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Diffstat (limited to 'Documentation/w1/slaves/w1_ds28e04')
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diff --git a/Documentation/w1/slaves/w1_ds28e04 b/Documentation/w1/slaves/w1_ds28e04 deleted file mode 100644 index 85bc9a7e02f..00000000000 --- a/Documentation/w1/slaves/w1_ds28e04 +++ /dev/null | |||
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1 | Kernel driver w1_ds28e04 | ||
2 | ======================== | ||
3 | |||
4 | Supported chips: | ||
5 | * Maxim DS28E04-100 4096-Bit Addressable 1-Wire EEPROM with PIO | ||
6 | |||
7 | supported family codes: | ||
8 | W1_FAMILY_DS28E04 0x1C | ||
9 | |||
10 | Author: Markus Franke, <franke.m@sebakmt.com> <franm@hrz.tu-chemnitz.de> | ||
11 | |||
12 | Description | ||
13 | ----------- | ||
14 | |||
15 | Support is provided through the sysfs files "eeprom" and "pio". CRC checking | ||
16 | during memory accesses can optionally be enabled/disabled via the device | ||
17 | attribute "crccheck". The strong pull-up can optionally be enabled/disabled | ||
18 | via the module parameter "w1_strong_pullup". | ||
19 | |||
20 | Memory Access | ||
21 | |||
22 | A read operation on the "eeprom" file reads the given amount of bytes | ||
23 | from the EEPROM of the DS28E04. | ||
24 | |||
25 | A write operation on the "eeprom" file writes the given byte sequence | ||
26 | to the EEPROM of the DS28E04. If CRC checking mode is enabled only | ||
27 | fully alligned blocks of 32 bytes with valid CRC16 values (in bytes 30 | ||
28 | and 31) are allowed to be written. | ||
29 | |||
30 | PIO Access | ||
31 | |||
32 | The 2 PIOs of the DS28E04-100 are accessible via the "pio" sysfs file. | ||
33 | |||
34 | The current status of the PIO's is returned as an 8 bit value. Bit 0/1 | ||
35 | represent the state of PIO_0/PIO_1. Bits 2..7 do not care. The PIO's are | ||
36 | driven low-active, i.e. the driver delivers/expects low-active values. | ||