dt-bindings: at24: consistently document the compatible property
Current description of the compatible property for at24 is quite vague. State explicitly that any "<manufacturer>,<model>" pair is accepted as long as a correct fallback is used for non-atmel chips. Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl> Reviewed-by: Rob Herring <robh@kernel.org>
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@ -2,28 +2,42 @@ EEPROMs (I2C)
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Required properties:
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- compatible : should be "<manufacturer>,<type>", like these:
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- compatible: Must be a "<manufacturer>,<model>" pair. The following <model>
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values are supported (assuming "atmel" as manufacturer):
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"atmel,24c00", "atmel,24c01", "atmel,24c02", "atmel,24c04",
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"atmel,24c08", "atmel,24c16", "atmel,24c32", "atmel,24c64",
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"atmel,24c128", "atmel,24c256", "atmel,24c512", "atmel,24c1024"
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"atmel,24c00",
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"atmel,24c01",
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"atmel,24c02",
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"atmel,spd",
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"atmel,24c04",
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"atmel,24c08",
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"atmel,24c16",
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"atmel,24c32",
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"atmel,24c64",
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"atmel,24c128",
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"atmel,24c256",
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"atmel,24c512",
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"atmel,24c1024",
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"catalyst,24c32"
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If <manufacturer> is not "atmel", then a fallback must be used
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with the same <model> and "atmel" as manufacturer.
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"microchip,24c128"
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Example:
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compatible = "microchip,24c128", "atmel,24c128";
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"ramtron,24c64"
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Supported manufacturers are:
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"renesas,r1ex24002"
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"catalyst",
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"microchip",
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"ramtron",
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"renesas",
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"nxp",
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"st",
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The following manufacturers values have been deprecated:
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"at", "at24"
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Some vendors use different model names for chips which are just
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variants of the above. Known such exceptions are listed below:
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If there is no specific driver for <manufacturer>, a generic
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device with <type> and manufacturer "atmel" should be used.
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Possible types are:
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"24c00", "24c01", "24c02", "24c04", "24c08", "24c16", "24c32", "24c64",
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"24c128", "24c256", "24c512", "24c1024", "spd"
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"renesas,r1ex24002" - the fallback is "atmel,24c02"
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- reg : the I2C address of the EEPROM
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