xref: /linux/Documentation/devicetree/bindings/memory-controllers/snps,dw-umctl2-ddrc.yaml (revision c532de5a67a70f8533d495f8f2aaa9a0491c3ad0) 
1# SPDX-License-Identifier: GPL-2.0-only
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/memory-controllers/snps,dw-umctl2-ddrc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Synopsys DesignWare Universal Multi-Protocol Memory Controller
8
9maintainers:
10  - Krzysztof Kozlowski <krzk@kernel.org>
11  - Michal Simek <michal.simek@amd.com>
12
13description: |
14  Synopsys DesignWare Enhanced uMCTL2 DDR Memory Controller is capable of
15  working with the memory devices supporting up to (LP)DDR4 protocol. It can
16  be equipped with SEC/DEC ECC feature if DRAM data bus width is either
17  16-bits or 32-bits or 64-bits wide.
18
19  For instance the ZynqMP DDR controller is based on the DW uMCTL2 v2.40a
20  controller. It has an optional SEC/DEC ECC support in 64- and 32-bits
21  bus width configurations.
22
23properties:
24  compatible:
25    oneOf:
26      - deprecated: true
27        description: Synopsys DW uMCTL2 DDR controller v3.80a
28        const: snps,ddrc-3.80a
29      - description: Synopsys DW uMCTL2 DDR controller
30        const: snps,dw-umctl2-ddrc
31      - description: Xilinx ZynqMP DDR controller v2.40a
32        const: xlnx,zynqmp-ddrc-2.40a
33
34  interrupts:
35    description:
36      DW uMCTL2 DDRC IP-core provides individual IRQ signal for each event":"
37      ECC Corrected Error, ECC Uncorrected Error, ECC Address Protection,
38      Scrubber-Done signal, DFI Parity/CRC Error. Some platforms may have the
39      signals merged before they reach the IRQ controller or have some of them
40      absent in case if the corresponding feature is unavailable/disabled.
41    minItems: 1
42    maxItems: 5
43
44  interrupt-names:
45    minItems: 1
46    maxItems: 5
47    oneOf:
48      - description: Common ECC CE/UE/Scrubber/DFI Errors IRQ
49        items:
50          - const: ecc
51      - description: Individual ECC CE/UE/Scrubber/DFI Errors IRQs
52        items:
53          enum: [ ecc_ce, ecc_ue, ecc_ap, ecc_sbr, dfi_e ]
54
55  reg:
56    maxItems: 1
57
58  clocks:
59    description:
60      A standard set of the clock sources contains CSRs bus clock, AXI-ports
61      reference clock, DDRC core clock, Scrubber standalone clock
62      (synchronous to the DDRC clock).
63    minItems: 1
64    maxItems: 4
65
66  clock-names:
67    minItems: 1
68    maxItems: 4
69    items:
70      enum: [ pclk, aclk, core, sbr ]
71
72  resets:
73    description:
74      Each clock domain can have separate reset signal.
75    minItems: 1
76    maxItems: 4
77
78  reset-names:
79    minItems: 1
80    maxItems: 4
81    items:
82      enum: [ prst, arst, core, sbr ]
83
84required:
85  - compatible
86  - reg
87  - interrupts
88
89additionalProperties: false
90
91examples:
92  - |
93    #include <dt-bindings/interrupt-controller/arm-gic.h>
94
95    memory-controller@fd070000 {
96      compatible = "xlnx,zynqmp-ddrc-2.40a";
97      reg = <0xfd070000 0x30000>;
98
99      interrupt-parent = <&gic>;
100      interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
101      interrupt-names = "ecc";
102    };
103  - |
104    #include <dt-bindings/interrupt-controller/irq.h>
105
106    memory-controller@3d400000 {
107      compatible = "snps,dw-umctl2-ddrc";
108      reg = <0x3d400000 0x400000>;
109
110      interrupts = <147 IRQ_TYPE_LEVEL_HIGH>, <148 IRQ_TYPE_LEVEL_HIGH>,
111                   <149 IRQ_TYPE_LEVEL_HIGH>, <150 IRQ_TYPE_LEVEL_HIGH>;
112      interrupt-names = "ecc_ce", "ecc_ue", "ecc_sbr", "dfi_e";
113
114      clocks = <&pclk>, <&aclk>, <&core_clk>, <&sbr_clk>;
115      clock-names = "pclk", "aclk", "core", "sbr";
116    };
117...
118