[U-Boot] [PATCH] arm64: allwinner: a64: Disable ehci1 and ohci1 for bananapi, nanopi

[Vasily Khoruzhick]

On Tue, Jul 3, 2018 at 5:45 PM, André Przywara <andre.przywara at arm.com> wrote:

>>
>> I tried enabling DM for MMC on A64 recently and unfortunately it results in
>> SPL exceeding 32kb size limit.
>
> Mmh, worked for me with this preliminary branch:
> [1] https://github.com/apritzel/u-boot/commits/sunxi-dm-WIP
> (which I forgot to link in my original email).
> Did you enable SPL_DM_MMC or SPL_DM as well? I think there is not much
> benefit in doing so, especially given the code size issue.

Yes, I did. We'll need it to handle all the controller quirks
eventually (new clock mode, calibration, delays).
Currently we have a number of ifdefs in the driver.

>> So I guess we'll have to find a workaround for this issue as well...
>
> I recently made a patch that shrinks the ARMv8 exception table code by
> 250 bytes. Not much, but might help. How much did you overflow?
> I think eventually we should generate the exception table and put it
> somewhere else than in SRAM A1. That has the potential of freeing up
> about 2KB or so. I started rewriting the vectors to make this easier,
> but it's not very high on my TODO list.

That won't be enough:

aarch64-linux-gnu-ld.bfd: region `.sram' overflowed by 10584 bytes

>
> Cheers,
> Andre.