[PATCH v3 0/2] DW DMAC: update device tree

From: Eugeniy Paltsev
Date: Fri Nov 18 2016 - 14:12:48 EST


It wasn't possible to enable some features like
memory-to-memory transfers or multi block transfers via DT.
It is fixed by these patches.

Changes for v3:
* Update existing platform data.
We don't need to update existing DTS because default logic
wasn't change: we don't set "is_nollp" if we read
configuration from DT before. And we don't set it now if
"multi-block" property doesn't exist in DTS.

Changes for v2:
* I thought about is_memcpy DT property: all known devices, which
use DT for configuration, support memory-to-memory transfers.
So we don't need to read it from DT. So enable it by default,
if we read configuration from DT.

* Use "multi-block" instead of "hw-llp" name to be more clear.

* Move adding DT property and adding documentation for this
property to one patch.

Eugeniy Paltsev (2):
DW DMAC: enable memory-to-memory transfers support
DW DMAC: add multi-block property to device tree

Documentation/devicetree/bindings/dma/snps-dma.txt | 2 ++
drivers/dma/dw/core.c | 2 +-
drivers/dma/dw/platform.c | 11 +++++++++++
drivers/tty/serial/8250/8250_lpss.c | 2 +-
include/linux/platform_data/dma-dw.h | 4 ++--
5 files changed, 17 insertions(+), 4 deletions(-)

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2.5.5