From: "alanx.chiang" <alanx.chi...@intel.com> The AT24 series chips use 8-bit address by default. If some chips would like to support more than 8 bits, the at24 driver should be added the compatible field for specfic chips.
Provide a flexible way to determine the addressing bits through address-width in this patch. Signed-off-by: Alan Chiang <alanx.chi...@intel.com> Signed-off-by: Andy Yeh <andy....@intel.com> Reviewed-by: Sakari Ailus <sakari.ai...@linux.intel.com> Reviewed-by: Andy Shevchenko <andriy.shevche...@intel.com> Reviewed-by: Rajmohan Mani <rajmohan.m...@intel.com> --- Documentation/devicetree/bindings/eeprom/at24.txt | 3 +++ 1 file changed, 3 insertions(+) diff --git a/Documentation/devicetree/bindings/eeprom/at24.txt b/Documentation/devicetree/bindings/eeprom/at24.txt index 61d833a..5879259 100644 --- a/Documentation/devicetree/bindings/eeprom/at24.txt +++ b/Documentation/devicetree/bindings/eeprom/at24.txt @@ -72,6 +72,8 @@ Optional properties: - wp-gpios: GPIO to which the write-protect pin of the chip is connected. + - address-width : number of address bits (one of 8, 16). + Example: eeprom@52 { @@ -79,4 +81,5 @@ eeprom@52 { reg = <0x52>; pagesize = <32>; wp-gpios = <&gpio1 3 0>; + address-width = <16>; }; -- 2.7.4