Messages in this thread | | | Subject | Re: [Linaro-acpi] [PATCH V1 11/11] arm64, pci, acpi: Support for ACPI based PCI hostbridge init | From | Sinan Kaya <> | Date | Thu, 5 Nov 2015 09:48:50 -0500 |
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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 > resources.
We'll need an MCFG fix up.
-- Sinan Kaya Qualcomm Technologies, Inc. on behalf of Qualcomm Innovation Center, Inc. Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, a Linux Foundation Collaborative Project
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