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Date:	Mon, 6 Oct 2014 19:47:25 +0100
From:	Matthew Garrett <>
To:	Arnd Bergmann <>
Cc:	Suravee Suthikulanit <>,,,,,,,,,,,,,,,,
	"Duran, Leo" <>, Jon Masters <>
Subject: Re: [PATCH 1/4] ata: ahci_platform: Add ACPI support for AMD Seattle
 SATA controller

On Mon, Oct 06, 2014 at 08:44:35PM +0200, Arnd Bergmann wrote:
> On Monday 06 October 2014 19:21:53 Matthew Garrett wrote:
> > Unfortunately not. I'd assume that PM registers are expected to be 
> > accessed via the _PS* methods instead. Does MSI make sense outside the 
> > context of PCI interrupts?
> Yes, the ARM GIC has a weird sense of what MSI is used for, and
> apparently some SoC vendors have started using MSI by default for
> all on-chip peripherals.
> A patch series to extend MSI to platform devices is currently
> under review.

Mm. Yeah, it doesn't seem like there's any ACPI-defined mechanism for 
MSI control. Let's chat about this next week?

Matthew Garrett |
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