lkml.org 
[lkml]   [2016]   [Nov]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
From
Subject[PATCH v4 0/2] DW DMAC: update device tree
Date
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 v4:
* Fix setting inverted value to "dwc->nollp". My fault - I
tested with wrong DTS, so DMAC was configured from autoconfig
instead of device tree. Pointed by Andy Shevchenko.
* Update "multi-block" diescription in documentation to be more
clear. Pointed by Arnd Bergmann.

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 | 3 +++
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, 18 insertions(+), 4 deletions(-)

--
2.5.5

\
 
 \ /
  Last update: 2016-11-23 19:39    [W:0.064 / U:0.216 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site