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Re: [Qemu-devel] [PATCH v1 0/4] Connect the Xilinx ZynqMP IPI device
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH v1 0/4] Connect the Xilinx ZynqMP IPI device |
Date: |
Tue, 5 Jul 2016 21:37:26 +0100 |
On 5 July 2016 at 21:30, Alistair Francis <address@hidden> wrote:
> This patchset adds and connects the Xilinx ZynqmP IPI devices using the
> register GPIO line.
>
> This requires adding the register GPIO API which allows registers to be
> mapped to GPIOs. This GPIO is used to propergate register reads/writes
> to other devices and other registers.
>
> This is useful to update register values in other devices when events
> occur.
I (still) don't think this is useful enough to be worth it.
In fact you can see in patch 4 the problems it causes,
because the register API has left you with named GPIOs
like "PMU_0", "PMU_1", etc rather than a single array
of GPIOs named "PMU", which then means you can't loop
through wiring it up.
thanks
-- PMM