Re: [PATCH v13 5/5] uart: pl011: Add support to ZTE ZX296702 uart

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On 10/26/2015 10:19 AM, Andre Przywara wrote:

We have an internal patch that I'm trying to upstream, but I need the
amba-pl011 driver to stabilize first.

As mentioned earlier, this looks like the perfect opportunity now to get
the change in (since I see it as a subset of Jun's series). "Waiting for
stabilization" sounds a bit optimistic to me in a general Linux context ;-)

I will post it today.

We use ACPI bindings.  It's our ARM64 server-class SOC.  We use the ACPI
subtype 13 to identify it.

Does "subtype 13" refer to the UUID field here? So instead of using UUID
0 you have some vendor specific field set in your ARMH0011 table? Is
that "just made up" or specified somewhere so that there will be no
other usage of that number later?

It's part of the ARMH0011 table. There are already a couple subtypes, but a bunch more were added. It's table 3 in this document: http://go.microsoft.com/fwlink/p/?linkid=403551

Notice how the new subtype is already deprecated. That's because it's technically a bug for hardware to require 32-bit accesses.

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