Re: [PATCH 05/11] dt-binding: Add ngpios property to GPIO controller node

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Mon, Oct 19, 2015 at 7:43 AM, Pramod Kumar <pramodku@xxxxxxxxxxxx> wrote:

> Add ngpios property to the gpio controller's DT node so that controller
> driver extracts total number of gpio lines present in controller
> from DT and removes dependency on driver.
>
> Signed-off-by: Pramod Kumar <pramodku@xxxxxxxxxxxx>
> Reviewed-by: Ray Jui <rjui@xxxxxxxxxxxx>
> Reviewed-by: Scott Branden <sbranden@xxxxxxxxxxxx>
(...)
> +- ngpios:
> +    Total number of GPIOs the controller provides

This description is wrong. The number of GPIOs the controller *provides*
is to be determined by the compatible-string.

ngpios is used to restrict the number of lines *used* or *routed* from
the number *available*. (I hope that is what the code does as well.)
Such as if 12 GPIOs are used of the 32 available on 32bits in a
register.

Update this description to say what it really means.

Yours,
Linus Walleij
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