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| author |   Vinod Koul <vinod.koul@intel.com> | 2017-09-06 21:54:48 +0530 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2017-09-06 21:54:48 +0530 |
| commit | 346ea25e811b1e260fde7a446aa18833ca7e7b79 (patch) | |
| tree | f827832a9e99c6b489f14fd046254e3970449fce /Documentation | |
| parent | Merge branch 'topic/ppc4xx' into for-linus (diff) | |
| parent | dmaengine: qcom: bam_dma: add command descriptor flag (diff) | |
| download | linux-dev-346ea25e811b1e260fde7a446aa18833ca7e7b79.tar.xz linux-dev-346ea25e811b1e260fde7a446aa18833ca7e7b79.zip | |
Merge branch 'topic/qcom' into for-linus
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/dmaengine/provider.txt | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/Documentation/dmaengine/provider.txt b/Documentation/dmaengine/provider.txt index e33bc1c8ed2c..bfadbfdf13ed 100644 --- a/Documentation/dmaengine/provider.txt +++ b/Documentation/dmaengine/provider.txt @@ -395,6 +395,13 @@ where to put them) when DMA_CTRL_REUSE is already set - Terminating the channel + * DMA_PREP_CMD + - If set, the client driver tells DMA controller that passed data in DMA + API is command data. + - Interpretation of command data is DMA controller specific. It can be + used for issuing commands to other peripherals/register reads/register + writes for which the descriptor should be in different format from + normal data descriptors. General Design Notes -------------------- |