Hi John,
On Mon, Oct 13, 2014 at 4:16 AM, John Crispin <blogic@xxxxxxxxxxx> wrote:
> While updating the mt7621 code to make use of the mips-cm i had to apply the
> following patch to get the unit booting. With this patch applied the SoC boots
> fine with and all 4 cores work.
Hmm... where does it hang? Can you tell if it's the access to the GCR
registers causing the hang or some subsequent access?
> The MT7621 has a broken iocu so i guess this might be related ? could someone that
> actually knows what those registers do enlighten me please :)
Adding Paul who probably knows more.
Do you know what the initial values of the GCR_REGn_{BASE,MASK}
registers are? Perhaps they're initially enabled and by writing the
base address first we screw up some translation? It looks like just
writing 0 to the mask register should also disable the region, at
least according to the interAptiv manual I have.
