Re: [PATCH 0/3] SD+USB perf/DMA fixes

Samer El-Haj-Mahmoud

Adding Ard’s new e-mail


From: <> On Behalf Of Andrei Warkentin via
Sent: Friday, April 30, 2021 4:30 PM
To: Jeremy Linton <Jeremy.Linton@...>;
Cc: Ard Biesheuvel <Ard.Biesheuvel@...>; leif@...; pete@...; Samer El-Haj-Mahmoud <Samer.El-Haj-Mahmoud@...>
Subject: Re: [edk2-devel] [PATCH 0/3] SD+USB perf/DMA fixes




Reviewed-by: Andrei Warkentin <awarkentin@...>

From: Jeremy Linton <jeremy.linton@...>
Sent: Thursday, April 8, 2021 12:58 AM
To: <>
Cc: ard.biesheuvel@... <ard.biesheuvel@...>; leif@... <leif@...>; pete@... <pete@...>; samer.el-haj-mahmoud@... <samer.el-haj-mahmoud@...>; Andrei Warkentin <awarkentin@...>; Jeremy Linton <jeremy.linton@...>
Subject: [PATCH 0/3] SD+USB perf/DMA fixes


A large part of why the emmc & dwc2 usb
controllers haven't been working properly is
because the "bus" _DMA was incorrectly tagged
as a consumer, when it needs to be a producer.

That is why linux has been dropping the
translation value portions of _DMA().

Since the emmc2 dma (with the old B0 SoC), and the
dwc2 is expected to work, lets add matching 30 bit
IORT entries for them.

Finally, in the shuffle the high speed cap bit override
was dropped from the linux patches, and I failed
to add it back to the firmware values, this caused
the wifi perf to be lower than it should have been.

Jeremy Linton (3):
  Platform/RaspberryPi/Acpitables: Enable Arasan hispeed mode
  Platform/RaspberryPi/AcpiTables: Add further named components
  Platform/RaspberryPi/AcpiTables: Correct _DMA consumer

 Platform/RaspberryPi/AcpiTables/Dsdt.asl  |  2 +-
 Platform/RaspberryPi/AcpiTables/Emmc.asl  |  2 +-
 Platform/RaspberryPi/AcpiTables/Iort.aslc | 44 ++++++++++++++++++++++++++++++-
 Platform/RaspberryPi/AcpiTables/Sdhc.asl  |  2 +-
 4 files changed, 46 insertions(+), 4 deletions(-)


IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you.

Join to automatically receive all group messages.