Re: Question about ASPEED GPIO value/direction set order

[Andrew Jeffery <andrew@xxxxxxxxxxxxxxxxxxxx>]

Hi Nikita,

On Tue, 2025-03-11 at 15:40 +0300, Nikita Shubin wrote:
> Hi Joel and Andrew !
> 
> I am observing "strange" behaviour when pin direction is set AFTER
> the
> value itself:
> 
> ```
> aspeed_gpio_dir_out:
> 
> __aspeed_gpio_set(gc, offset, val);
> gpio->config->llops->reg_bit_set(gpio, offset, reg_dir, 1);
> ```
> 
> Is this as intended ?

Yes; you tend to set the value only when using the GPIO for output, and
by setting the value before setting the direction, we avoid the
potential value glitch which occurs under the opposite order.

Andrew