Re: [PATCH v3 1/2] dt-bindings: at24: Add address-width property

[Bartosz Golaszewski]

2018-06-27 7:46 GMT+02:00  <alanx.chiang@xxxxxxxxx>:
> From: Alan 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>
>
> ---
> since v1:
> -- Remove the address-width field in the example.
> since v2:
> -- Remove redundant space.
>
> ---
>  Documentation/devicetree/bindings/eeprom/at24.txt | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/eeprom/at24.txt b/Documentation/devicetree/bindings/eeprom/at24.txt
> index 61d833a..aededdb 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 {
> --
> 2.7.4
>

Rob,

we only have two possibilities here and the default is 8 bits.

What do you think about introducing a boolean property here called:
'address-width-16' instead of an integer?

Best regards,
Bartosz Golaszewski