Laurent Pinchart be6893e195 dmaengine: rcar-dmac: Disable channel 0 when using IOMMU ...

A still unconfirmed hardware bug prevents the IPMMU microTLB 0 to be
flushed correctly, resulting in memory corruption. DMAC 0 channel 0 is
connected to microTLB 0 on currently supported platforms, so we can't
use it with the IPMMU. As the IOMMU API operates at the device level we
can't disable it selectively, so ignore channel 0 for now if the device
is part of an IOMMU group.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

2015-02-16 09:33:35 +05:30

..

Kconfig

dmaengine: rcar-dmac: Add Renesas R-Car Gen2 DMA Controller (DMAC) driver

2014-12-23 11:13:01 +02:00

Makefile

dmaengine: rcar-dmac: Add Renesas R-Car Gen2 DMA Controller (DMAC) driver

2014-12-23 11:13:01 +02:00

rcar-audmapp.c

…

rcar-dmac.c

dmaengine: rcar-dmac: Disable channel 0 when using IOMMU

2015-02-16 09:33:35 +05:30

rcar-hpbdma.c

dmaengine: rcar-hpbdma: tidyup residue_granularity

2015-01-25 22:37:05 -08:00

shdma-arm.h

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shdma-base.c

dmaengine: sh: Split device_control

2014-12-22 12:32:16 +05:30

shdma-of.c

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shdma-r8a73a4.c

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shdma.h

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shdmac.c

dmaengine: shdmac: extend PM methods

2015-02-12 12:52:18 +05:30

sudmac.c

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