From 58598f5be4fc15070fcb95a2ff36b7b966c3dee7 Mon Sep 17 00:00:00 2001 From: Rob Herring Date: Thu, 3 Sep 2015 17:47:47 -0500 Subject: dt-bindings: consolidate eeprom bindings Create a top level eeprom binding directory and move several scattered binding files there. Signed-off-by: Rob Herring Cc: Pawel Moll Cc: Mark Rutland Cc: Ian Campbell Cc: Kumar Gala --- Documentation/devicetree/bindings/eeprom/at25.txt | 35 ++++++++++++++++++++++ .../devicetree/bindings/eeprom/eeprom.txt | 28 +++++++++++++++++ 2 files changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/eeprom/at25.txt create mode 100644 Documentation/devicetree/bindings/eeprom/eeprom.txt (limited to 'Documentation/devicetree/bindings/eeprom') diff --git a/Documentation/devicetree/bindings/eeprom/at25.txt b/Documentation/devicetree/bindings/eeprom/at25.txt new file mode 100644 index 000000000000..1d3447165c37 --- /dev/null +++ b/Documentation/devicetree/bindings/eeprom/at25.txt @@ -0,0 +1,35 @@ +EEPROMs (SPI) compatible with Atmel at25. + +Required properties: +- compatible : "atmel,at25". +- reg : chip select number +- spi-max-frequency : max spi frequency to use +- pagesize : size of the eeprom page +- size : total eeprom size in bytes +- address-width : number of address bits (one of 8, 16, or 24) + +Optional properties: +- spi-cpha : SPI shifted clock phase, as per spi-bus bindings. +- spi-cpol : SPI inverse clock polarity, as per spi-bus bindings. +- read-only : this parameter-less property disables writes to the eeprom + +Obsolete legacy properties are can be used in place of "size", "pagesize", +"address-width", and "read-only": +- at25,byte-len : total eeprom size in bytes +- at25,addr-mode : addr-mode flags, as defined in include/linux/spi/eeprom.h +- at25,page-size : size of the eeprom page + +Additional compatible properties are also allowed. + +Example: + at25@0 { + compatible = "atmel,at25", "st,m95256"; + reg = <0> + spi-max-frequency = <5000000>; + spi-cpha; + spi-cpol; + + pagesize = <64>; + size = <32768>; + address-width = <16>; + }; diff --git a/Documentation/devicetree/bindings/eeprom/eeprom.txt b/Documentation/devicetree/bindings/eeprom/eeprom.txt new file mode 100644 index 000000000000..4342c10de1bf --- /dev/null +++ b/Documentation/devicetree/bindings/eeprom/eeprom.txt @@ -0,0 +1,28 @@ +EEPROMs (I2C) + +Required properties: + + - compatible : should be "," + If there is no specific driver for , a generic + driver based on 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>; +}; -- cgit v1.2.3-59-g8ed1b