1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-C 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/dma/sterics 4 $id: http://devicetree.org/schemas/dma/stericsson,dma40.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: ST-Ericsson DMA40 DMA Engine 7 title: ST-Ericsson DMA40 DMA Engine
8 8
9 maintainers: 9 maintainers:
10 - Linus Walleij <linus.walleij@linaro.org> 10 - Linus Walleij <linus.walleij@linaro.org>
11 11
12 allOf: 12 allOf:
13 - $ref: dma-controller.yaml# 13 - $ref: dma-controller.yaml#
14 14
15 properties: 15 properties:
16 "#dma-cells": 16 "#dma-cells":
17 const: 3 17 const: 3
18 description: | 18 description: |
19 The first cell is the unique device chan 19 The first cell is the unique device channel number as indicated by this
20 table for DB8500 which is the only ASIC 20 table for DB8500 which is the only ASIC known to use DMA40:
21 21
22 0: SPI controller 0 22 0: SPI controller 0
23 1: SD/MMC controller 0 (unused) 23 1: SD/MMC controller 0 (unused)
24 2: SD/MMC controller 1 (unused) 24 2: SD/MMC controller 1 (unused)
25 3: SD/MMC controller 2 (unused) 25 3: SD/MMC controller 2 (unused)
26 4: I2C port 1 26 4: I2C port 1
27 5: I2C port 3 27 5: I2C port 3
28 6: I2C port 2 28 6: I2C port 2
29 7: I2C port 4 29 7: I2C port 4
30 8: Synchronous Serial Port SSP0 30 8: Synchronous Serial Port SSP0
31 9: Synchronous Serial Port SSP1 31 9: Synchronous Serial Port SSP1
32 10: Multi-Channel Display Engine MCDE RX 32 10: Multi-Channel Display Engine MCDE RX
33 11: UART port 2 33 11: UART port 2
34 12: UART port 1 34 12: UART port 1
35 13: UART port 0 35 13: UART port 0
36 14: Multirate Serial Port MSP2 36 14: Multirate Serial Port MSP2
37 15: I2C port 0 37 15: I2C port 0
38 16: USB OTG in/out endpoints 7 & 15 38 16: USB OTG in/out endpoints 7 & 15
39 17: USB OTG in/out endpoints 6 & 14 39 17: USB OTG in/out endpoints 6 & 14
40 18: USB OTG in/out endpoints 5 & 13 40 18: USB OTG in/out endpoints 5 & 13
41 19: USB OTG in/out endpoints 4 & 12 41 19: USB OTG in/out endpoints 4 & 12
42 20: SLIMbus or HSI channel 0 42 20: SLIMbus or HSI channel 0
43 21: SLIMbus or HSI channel 1 43 21: SLIMbus or HSI channel 1
44 22: SLIMbus or HSI channel 2 44 22: SLIMbus or HSI channel 2
45 23: SLIMbus or HSI channel 3 45 23: SLIMbus or HSI channel 3
46 24: Multimedia DSP SXA0 46 24: Multimedia DSP SXA0
47 25: Multimedia DSP SXA1 47 25: Multimedia DSP SXA1
48 26: Multimedia DSP SXA2 48 26: Multimedia DSP SXA2
49 27: Multimedia DSP SXA3 49 27: Multimedia DSP SXA3
50 28: SD/MMC controller 2 50 28: SD/MMC controller 2
51 29: SD/MMC controller 0 51 29: SD/MMC controller 0
52 30: MSP port 1 on DB8500 v1, MSP port 3 52 30: MSP port 1 on DB8500 v1, MSP port 3 on DB8500 v2
53 31: MSP port 0 or SLIMbus channel 0 53 31: MSP port 0 or SLIMbus channel 0
54 32: SD/MMC controller 1 54 32: SD/MMC controller 1
55 33: SPI controller 2 55 33: SPI controller 2
56 34: i2c3 RX2 TX2 56 34: i2c3 RX2 TX2
57 35: SPI controller 1 57 35: SPI controller 1
58 36: USB OTG in/out endpoints 3 & 11 58 36: USB OTG in/out endpoints 3 & 11
59 37: USB OTG in/out endpoints 2 & 10 59 37: USB OTG in/out endpoints 2 & 10
60 38: USB OTG in/out endpoints 1 & 9 60 38: USB OTG in/out endpoints 1 & 9
61 39: USB OTG in/out endpoints 8 61 39: USB OTG in/out endpoints 8
62 40: SPI controller 3 62 40: SPI controller 3
63 41: SD/MMC controller 3 63 41: SD/MMC controller 3
64 42: SD/MMC controller 4 64 42: SD/MMC controller 4
65 43: SD/MMC controller 5 65 43: SD/MMC controller 5
66 44: Multimedia DSP SXA4 66 44: Multimedia DSP SXA4
67 45: Multimedia DSP SXA5 67 45: Multimedia DSP SXA5
68 46: SLIMbus channel 8 or Multimedia DSP 68 46: SLIMbus channel 8 or Multimedia DSP SXA6
69 47: SLIMbus channel 9 or Multimedia DSP 69 47: SLIMbus channel 9 or Multimedia DSP SXA7
70 48: Crypto Accelerator 1 70 48: Crypto Accelerator 1
71 49: Crypto Accelerator 1 TX or Hash Acce 71 49: Crypto Accelerator 1 TX or Hash Accelerator 1 TX
72 50: Hash Accelerator 1 TX 72 50: Hash Accelerator 1 TX
73 51: memcpy TX (to be used by the DMA dri 73 51: memcpy TX (to be used by the DMA driver for memcpy operations)
74 52: SLIMbus or HSI channel 4 74 52: SLIMbus or HSI channel 4
75 53: SLIMbus or HSI channel 5 75 53: SLIMbus or HSI channel 5
76 54: SLIMbus or HSI channel 6 76 54: SLIMbus or HSI channel 6
77 55: SLIMbus or HSI channel 7 77 55: SLIMbus or HSI channel 7
78 56: memcpy (to be used by the DMA driver 78 56: memcpy (to be used by the DMA driver for memcpy operations)
79 57: memcpy (to be used by the DMA driver 79 57: memcpy (to be used by the DMA driver for memcpy operations)
80 58: memcpy (to be used by the DMA driver 80 58: memcpy (to be used by the DMA driver for memcpy operations)
81 59: memcpy (to be used by the DMA driver 81 59: memcpy (to be used by the DMA driver for memcpy operations)
82 60: memcpy (to be used by the DMA driver 82 60: memcpy (to be used by the DMA driver for memcpy operations)
83 61: Crypto Accelerator 0 83 61: Crypto Accelerator 0
84 62: Crypto Accelerator 0 TX or Hash Acce 84 62: Crypto Accelerator 0 TX or Hash Accelerator 0 TX
85 63: Hash Accelerator 0 TX 85 63: Hash Accelerator 0 TX
86 86
87 The second cell is the DMA request line 87 The second cell is the DMA request line number. This is only used when
88 a fixed channel is allocated, and indica 88 a fixed channel is allocated, and indicated by setting bit 3 in the
89 flags field (see below). 89 flags field (see below).
90 90
91 The third cell is a 32bit flags bitfield 91 The third cell is a 32bit flags bitfield with the following possible
92 bits set: 92 bits set:
93 0x00000001 (bit 0) - mode: 93 0x00000001 (bit 0) - mode:
94 Logical channel when unset 94 Logical channel when unset
95 Physical channel when set 95 Physical channel when set
96 0x00000002 (bit 1) - direction: 96 0x00000002 (bit 1) - direction:
97 Memory to Device when unset 97 Memory to Device when unset
98 Device to Memory when set 98 Device to Memory when set
99 0x00000004 (bit 2) - endianness: 99 0x00000004 (bit 2) - endianness:
100 Little endian when unset 100 Little endian when unset
101 Big endian when set 101 Big endian when set
102 0x00000008 (bit 3) - use fixed channel: 102 0x00000008 (bit 3) - use fixed channel:
103 Use automatic channel selection when u 103 Use automatic channel selection when unset
104 Use DMA request line number when set 104 Use DMA request line number when set
105 0x00000010 (bit 4) - set channel as high 105 0x00000010 (bit 4) - set channel as high priority:
106 Normal priority when unset 106 Normal priority when unset
107 High priority when set 107 High priority when set
108 108
109 compatible: 109 compatible:
110 items: 110 items:
111 - const: stericsson,db8500-dma40 111 - const: stericsson,db8500-dma40
112 - const: stericsson,dma40 112 - const: stericsson,dma40
113 113
114 reg: 114 reg:
115 oneOf: !! 115 items:
116 - items: !! 116 - description: DMA40 memory base
117 - description: DMA40 memory base !! 117 - description: LCPA memory base
118 - items: <<
119 - description: DMA40 memory base <<
120 - description: LCPA memory base, dep <<
121 deprecated: true <<
122 <<
123 118
124 reg-names: 119 reg-names:
125 oneOf: !! 120 items:
126 - items: !! 121 - const: base
127 - const: base !! 122 - const: lcpa
128 - items: <<
129 - const: base <<
130 - const: lcpa <<
131 deprecated: true <<
132 123
133 interrupts: 124 interrupts:
134 maxItems: 1 125 maxItems: 1
135 126
136 clocks: 127 clocks:
137 maxItems: 1 128 maxItems: 1
138 129
139 sram: <<
140 $ref: /schemas/types.yaml#/definitions/pha <<
141 description: A phandle array with inner si <<
142 First phandle is the LCPA (Logical Chann <<
143 Second phandle is the LCLA (Logical Cha <<
144 maxItems: 2 <<
145 items: <<
146 maxItems: 1 <<
147 <<
148 memcpy-channels: 130 memcpy-channels:
149 $ref: /schemas/types.yaml#/definitions/uin 131 $ref: /schemas/types.yaml#/definitions/uint32-array
150 description: Array of u32 elements indicat 132 description: Array of u32 elements indicating which channels on the DMA
151 engine are eligible for memcpy transfers !! 133 engine are elegible for memcpy transfers
152 134
153 required: 135 required:
154 - "#dma-cells" 136 - "#dma-cells"
155 - compatible 137 - compatible
156 - reg 138 - reg
157 - interrupts 139 - interrupts
158 - clocks 140 - clocks
159 - sram <<
160 - memcpy-channels 141 - memcpy-channels
161 142
162 additionalProperties: false 143 additionalProperties: false
163 144
164 examples: 145 examples:
165 - | 146 - |
166 #include <dt-bindings/interrupt-controller 147 #include <dt-bindings/interrupt-controller/irq.h>
167 #include <dt-bindings/interrupt-controller 148 #include <dt-bindings/interrupt-controller/arm-gic.h>
168 #include <dt-bindings/mfd/dbx500-prcmu.h> 149 #include <dt-bindings/mfd/dbx500-prcmu.h>
169 dma-controller@801c0000 { 150 dma-controller@801c0000 {
170 compatible = "stericsson,db8500-dma40" 151 compatible = "stericsson,db8500-dma40", "stericsson,dma40";
171 reg = <0x801c0000 0x1000>; !! 152 reg = <0x801c0000 0x1000>, <0x40010000 0x800>;
172 reg-names = "base"; !! 153 reg-names = "base", "lcpa";
173 sram = <&lcpa>, <&lcla>; <<
174 interrupts = <GIC_SPI 25 IRQ_TYPE_LEVE 154 interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
175 #dma-cells = <3>; 155 #dma-cells = <3>;
176 memcpy-channels = <56 57 58 59 60>; 156 memcpy-channels = <56 57 58 59 60>;
177 clocks = <&prcmu_clk PRCMU_DMACLK>; 157 clocks = <&prcmu_clk PRCMU_DMACLK>;
178 }; 158 };
179 ... 159 ...
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