Allwinner dtb overlays on CURRENT. Also, flashrom SPI!

[Greg V]

On Sun, Jul 29, 2018 at 5:44 PM, Ian Lepore <ian at freebsd.org> wrote:
> On Wed, 2018-07-25 at 22:49 +0300, Greg V wrote:
>>  Hi,
>> 
>>  One thing I have noticed with CURRENT on an Orange Pi PC: since 
>> we're
>>  using device trees imported from Linux, some drivers are not 
>> accessible
>>  out of the box.
>> 
>>  So I wrote a couple overlays:
>> 
>>  Thermal sensor: https://github.com/freebsd/freebsd/pull/162
>> 
>>  SPI: https://github.com/freebsd/freebsd/pull/166
>> 
>>  But not everyone would figure out how to make and even just use
>>  overlays…
>> 
>>  (if anyone is wondering: place them into /boot/dtb/overlays and add 
>> a
>>  list of them (filenames including extension) to /boot/loader.conf 
>> like
>>  so: 
>> fdt_overlays="sun8i-h3-sid.dtbo,sun8i-h3-ts.dtbo,sun8i-h3-spi.dtbo"
>>  — and reboot)
>> 
>>  Can someone commit these overlays / add more for other SoCs maybe?
>> 
>>  P.S. I also wrote spigen support for flashrom:
>>  https://github.com/flashrom/flashrom/pull/53
>>  With this, I can flash and verify a Winbond W25Q32.V flash chip 
>> from my
>>  Orange Pi! :)
> 
> Why in the world would you use spigen instead of the normal mx25l
> spiflash driver and a simple dd to/from /dev/flash/spiN ?
> 
> Hrm. Maybe because mx25l, and most SPI-related stuff, isn't 
> documented.
> My to-do list knows no bounds.

Yeah, because of that too :)

but also (as I mentioned below in the thread):

flashrom has chip autodetection, support for more chips, it's easy to 
adjust speed (it's right in the command)…

also it's just *popular*, people know *flashrom specifically*