[PATCH linux dev-4.17 3/7] mmc: Aspeed: Add Aspeed sdhci core driver

[Benjamin Herrenschmidt]

On Thu, 2018-07-26 at 11:41 +1000, Benjamin Herrenschmidt wrote:
> Change the "irq" prefixes on the functions.. Dont' do a chained
> handler, that will be too much overhead for no benefit. Your SoC aren't
> very fast and you want to avoid that overhead.
> 
> Just do a normal interrupt handler, and have it call each port
> interrupts.
> 
> This isn't really an interrupt controller, it has no
> enable/disable/masking ability, I would just create the ports directly
> from the same driver and process the interrupts.
> 
> I don't think there's benefit in keeping the ports as separate drivers.

Look at how shdci-pci does it, sdhci-acpi as well, they have multiple
slots. You can just register multiple slots from a single driver
I think. You can still use device-tree sub-nodes and iterate them
from the core driver to create the slots if you want, in case you may
add slots in the future, but it's not even that a big deal.

Ben.