Re: Orange pi one questions

[Jared McNeill <jmcneill%invisible.ca@localhost>]

On Fri, 29 Sep 2017, Dave Tyson wrote:

>   Since the green led is connected to a different gpio register I
>   wonder if this has not had the mode programmed. I seem to remember
>   seeing a post about adding a bit of code to u-boot to set the
>   register into the correct mode.

The r_pio controller in the dt refers to a clock node that we don't have a 
driver for. Clocks are probably not turned on for the GPIO controller as a 
result. We'll need to add support for the allwinner,sun8i-h3-r-ccu device.

>   armv7# gpioctl gpio0
>   /dev/gpio0: 0 pins
>   armv7# gpioctl gpio1
>   /dev/gpio1: 0 pins
>
>   Is this because the code is incomplete?

Pins are not exposed to userland by default, you need to enable them in 
/etc/gpio.conf. A real pain IMHO.

> I currently connect via a serial port (or network). I have a vga monitor
> attached via a HDMi dongle, but nothing appears on the screen. I have
> tried a few mods to the u-boot config to no avail - has anyone got video
> working?

I think latest U-Boot from pkgsrc + latest dtb from the SUNXI kernel build 
is supposed to work. It is entirely reliant on U-Boot setting up the 
display at this point, so YMMV. Not sure about HDMI to VGA adapters.