gpioiic FDT overlays for sun8i-h3

[Nick Kostirya]

On Thu, 19 Dec 2019 10:29:16 -0700
Ian Lepore <ian at freebsd.org> wrote:

> 
> The gpioiic node needs to be defined at the root of the devicetree, not
> under the pinctrl node.  Assuming that all pins are configured as gpios
> by default (they are on most SOCs) you probably don't need a pinctrl
> node for them at all.  If you do, someone who knows allwinner stuff
> better than me would have to provide an example of that part.
> 
> To add the gpioiic driver node using pins 0 and 2 like your example, I
> think it should be just this:
> 
>    /dts-v1/;
>    /plugin/;
> 
>    / {
>        compatible = "allwinner,sun8i-h3";
>    };
> 
>    &{/} {
>        gpioiic at 0 {
>            compatible = "i2c-gpio";
>            scl-gpios =
>    <&pio 0 0 GPIO_ACTIVE_HIGH>;
>            sdl-gpios = <&pio 0 2
>    GPIO_ACTIVE_HIGH>;  
>    };

Hello.
This is me again.
I have gpioiic0 and I wanted to add another gpioiic (gpioiic1):

    gpioiic at 1 {
        compatible = "i2c-gpio";
        scl-gpios = <&pio 0 22 GPIO_ACTIVE_HIGH>; /* GPIO pin 22 (PC0) */
        sda-gpios = <&pio 0 23 GPIO_ACTIVE_HIGH>; /* GPIO pin 23 (PC1) */
    };

But I got error in dmesg:
gpiobus0: invalid pin -1058976448, max: 93

Must gpioiic be only one?

Nick.