Re: Query about Open drain flag with active LOW

[Linus Walleij <linus.walleij@xxxxxxxxxx>]

On Mon, Mar 27, 2017 at 5:21 PM, Laxman Dewangan <ldewangan@xxxxxxxxxx> wrote:

> I have the schematics, where I need to set it as
> Pin state HIGH (by setting gpio-input mode) to enable the circuit.
> Pin state LOW (by setting gpio-output mode with value to 0) to disable the
> circuit.
(...)
> With this, I think the GPIO is active HIGH and open drain type.
> If I set the active LOW from DT then I can not set pin to logical 1 using
> the API gpiod_set_value() with “1”.
> As this invert before calling _gpiod_set_raw_value() and so the value = 0
> and it set the pin in the gpio mode output-Low.
>
> Shouldn'’t open drain pin are active HIGH?

Sorry I do not understand, have you solved it?

Else can you try to break down the problem, do you mean there is a bug
in inverted handling for open drain lines in gpiolib?

Yours,
Linus Walleij
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