Re: [edk2-devel] [PATCH v2 3/4] Platform/RaspberryPi: User control of eMMC2 DMA

2021-02-08 Thread Andrei Warkentin
Reviewed-by: Andrei Warkentin From: Pete Batard Sent: Monday, February 8, 2021 11:08 AM To: Jeremy Linton ; devel@edk2.groups.io Cc: Andrei Warkentin ; samer.el-haj-mahm...@arm.com ; l...@nuviainc.com ; ardb+tianoc...@kernel.org Subject: Re: [PATCH v2 3/4] Pl

Re: [edk2-devel] [PATCH v2 3/4] Platform/RaspberryPi: User control of eMMC2 DMA

2021-02-08 Thread Pete Batard
On 2021.02.01 22:53, Jeremy Linton wrote: DMA translation on the eMMC2 vary based on SOC, and this is made worse by the poor _DMA support in linux. For now the "safe" option is to simply run the eMMC2 controller in PIO mode. More advanced users or !linux operating systems may choose to enable th

[edk2-devel] [PATCH v2 3/4] Platform/RaspberryPi: User control of eMMC2 DMA

2021-02-01 Thread Jeremy Linton
DMA translation on the eMMC2 vary based on SOC, and this is made worse by the poor _DMA support in linux. For now the "safe" option is to simply run the eMMC2 controller in PIO mode. More advanced users or !linux operating systems may choose to enable this to gain a perf boost. Signed-off-by: Jer