Messages in this thread | | | From | Eugeniy Paltsev <> | Subject | [PATCH v4 0/2] DW DMAC: update device tree | Date | Wed, 23 Nov 2016 21:37:46 +0300 |
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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
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