Thread (20 messages) 20 messages, 4 authors, 2015-10-05

Re: [PATCH v7 5/6] Documentation: dt-bindings: pci: altera pcie device tree binding

From: Marc Zyngier <hidden>
Date: 2015-10-03 13:11:09
Also in: linux-arm-kernel, linux-pci, lkml

On Fri, 2 Oct 2015 23:56:37 +0200
Arnd Bergmann [off-list ref] wrote:
On Friday 02 October 2015 15:53:44 Ley Foon Tan wrote:
quoted
quoted
Strictly speaking, if you have undocumented bindings downstream that
is your problem and we don't have to accept them as-is upstream. I'm
not going to worry about that here.
quoted
quoted
txs contains the config space?
It is not the config space, but a memory slave port.
Then where is the config space? It should not be part of "ranges" is
all I care about.
The config space is not part of "ranges". Our IP uses TLP packet to
access config space.
It took me a bit to figure out what you mean here. To save others
from reading the source, here is what I found:

* The config space is accessed indirectly through registers from the
  "cra" register range, which is the right approach according to the
  point that Rob made.
* hardware-wise this basically looks like bit-banged PCIe, which is
  both awesome and scary ;-)
drivers/pcie/host/pcie-host-gpio.c anyone? ;-)

	M.
-- 
Jazz is not dead. It just smells funny.
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