gpioiic FDT overlays for sun8i-h3

[Nick Kostirya]

On Thu, 28 Nov 2019 06:21:49 +0100
Emmanuel Vadot <manu at bidouilliste.com> wrote:

> On Thu, 28 Nov 2019 15:29:01 +0200
> Nick Kostirya via freebsd-arm <freebsd-arm at freebsd.org> wrote:
> 
> > Hello.
> > I want use gpioiic on Nanopi NEO with PA0 and PA2 pins.
> > Nanopi NEO will be master.
> > Help me, please, to write overlay.

...

> 
>  I've never tested gpioiic but it seems that it needs to be a child of
> the gpio controller as the busdev is get via device_get_parent. It also
> doesn't seems to use a 'gpios' property, only scl/sda pin number, which
> means that you can only use it on one gpio controller (i.e. you can't
> have scl on one gpio controller and sda on another).
> 
>  Try this but I haven't even compiled it :
> 
> /dts-v1/;
> /plugin/;
> 
> / {
>     compatible = "allwinner,sun8i-h3";
> };
> 
> &{/soc/pinctrl at 1c20800} {
>         gpioiic0 {
>             compatible    = "gpioiic";
>             scl = <0>; /*    GPIO pin 00 (PA0) */
>             sda = <2>; /*    GPIO pin 02 (PA2) */
> 
>     };
> };
> 
> -- 
> Emmanuel Vadot <manu at bidouilliste.com>


# ofwdump -p /soc/pinctrl at 1c20800/gpioiic0
Node 0x1ce4: gpioiic0
  sda:
    00 00 00 02 
  scl:
    00 00 00 00 
  compatible:
    67 70 69 6f 69 69 63 00 
    'gpioiic'


# kldstat | grep iic
 2    1 0xc0cab000     50ac gpioiic.ko
 3    2 0xc0cb1000     6248 iicbb.ko

But I do not see it in devinfo and /dev.