Re: [PATCH 1/2] dma: add Qualcomm Technologies HIDMA management driver

From: Sinan Kaya
Date: Fri Oct 30 2015 - 14:48:17 EST




On 10/30/2015 2:40 PM, Andy Shevchenko wrote:
On Fri, Oct 30, 2015 at 8:25 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote:

CSRT is an Intel specific ACPI table for slave devices.

Wrong.
It was designed by Microsoft to support multiple controllers, in
particular DMACs.
Have you read that document I posted link to?

Nope.

It was decided by
Linaro that CSRT will not be supported for ARM64.

Interesting, ARM64 platforms are not going to have more than one DMAC
per system?

I cannot imagine that being true, and I don't see why Linaro would
decide such a thing.

See this.

https://wiki.linaro.org/LEG/Engineering/Kernel/ACPI/TablePriorities



It does appear that it's not relevant to this device and driver, given
the lack of clients, unless I've misunderstood?

Yeah, just a side note.

OK.

--
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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