[Linaro-acpi] [PATCH V1 11/11] arm64, pci, acpi: Support for ACPI based PCI hostbridge init
okaya at codeaurora.org
Thu Nov 5 06:48:50 PST 2015
On 11/3/2015 12:43 PM, Sinan Kaya wrote:
> In any case, the hardware document says 32 bit configuration space
> access to the host bridge only. I'll get more clarification.
I got confirmation this morning that this chip supports 32 bit access to
the root complex configuration space. 8/16/32 bits accesses to the
endpoints are supported.
>> You can probably work around this by using the legacy I/O port method
>> rather than ECAM, if the PCI host bridge itself is functional and just
>> the host bus it is connected to is buggy.
> From the sounds of it, we'll need a quirk for config space. We support
> legacy I/O only to make the endpoints happy. Some endpoints do not get
> initialized if they don't have a BAR address assigned to all the BAR
We'll need an MCFG fix up.
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