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author | Wolfram Sang <w.sang@pengutronix.de> | 2010-11-17 13:00:48 +0100 |
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committer | Grant Likely <grant.likely@secretlab.ca> | 2010-12-24 02:13:36 -0700 |
commit | 9ed030d728f3bd03b6e869357da02725afda19a7 (patch) | |
tree | 2dfe452c10e5562a817197d686e7bed61d946fe4 /Documentation/powerpc | |
parent | 194588604765ac803f98fb9d19a36f6b835f4620 (diff) | |
download | linux-9ed030d728f3bd03b6e869357da02725afda19a7.tar.gz linux-9ed030d728f3bd03b6e869357da02725afda19a7.tar.bz2 linux-9ed030d728f3bd03b6e869357da02725afda19a7.zip |
misc/at24: parse device tree data
Information about the pagesize and read-only-status may also come from
the devicetree. Parse this data, too, and act accordingly. While we are
here, change the initialization printout a bit. write_max is useful to
know to detect performance bottlenecks, the rest is superfluous.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
Diffstat (limited to 'Documentation/powerpc')
-rw-r--r-- | Documentation/powerpc/dts-bindings/eeprom.txt | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/Documentation/powerpc/dts-bindings/eeprom.txt b/Documentation/powerpc/dts-bindings/eeprom.txt new file mode 100644 index 000000000000..4342c10de1bf --- /dev/null +++ b/Documentation/powerpc/dts-bindings/eeprom.txt @@ -0,0 +1,28 @@ +EEPROMs (I2C) + +Required properties: + + - compatible : should be "<manufacturer>,<type>" + If there is no specific driver for <manufacturer>, a generic + driver based on <type> is selected. Possible types are: + 24c00, 24c01, 24c02, 24c04, 24c08, 24c16, 24c32, 24c64, + 24c128, 24c256, 24c512, 24c1024, spd + + - reg : the I2C address of the EEPROM + +Optional properties: + + - pagesize : the length of the pagesize for writing. Please consult the + manual of your device, that value varies a lot. A wrong value + may result in data loss! If not specified, a safety value of + '1' is used which will be very slow. + + - read-only: this parameterless property disables writes to the eeprom + +Example: + +eeprom@52 { + compatible = "atmel,24c32"; + reg = <0x52>; + pagesize = <32>; +}; |