Re: [PATCH RFC 3/3] spi: HiSilicon v3xx: Use DMI quirk to set controller buswidth override bits

From: John Garry
Date: Fri Feb 28 2020 - 12:17:25 EST


On 28/02/2020 16:20, Mark Brown wrote:
On Fri, Feb 28, 2020 at 11:18:51PM +0800, John Garry wrote:
The Huawei D06 board (and variants) can support Quad mode of operation.

Since we have no current method in ACPI SPI bus device resource description
to describe this information, use DMI to detect the board, and set the
controller buswidth override bits.

Hopefully this is something that the ACPI people will be looking to
address going forwards :/


Yeah, well I did mention the bugzilla [0] I raised for this in the cover letter; but I think that the new process workflows to raise feature requests in this way still needs to be formalized, so this may be blocked for now [1].

And unfortunately I can't actively participate in relevant standards WGs either, so if anyone else would like to assist, then that would great...

BTW, I think that it might also be good to request a generic jedec-compatible SPI NOR part ACPI HID/CID here also.

Thanks,
John

[0] https://bugzilla.tianocore.org/show_bug.cgi?id=2557
[1] https://edk2.groups.io/g/devel/message/53420


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