X-Git-Url: http://git.onelab.eu/?a=blobdiff_plain;f=Documentation%2Fspi%2Fpxa2xx;h=f9717fe9bd85296c8ae892003f70f013262a5fb1;hb=refs%2Fheads%2Fvserver;hp=9c45f3df2e1844ca27ce38d88d74fb02678968ba;hpb=76828883507a47dae78837ab5dec5a5b4513c667;p=linux-2.6.git

diff --git a/Documentation/spi/pxa2xx b/Documentation/spi/pxa2xx
index 9c45f3df2..f9717fe9b 100644
--- a/Documentation/spi/pxa2xx
+++ b/Documentation/spi/pxa2xx
@@ -102,7 +102,7 @@ struct pxa2xx_spi_chip {
 	u8 tx_threshold;
 	u8 rx_threshold;
 	u8 dma_burst_size;
-	u32 timeout_microsecs;
+	u32 timeout;
 	u8 enable_loopback;
 	void (*cs_control)(u32 command);
 };
@@ -121,15 +121,15 @@ the PXA2xx "Developer Manual" sections on the DMA controller and SSP Controllers
 to determine the correct value. An SSP configured for byte-wide transfers would
 use a value of 8.
 
-The "pxa2xx_spi_chip.timeout_microsecs" fields is used to efficiently handle
+The "pxa2xx_spi_chip.timeout" fields is used to efficiently handle
 trailing bytes in the SSP receiver fifo.  The correct value for this field is
 dependent on the SPI bus speed ("spi_board_info.max_speed_hz") and the specific
-slave device.  Please note the the PXA2xx SSP 1 does not support trailing byte
+slave device.  Please note that the PXA2xx SSP 1 does not support trailing byte
 timeouts and must busy-wait any trailing bytes.
 
 The "pxa2xx_spi_chip.enable_loopback" field is used to place the SSP porting
 into internal loopback mode.  In this mode the SSP controller internally
-connects the SSPTX pin the the SSPRX pin.  This is useful for initial setup
+connects the SSPTX pin to the SSPRX pin.  This is useful for initial setup
 testing.
 
 The "pxa2xx_spi_chip.cs_control" field is used to point to a board specific
@@ -162,18 +162,18 @@ static void cs8405a_cs_control(u32 command)
 }
 
 static struct pxa2xx_spi_chip cs8415a_chip_info = {
-	.tx_threshold = 12, /* SSP hardward FIFO threshold */
-	.rx_threshold = 4, /* SSP hardward FIFO threshold */
+	.tx_threshold = 8, /* SSP hardward FIFO threshold */
+	.rx_threshold = 8, /* SSP hardward FIFO threshold */
 	.dma_burst_size = 8, /* Byte wide transfers used so 8 byte bursts */
-	.timeout_microsecs = 64, /* Wait at least 64usec to handle trailing */
+	.timeout = 235, /* See Intel documentation */
 	.cs_control = cs8415a_cs_control, /* Use external chip select */
 };
 
 static struct pxa2xx_spi_chip cs8405a_chip_info = {
-	.tx_threshold = 12, /* SSP hardward FIFO threshold */
-	.rx_threshold = 4, /* SSP hardward FIFO threshold */
+	.tx_threshold = 8, /* SSP hardward FIFO threshold */
+	.rx_threshold = 8, /* SSP hardward FIFO threshold */
 	.dma_burst_size = 8, /* Byte wide transfers used so 8 byte bursts */
-	.timeout_microsecs = 64, /* Wait at least 64usec to handle trailing */
+	.timeout = 235, /* See Intel documentation */
 	.cs_control = cs8405a_cs_control, /* Use external chip select */
 };
 
@@ -208,7 +208,7 @@ DMA and PIO I/O Support
 -----------------------
 The pxa2xx_spi driver support both DMA and interrupt driven PIO message
 transfers.  The driver defaults to PIO mode and DMA transfers must enabled by
-setting the "enable_dma" flag in the "pxa2xx_spi_master" structure and and
+setting the "enable_dma" flag in the "pxa2xx_spi_master" structure and
 ensuring that the "pxa2xx_spi_chip.dma_burst_size" field is non-zero.  The DMA
 mode support both coherent and stream based DMA mappings.