How to add custom dts entries

[Bernd Walter]

On Sat, Nov 03, 2018 at 02:46:30PM -0600, Ian Lepore wrote:
> We do have overlay support now. I don't know much about using it,
> hopefully those who do will reply with details.

That's good to know.
Hope for an answer too ;-)

> There have also been updates to the SPI world. Your apa102led0 fdt node
> now requires a "spi-max-frequency" property, the value is the bus speed
> to use when communicating with that device, in Hz (different devices on
> the same bus can now have different speeds, and there is no concept of
> a default speed). Also, the chipsel number should be in a reg=
> property, but we still support spi-chipselect= too for backwards
> compatibility. 

Ah, important information.
I had been using dev.spi.0.clock to increase speed.
Obviously dev.spi doesn't even exists anymore.
Have to check about the CS, technically it is a dummy value anyway,
since the APA102 LEDs don't have a chip select and are the only
device connected to the SPI.

-- 
B.Walter <bernd at bwct.de> http://www.bwct.de
Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.