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1=============================
2ARM Microchip SoCs (aka AT91)
3=============================
4
5
6Introduction
7------------
8This document gives useful information about the ARM Microchip SoCs that are
9currently supported in Linux Mainline (you know, the one on kernel.org).
10
11It is important to note that the Microchip (previously Atmel) ARM-based MPU
12product line is historically named "AT91" or "at91" throughout the Linux kernel
13development process even if this product prefix has completely disappeared from
14the official Microchip product name. Anyway, files, directories, git trees,
15git branches/tags and email subject always contain this "at91" sub-string.
16
17
18AT91 SoCs
19---------
20Documentation and detailed datasheet for each product are available on
21the Microchip website: http://www.microchip.com.
22
23 Flavors:
24 * ARM 920 based SoC
25 - at91rm9200
26
27 * Datasheet
28
29 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-1768-32-bit-ARM920T-Embedded-Microprocessor-AT91RM9200_Datasheet.pdf
30
31 * ARM 926 based SoCs
32 - at91sam9260
33
34 * Datasheet
35
36 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-6221-32-bit-ARM926EJ-S-Embedded-Microprocessor-SAM9260_Datasheet.pdf
37
38 - at91sam9xe
39
40 * Datasheet
41
42 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-6254-32-bit-ARM926EJ-S-Embedded-Microprocessor-SAM9XE_Datasheet.pdf
43
44 - at91sam9261
45
46 * Datasheet
47
48 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-6062-ARM926EJ-S-Microprocessor-SAM9261_Datasheet.pdf
49
50 - at91sam9263
51
52 * Datasheet
53
54 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-6249-32-bit-ARM926EJ-S-Embedded-Microprocessor-SAM9263_Datasheet.pdf
55
56 - at91sam9rl
57
58 * Datasheet
59
60 http://ww1.microchip.com/downloads/en/DeviceDoc/doc6289.pdf
61
62 - at91sam9g20
63
64 * Datasheet
65
66 http://ww1.microchip.com/downloads/en/DeviceDoc/DS60001516A.pdf
67
68 - at91sam9g45 family
69 - at91sam9g45
70 - at91sam9g46
71 - at91sam9m10
72 - at91sam9m11 (device superset)
73
74 * Datasheet
75
76 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-6437-32-bit-ARM926-Embedded-Microprocessor-SAM9M11_Datasheet.pdf
77
78 - at91sam9x5 family (aka "The 5 series")
79 - at91sam9g15
80 - at91sam9g25
81 - at91sam9g35
82 - at91sam9x25
83 - at91sam9x35
84
85 * Datasheet (can be considered as covering the whole family)
86
87 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-11055-32-bit-ARM926EJ-S-Microcontroller-SAM9X35_Datasheet.pdf
88
89 - at91sam9n12
90
91 * Datasheet
92
93 http://ww1.microchip.com/downloads/en/DeviceDoc/DS60001517A.pdf
94
95 - sam9x60
96
97 * Datasheet
98
99 http://ww1.microchip.com/downloads/en/DeviceDoc/SAM9X60-Data-Sheet-DS60001579A.pdf
100
101 * ARM Cortex-A5 based SoCs
102 - sama5d3 family
103
104 - sama5d31
105 - sama5d33
106 - sama5d34
107 - sama5d35
108 - sama5d36 (device superset)
109
110 * Datasheet
111
112 http://ww1.microchip.com/downloads/en/DeviceDoc/Atmel-11121-32-bit-Cortex-A5-Microcontroller-SAMA5D3_Datasheet_B.pdf
113
114 * ARM Cortex-A5 + NEON based SoCs
115 - sama5d4 family
116
117 - sama5d41
118 - sama5d42
119 - sama5d43
120 - sama5d44 (device superset)
121
122 * Datasheet
123
124 http://ww1.microchip.com/downloads/en/DeviceDoc/60001525A.pdf
125
126 - sama5d2 family
127
128 - sama5d21
129 - sama5d22
130 - sama5d23
131 - sama5d24
132 - sama5d26
133 - sama5d27 (device superset)
134 - sama5d28 (device superset + environmental monitors)
135
136 * Datasheet
137
138 http://ww1.microchip.com/downloads/en/DeviceDoc/DS60001476B.pdf
139
140 * ARM Cortex-M7 MCUs
141 - sams70 family
142
143 - sams70j19
144 - sams70j20
145 - sams70j21
146 - sams70n19
147 - sams70n20
148 - sams70n21
149 - sams70q19
150 - sams70q20
151 - sams70q21
152
153 - samv70 family
154
155 - samv70j19
156 - samv70j20
157 - samv70n19
158 - samv70n20
159 - samv70q19
160 - samv70q20
161
162 - samv71 family
163
164 - samv71j19
165 - samv71j20
166 - samv71j21
167 - samv71n19
168 - samv71n20
169 - samv71n21
170 - samv71q19
171 - samv71q20
172 - samv71q21
173
174 * Datasheet
175
176 http://ww1.microchip.com/downloads/en/DeviceDoc/SAM-E70-S70-V70-V71-Family-Data-Sheet-DS60001527D.pdf
177
178
179Linux kernel information
180------------------------
181Linux kernel mach directory: arch/arm/mach-at91
182MAINTAINERS entry is: "ARM/Microchip (AT91) SoC support"
183
184
185Device Tree for AT91 SoCs and boards
186------------------------------------
187All AT91 SoCs are converted to Device Tree. Since Linux 3.19, these products
188must use this method to boot the Linux kernel.
189
190Work In Progress statement:
191Device Tree files and Device Tree bindings that apply to AT91 SoCs and boards are
192considered as "Unstable". To be completely clear, any at91 binding can change at
193any time. So, be sure to use a Device Tree Binary and a Kernel Image generated from
194the same source tree.
195Please refer to the Documentation/devicetree/bindings/ABI.rst file for a
196definition of a "Stable" binding/ABI.
197This statement will be removed by AT91 MAINTAINERS when appropriate.
198
199Naming conventions and best practice:
200
201- SoCs Device Tree Source Include files are named after the official name of
202 the product (at91sam9g20.dtsi or sama5d33.dtsi for instance).
203- Device Tree Source Include files (.dtsi) are used to collect common nodes that can be
204 shared across SoCs or boards (sama5d3.dtsi or at91sam9x5cm.dtsi for instance).
205 When collecting nodes for a particular peripheral or topic, the identifier have to
206 be placed at the end of the file name, separated with a "_" (at91sam9x5_can.dtsi
207 or sama5d3_gmac.dtsi for example).
208- board Device Tree Source files (.dts) are prefixed by the string "at91-" so
209 that they can be identified easily. Note that some files are historical exceptions
210 to this rule (sama5d3[13456]ek.dts, usb_a9g20.dts or animeo_ip.dts for example).