[OpenWrt-Devel] OpenWRT ppc44x target & the APM821XX SoC

[Imre Kaloz]

Hi Chris,

On Thu, 31 Mar 2016 01:00:19 +0200, Chris Blake <chrisrblake93 at gmail.com>  
wrote:

> Quick Question about the ppc44x target. I am currently working on
> porting over a PowerPC Device that uses the APM821XX SoC (464-based)
> but the closest current target would be ppc44x, which seems to be a
> bit outdated and lacks support for some system level integration
> (LED's, sysupgrade scripts, etc.). I was able to get OpenWRT up and
> running by creating a new device target for this SoC, but I was
> curious on the best way to get this merged upstream.
>
> The device in Question is a Cisco Meraki MR24, which has a APM82181
> 800Mhz SoC, 128MB DDR2 RAM, and 2x Atheros PCIe wireless cards. The
> current working code can be found at
> https://github.com/riptidewave93/Openwrt-MR24 but I was curious on
> which of the following is the best way to move forward:
>
> 1. RFC the current code (new device target for this SoC) for review.
> 2. Create a new apm821xx subtarget for the ppc44x target, and RFC for  
> review.
> 3. Other ideas?

I also have some patches for the APM82181, which I can update to 4.4. Are  
you on 4.4 already?
In any case, the APM82181 is a PPC464 based core, which isn't the same as  
the 44x so it shouldn't be it's subtarget.

> I am also aware of another developer working on porting over another
> device that uses this SoC, so it would be nice to know which path of
> action is recommended as other PPC targets (ex, mpc85xx) have been
> branched out in the past.

Apples and oranges ;) The rule of thumb is "as long as there are more  
differences than similarities, it should be a separate target".


Imre
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