Re: [PATCH v2] pinctrl: at91-pio4: add support for drive strength

[Linus Walleij]

On Fri, Jun 29, 2018 at 10:19 AM Ludovic Desroches
<ludovic.desroches@xxxxxxxxxxxxx> wrote:

> Add support for the drive strength configuration. Usually, this value is
> expressed in mA. Since the numeric value depends on VDDIOP voltage, a
> value we can't retrieve at runtime, the controller uses low, medium and
> high to define the drive strength.
>
> The PIO controller accepts two values for the low drive configuration: 0
> and 1. Most of the time, we don't care about the drive strength. So we
> keep the default value which is 0. The drive strength is advertised
> through the sysfs only when it has been explicitly set in the device
> tree i.e. if its value is different from 0.
>
> Signed-off-by: Ludovic Desroches <ludovic.desroches@xxxxxxxxxxxxx>
> ---
>
> Changes:
> - v2: use atmel,drive-strength property instead of drive-strengh one
> since it is not expressend in mA and there is no way to retrieve this
> value at runtime.

Patch applied with Rob's ACK!

Yours,
Linus Walleij