1 ========================================
2 Kernel driver for omap HDQ/1-wire module
3 ========================================
4
5 Supported chips:
6 ================
7 HDQ/1-wire controller on the TI OMAP 2430/3430
8
9 A useful link about HDQ basics:
10 ===============================
11 http://focus.ti.com/lit/an/slua408a/slua408a.p
12
13 Description:
14 ============
15 The HDQ/1-Wire module of TI OMAP2430/3430 plat
16 protocol of the master functions of the Benchm
17 Semiconductor 1-Wire protocols. These protocol
18 communication between the master (HDQ/1-Wire c
19 (HDQ/1-Wire external compliant device).
20
21 A typical application of the HDQ/1-Wire module
22 monitor (gas gauge) integrated circuits.
23
24 The controller supports operation in both HDQ
25 difference between the HDQ and 1-wire mode is
26 initialization pulse.In HDQ mode, the firmware
27 create an initialization pulse to the slave.Ho
28 using an initialization pulse (also referred t
29 does not respond with a presence pulse as it d
30
31 Remarks:
32 ========
33 The driver (drivers/w1/masters/omap_hdq.c) sup
34 controller. In this mode, as we can not read t
35 spec(family:id:crc), a module parameter can be
36 be used to calculate the CRC and pass back an
37 core.
38
39 By default the master driver and the BQ slave
40 driver(drivers/w1/slaves/w1_bq27000.c) sets th
41 Please note to load both the modules with a di
42 that the ID used should be same for both maste
43
44 e.g::
45
46 insmod omap_hdq.ko W1_ID=2
47 insmod w1_bq27000.ko F_ID=2
48
49 The driver also supports 1-wire mode. In this
50 pass slave ID as parameter. The driver will au
51 to the bus using SEARCH_ROM procedure. 1-wire
52 setting "ti,mode" property to "1w" in DT (see
53 Documentation/devicetree/bindings/w1/omap-hdq.
54 By default driver is in HDQ mode.
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.