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Add other variants of at24 EEPROMs we support in the driver to the
list of allowed compatible fallbacks.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Rob Herring <robh@kernel.org>
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Make formatting and style consistent for the entire document.
This patch doesn't change the content of the binding.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Rob Herring <robh@kernel.org>
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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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AT24 EEPROMs have a write-protect pin, which - when pulled high -
inhibits writes to the upper quadrant of memory (although it has been
observed that on some chips it disables writing to the entire memory
range).
On some boards, this pin is connected to a GPIO and pulled high by
default, which forces the user to manually change its state before
writing. On linux this means that we either need to hog the line all
the time, or set the GPIO value before writing from outside of the
at24 driver.
Add a new optional property to the device tree binding document, which
allows to specify the GPIO line to which the write-protect pin is
connected.
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
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Adds an optional property for at24 eeproms. This parameterless
property indicates that the multi-address eeprom does not
automatically roll over reads to the next slave address.
Signed-off-by: Sven Van Asbroeck <svendev@arcx.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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This binding documentation is for the at24 driver, so the filename
should reflect it. This avoids confusion because we also have an
"eeprom" driver in Linux but it doesn't support DT even.
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Bartosz Golaszewski <brgl@bgdev.pl>
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