FreeCalypso > hg > freecalypso-docs

annotate USB-ID-assignments @ 105:72a272083f46 default tip

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Linux-DTR-RTS-flaw: link to new fc-linux-patch repository
author Mychaela Falconia <falcon@freecalypso.org>
date Mon, 11 Dec 2023 19:02:01 +0000
parents 49be28a15768
children
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
102
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
1 USB PIDs 0x7150 through 0x7157 out of FTDI's VID 0x0403 have been officially
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
2 allocated by FTDI to Falconia Partners LLC for use in our company's hardware
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
3 products based on FTDI chips. The sole authority for further assignment and
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
4 use of these USB IDs rests with Mychaela N. Falconia and no one else.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
5
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
6 Falconia-made vs off-the-shelf hardware
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
7 =======================================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
8
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
9 The common-sense ethical rules imposed by FTDI on the use of USB PIDs allocated
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
10 out of their VID 0x0403 stipulate that these USB IDs may be assigned only to
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
11 board-level products that use FTDI chips. However, in the case of USB PIDs
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
12 allocated by FTDI to Falconia Partners LLC, there is no specific requirement
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
13 that all board-level products using these ID codes must be physically
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
14 manufactured by our company: we can also program these ID codes into FTDI chip
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
15 EEPROMs on various off-the-shelf boards made by parties other than us, as long
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
16 as (1) those off-the-shelf boards feature genuine FTDI-made chips and (2) we as
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
17 in Falconia Partners LLC retain full control and sole deciding authority as to
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
18 which boards we program these ID codes into, when and how.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
19
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
20 As of 2023-07, we have only one board-level product with an FTDI chip that was
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
21 physically manufactured by us: our FreeCalypso DUART28 adapter, produced in
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
22 year 2020. That board has two supported EEPROM configurations, switchable by
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
23 end users, one of which uses an FTDI-Falconia USB ID code. Aside from this
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
24 Falconia-made DUART28, we've been programming FTDI-Falconia USB ID codes into
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
25 some off-the-shelf boards with FTDI chips:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
26
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
27 * In earlier years we made heavy use of generic FT2232D breakout boards made by
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
28 PLDkit OU in Estonia. We are not sure if that original company still makes
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
29 them or not, but the person behind that company name did eventually sell us
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
30 their Gerber files, and we have published them here:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
31
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
32 ftp://ftp.freecalypso.org/pub/USB/FTDI/
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
33
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
34 Given that we have a stash of FT2232D chips and given that we still have use
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
35 cases for these generic breakout boards, we have a tentative plan to produce
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
36 our own Falconia-branded version of the same adapter/breakout board.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
37
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
38 * We are now starting to play with iCE40 FPGA designs using a Lattice iCEstick
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
39 board, and we quickly discovered that instead of programming their FT2232H
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
40 EEPROM with a distinguishing VID:PID code, Lattice left that EEPROM blank.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
41 To fix the problem of Linux kernel creating a bogus ttyUSB device for FT2232H
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
42 Channel A which subsequently disappears when the developer-operator runs
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
43 iceprog, we program the EEPROM ourselves, using one of our FTDI-Falconia PIDs
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
44 that is recognized by mainline Linux (since 2020-09) as a "JTAG quirk" device,
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
45 binding a ttyUSB device only to Channel B.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
46
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
47 Specific hw product vs particular desired treatment from Linux kernel
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
48 =====================================================================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
49
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
50 The original intent being USB VID:PID codes was to assign a different ID code
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
51 to each different physical hardware product. However, when it comes to
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
52 assigning different USB ID codes to various FTDI-based boards where the actual
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
53 chip always stays the same, there is only one reason to program any custom ID
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
54 codes at all: to elicit special treatment from the ftdi_sio driver in the Linux
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
55 kernel. If the EEPROM is omitted, left blank or programmed with the chip-
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
56 default VID:PID code, the ftdi_sio driver will bind a ttyUSB device to every
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
57 channel of a multichannel FT2232x or FT4232H chip; the only reason why anyone
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
58 would wish to program a non-standard USB ID code and (in all cases but one) go
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
59 through the pain of getting that code added to Linux is if this default ftdi_sio
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
60 driver behaviour is undesirable and some different special handling is desired
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
61 or required:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
62
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
63 * Some FTDI-based designs support non-UART functions only and should be ignored
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
64 altogether by the ftdi_sio driver. In these cases, program a USB ID code
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
65 that is not known at all to this Linux kernel driver.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
66
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
67 * In many designs FT2232x Channel A is used for MPSSE (JTAG or SPI), while
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
68 Channel B is used as a UART. In this case the desire is to tell the ftdi_sio
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
69 driver to bind a ttyUSB device only to Channel B, and there is an ever-growing
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
70 list of USB ID codes (typically one or more from each board maker who ran into
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
71 this issue) that are recognized by the ftdi_sio driver as "JTAG quirk"
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
72 devices.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
73
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
74 * In yet other cases some other special quirk other than "skip Channel A for
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
75 JTAG" is desired from the ftdi_sio driver. We have one such use case in
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
76 FreeCalypso: we have dual-UART configurations (FT2232x chip, both channels
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
77 used as UARTs and need ttyUSB devices) in which the ttyUSB device for
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
78 Channel A needs to be fully standard, but the one for Channel B is modified
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
79 with a special quirk - see our Linux-DTR-RTS-flaw article.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
80
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
81 Specific FTDI-Falconia PID assignments
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
82 ======================================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
83
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
84 Our original plan was to assign specific ID codes out of our allocated range to
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
85 specific hw products of our own design and make, following the classic model
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
86 for USB VID:PID assignments. However, upon gaining some years of real-life
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
87 experience, we have switched to a Linux-centric model: we assign USB ID codes
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
88 based not on what physical hw it is, but on what kind of special treatment we
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
89 seek from the ftdi_sio driver in Linux.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
90
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
91 Furthermore and in an unconventional stance, we (Falconia family, doing business
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
92 as Falconia Partners LLC) explicitly allow any member of FOSS & OSHW community,
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
93 without any need to communicate with us, to program some of our FTDI-Falconia
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
94 USB PIDs into their own FTDI-based boards, under one essential condition - any
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
95 non-Falconia party who wishes to use one of our FTDI-Falconia USB PIDs may do
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
96 so if and only if:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
97
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
98 * The specific PID code you wish to reuse is explicitly listed in the present
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
99 document as being eligible for third-party reuse;
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
100
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
101 * The manner in which you use that PID code is exactly as prescribed in this
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
102 document, not any other way.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
103
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
104 VID 0x0403, PIDs 0x7150 and 0x7151
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
105 ==================================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
106
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
107 USB ID codes 0403:7150 and 0403:7151 are recognized by the ftdi_sio driver in
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
108 mainline Linux (since 2020-09) as "JTAG quirk" devices: the driver binds only
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
109 to Channel B and creates only one ttyUSB device. We (Falconia) grant permission
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
110 to anyone in FOSS & OSHW community to reuse either of these two ID codes in
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
111 their own FTDI-based board designs, or in their own personal programming of ID
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
112 EEPROMs on off-the-shelf FTDI-based boards, provided that:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
113
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
114 * The FTDI chip is either FT2232C/D/L or FT2232H, genuine FTDI;
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
115
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
116 * Your intent with respect to handling from the ftdi_sio driver in Linux (or
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
117 its equivalent in other operating systems) is the same as ours: create a
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
118 ttyUSB device for Channel B only, while Channel A remains unbound.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
119
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
120 Choice between 0x7150 and 0x7151
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
121 --------------------------------
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
122
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
123 Our original intent was to use PID 0x7150 for a planned buffered JTAG adapter
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
124 which we ended up never actually making, while 0x7151 was allocated for
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
125 programming into generic FT2232D breakout boards for an unbuffered JTAG adapter
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
126 configuration. As of 2023-07, that previously planned distinction is now
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
127 officially revoked: both PIDs may be used for any FTDI-based board-level gadget
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
128 that needs "JTAG quirk" handling from the ftdi_sio driver.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
129
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
130 When to comes to our own (Falconia/FreeCalypso) usage, our current plan as of
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
131 2023-07 is to use PID 0x7150 for FPGA boards that use FT2232x Channel A for
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
132 FPGA configuration and/or FPGA SPI flash programming, and use PID 0x7151 for
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
133 all JTAG adapters, buffered or unbuffered. However, other FOSS & OSHW community
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
134 members may use either PID, as long as the requirements listed above are met.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
135
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
136 USB ID 0x0403:0x7152
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
137 ====================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
138
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
139 For this FTDI-Falconia PID *NO* outside use permission is currently granted: we
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
140 as in Falconia family, doing business as Falconia Partners LLC, reserve this
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
141 FTDI-allocated PID for use in our own products only. We use this USB ID on
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
142 multiple hardware products, all of which meet the following criteria:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
143
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
144 * The FTDI chip is two-channel FT2232x;
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
145
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
146 * Both channels are wired as UARTs and actually used as such, thus needing two
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
147 ttyUSB devices in Linux;
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
148
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
149 * Channel A is a fully standard UART, no special quirks;
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
150
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
151 * The ttyUSB device for Channel B must be given a special quirk: automatic
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
152 assertion of DTR & RTS upon device open MUST be suppressed, while TIOCMBIS
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
153 and TIOCMBIC ioctls remain available for explicit user control of these two
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
154 signals.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
155
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
156 The original user of this USB ID code is the 'C' configuration of our DUART28
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
157 hardware adapter (thus forming DUART28C); our current plan is to reuse the same
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
158 wiring arrangement and the same USB ID code on our upcoming FC Venus board.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
159
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
160 USB ID 0x0403:0x7153
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
161 ====================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
162
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
163 This USB ID code is explicitly reserved for community use - specifically, for
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
164 anyone who needs the same suppression of DTR & RTS auto-assertion which we've
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
165 implemented for 0x0403:0x7152, but needs it on a single-channel FTDI device, or
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
166 on all channels of a multichannel FTDI chip. We (Falconia) grant permission to
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
167 anyone in FOSS & OSHW community to use this USB ID code in their own FTDI-based
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
168 board designs, or in their own personal programming of ID EEPROMs on off-the-
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
169 shelf FTDI-based boards, provided that:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
170
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
171 * The chip is genuine FTDI;
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
172
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
173 * Your intent with respect to handling from the ftdi_sio driver in Linux (or
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
174 its equivalent in other operating systems) is the same as ours: intentionally
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
175 make this particular ttyUSB device non-POSIX-compliant by NOT automatically
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
176 raising DTR and RTS on open, instead leaving all control over these two
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
177 signals up to userspace via explicit TIOCMBIS and TIOCMBIC ioctls.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
178
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
179 VID 0x0403, PIDs 0x7154 through 0x7156
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
180 ======================================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
181
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
182 These 3 FTDI-Falconia PIDs are currently unassigned. NO permission is granted
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
183 to any outside parties to use any of these unassigned PIDs.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
184
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
185 USB ID 0x0403:0x7157
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
186 ====================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
187
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
188 This USB ID code is reserved for FTDI-based board-level gadgets that are
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
189 entirely non-UART and should be skipped altogether by the ftdi_sio driver.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
190 Examples include, but are not limited to single-channel FT232H used for JTAG or
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
191 other MPSSE applications, FT2232H with both channels wired for MPSSE, or FT2232x
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
192 in MCU host bus emulation mode. We (Falconia) grant permission to anyone in
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
193 FOSS & OSHW community to use this USB ID code in their own FTDI-based board
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
194 designs, or in their own personal programming of ID EEPROMs on off-the-shelf
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
195 FTDI-based boards, provided that:
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
196
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
197 * The chip is genuine FTDI;
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
198
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
199 * Your intent with respect to handling from the ftdi_sio driver in Linux (or
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
200 its equivalent in other operating systems) is the same as ours: have the
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
201 driver ignore this FTDI-based USB device altogether and NOT bind to it.
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
202
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
203 Textual ID strings
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
204 ==================
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
205
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
206 The configuration EEPROM on FTDI chips (internal on FT232R, external on most
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
207 others) allows the higher-level integrator to set not only VID:PID codes, but
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
208 also textual ID strings for manufacturer and product. We (Falconia/FreeCalypso)
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
209 always set meaningful textual ID strings in all of our FTDI EEPROM programming,
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
210 and we encourage others to do likewise. Furthermore, because we have switched
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
211 to using VID:PID codes to indicate what handling we seek from the ftdi_sio
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
212 driver in the Linux kernel, as opposed to identifying more specific hw products
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
213 or designs, it is no longer possible to locate specific device types by looking
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
214 at VID:PID alone. For this reason, our new philosophy is that userspace
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
215 applications that need to locate a specific type of non-UART FTDI device should
49be28a15768 USB-ID-assignments: new official document location
Mychaela Falconia <falcon@freecalypso.org>
parents:
diff changeset
216 match not only by VID:PID, but also by looking for specific product ID strings.