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Diffstat (limited to 'Documentation/rapidio/tsi721.txt')
| -rw-r--r-- | Documentation/rapidio/tsi721.txt | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/rapidio/tsi721.txt b/Documentation/rapidio/tsi721.txt index 7c1c7bf48ec0..0e0e90bef882 100644 --- a/Documentation/rapidio/tsi721.txt +++ b/Documentation/rapidio/tsi721.txt @@ -25,6 +25,20 @@ fully compatible with RIONET driver (Ethernet over RapidIO messaging services). This parameter can be changed dynamically. Use CONFIG_RAPIDIO_DEBUG=y to enable debug output at the top level. +- 'dma_desc_per_channel' - This parameter defines number of hardware buffer + descriptors allocated for each registered Tsi721 DMA channel. + Its default value is 128. + +- 'dma_txqueue_sz' - DMA transactions queue size. Defines number of pending + transaction requests that can be accepted by each DMA channel. + Default value is 16. + +- 'dma_sel' - DMA channel selection mask. Bitmask that defines which hardware + DMA channels (0 ... 6) will be registered with DmaEngine core. + If bit is set to 1, the corresponding DMA channel will be registered. + DMA channels not selected by this mask will not be used by this device + driver. Default value is 0x7f (use all channels). + II. Known problems None. |