diff options
Diffstat (limited to 'Documentation/spi/pxa2xx')
-rw-r--r-- | Documentation/spi/pxa2xx | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/Documentation/spi/pxa2xx b/Documentation/spi/pxa2xx index 9c45f3df2e18..a1e0ee20f595 100644 --- a/Documentation/spi/pxa2xx +++ b/Documentation/spi/pxa2xx | |||
@@ -124,12 +124,12 @@ use a value of 8. | |||
124 | The "pxa2xx_spi_chip.timeout_microsecs" fields is used to efficiently handle | 124 | The "pxa2xx_spi_chip.timeout_microsecs" fields is used to efficiently handle |
125 | trailing bytes in the SSP receiver fifo. The correct value for this field is | 125 | trailing bytes in the SSP receiver fifo. The correct value for this field is |
126 | dependent on the SPI bus speed ("spi_board_info.max_speed_hz") and the specific | 126 | dependent on the SPI bus speed ("spi_board_info.max_speed_hz") and the specific |
127 | slave device. Please note the the PXA2xx SSP 1 does not support trailing byte | 127 | slave device. Please note that the PXA2xx SSP 1 does not support trailing byte |
128 | timeouts and must busy-wait any trailing bytes. | 128 | timeouts and must busy-wait any trailing bytes. |
129 | 129 | ||
130 | The "pxa2xx_spi_chip.enable_loopback" field is used to place the SSP porting | 130 | The "pxa2xx_spi_chip.enable_loopback" field is used to place the SSP porting |
131 | into internal loopback mode. In this mode the SSP controller internally | 131 | into internal loopback mode. In this mode the SSP controller internally |
132 | connects the SSPTX pin the the SSPRX pin. This is useful for initial setup | 132 | connects the SSPTX pin to the SSPRX pin. This is useful for initial setup |
133 | testing. | 133 | testing. |
134 | 134 | ||
135 | The "pxa2xx_spi_chip.cs_control" field is used to point to a board specific | 135 | The "pxa2xx_spi_chip.cs_control" field is used to point to a board specific |
@@ -208,7 +208,7 @@ DMA and PIO I/O Support | |||
208 | ----------------------- | 208 | ----------------------- |
209 | The pxa2xx_spi driver support both DMA and interrupt driven PIO message | 209 | The pxa2xx_spi driver support both DMA and interrupt driven PIO message |
210 | transfers. The driver defaults to PIO mode and DMA transfers must enabled by | 210 | transfers. The driver defaults to PIO mode and DMA transfers must enabled by |
211 | setting the "enable_dma" flag in the "pxa2xx_spi_master" structure and and | 211 | setting the "enable_dma" flag in the "pxa2xx_spi_master" structure and |
212 | ensuring that the "pxa2xx_spi_chip.dma_burst_size" field is non-zero. The DMA | 212 | ensuring that the "pxa2xx_spi_chip.dma_burst_size" field is non-zero. The DMA |
213 | mode support both coherent and stream based DMA mappings. | 213 | mode support both coherent and stream based DMA mappings. |
214 | 214 | ||