztof Kozlowski tDQSCK-min-tck = <5>; 22328f81858SKrzysztof Kozlowski tFAW-min-tck = <5>; 22428f81858SKrzysztof Kozlowski tMRD-min-tck = <5>; 22528f81858SKrzysztof Kozlowski tR2R-C2C-min-tck = <0>; 22628f81858SKrzysztof Kozlowski tRAS-min-tck = <5>; 22728f81858SKrzysztof Kozlowski tRC-min-tck = <6>; 22828f81858SKrzysztof Kozlowski tRCD-min-tck = <3>; 22928f81858SKrzysztof Kozlowski tRFC-min-tck = <17>; 23028f81858SKrzysztof Kozlowski tRL-min-tck = <14>; 23128f81858SKrzysztof Kozlowski tRPab-min-tck = <2>; 23228f81858SKrzysztof Kozlowski tRPpb-min-tck = <2>; 23328f81858SKrzysztof Kozlowski tRRD-min-tck = <2>; 23428f81858SKrzysztof Kozlowski tRTP-min-tck = <2>; 23528f81858SKrzysztof Kozlowski tW2W-C2C-min-tck = <0>; 23628f81858SKrzysztof Kozlowski tWL-min-tck = <8>; 23728f81858SKrzysztof Kozlowski tWR-min-tck = <7>; 23828f81858SKrzysztof Kozlowski tWTR-min-tck = <2>; 23928f81858SKrzysztof Kozlowski tXP-min-tck = <2>; 24028f81858SKrzysztof Kozlowski tXSR-min-tck = <12>; 24128f81858SKrzysztof Kozlowski 24228f81858SKrzysztof Kozlowski timings@800000000 { 24328f81858SKrzysztof Kozlowski compatible = "jedec,lpddr3-timings"; 24428f81858SKrzysztof Kozlowski reg = <800000000>; 24528f81858SKrzysztof Kozlowski min-freq = <100000000>; 24628f81858SKrzysztof Kozlowski tCKE = <3750>; 24728f81858SKrzysztof Kozlowski tCKESR = <3750>; 24828f81858SKrzysztof Kozlowski tFAW = <25000>; 24928f81858SKrzysztof Kozlowski tMRD = <7000>; 25028f81858SKrzysztof Kozlowski tR2R-C2C = <0>; 25128f81858SKrzysztof Kozlowski tRAS = <23000>; 25228f81858SKrzysztof Kozlowski tRC = <33750>; 25328f81858SKrzysztof Kozlowski tRCD = <10000>; 25428f81858SKrzysztof Kozlowski tRFC = <65000>; 25528f81858SKrzysztof Kozlowski tRPab = <12000>; 25628f81858SKrzysztof Kozlowski tRPpb = <12000>; 25728f81858SKrzysztof Kozlowski tRRD = <6000>; 25828f81858SKrzysztof Kozlowski tRTP = <3750>; 25928f81858SKrzysztof Kozlowski tW2W-C2C = <0>; 26028f81858SKrzysztof Kozlowski tWR = <7500>; 26128f81858SKrzysztof Kozlowski tWTR = <3750>; 26228f81858SKrzysztof Kozlowski tXP = <3750>; 26328f81858SKrzysztof Kozlowski tXSR = <70000>; 26428f81858SKrzysztof Kozlowski }; 26528f81858SKrzysztof Kozlowski }; 266