diff options
Diffstat (limited to 'Documentation/spi')
| -rw-r--r-- | Documentation/spi/pxa2xx.rst | 3 | ||||
| -rw-r--r-- | Documentation/spi/spi-summary.rst | 4 |
2 files changed, 0 insertions, 7 deletions
diff --git a/Documentation/spi/pxa2xx.rst b/Documentation/spi/pxa2xx.rst index 0997d8eaf190..33d2ad95901e 100644 --- a/Documentation/spi/pxa2xx.rst +++ b/Documentation/spi/pxa2xx.rst @@ -194,9 +194,6 @@ The following logic is used to determine the type of I/O to be used on a per "spi_transfer" basis:: if spi_message.len > 65536 then - if spi_message.is_dma_mapped or rx_dma_buf != 0 or tx_dma_buf != 0 then - reject premapped transfers - print "rate limited" warning use PIO transfers diff --git a/Documentation/spi/spi-summary.rst b/Documentation/spi/spi-summary.rst index 546de37d6caf..f7f8b1573f25 100644 --- a/Documentation/spi/spi-summary.rst +++ b/Documentation/spi/spi-summary.rst @@ -419,10 +419,6 @@ any more such messages. to make extra copies unless the hardware requires it (e.g. working around hardware errata that force the use of bounce buffering). - If standard dma_map_single() handling of these buffers is inappropriate, - you can use spi_message.is_dma_mapped to tell the controller driver - that you've already provided the relevant DMA addresses. - - The basic I/O primitive is spi_async(). Async requests may be issued in any context (irq handler, task, etc) and completion is reported using a callback provided with the message. |