From: "alanx.chiang" <alanx.chiang@xxxxxxxxx>
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.chiang@xxxxxxxxx>
Signed-off-by: Andy Yeh <andy.yeh@xxxxxxxxx>
Reviewed-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxx>
Reviewed-by: Rajmohan Mani <rajmohan.mani@xxxxxxxxx>
---
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
