path: root/Documentation/spi
diff options
Diffstat (limited to 'Documentation/spi')
3 files changed, 39 insertions, 3 deletions
diff --git a/Documentation/spi/ep93xx_spi b/Documentation/spi/ep93xx_spi
index d8eb01c15db..832ddce6e5f 100644
--- a/Documentation/spi/ep93xx_spi
+++ b/Documentation/spi/ep93xx_spi
@@ -26,7 +26,7 @@ arch/arm/mach-ep93xx/ts72xx.c:
#include <linux/gpio.h>
#include <linux/spi/spi.h>
-#include <mach/ep93xx_spi.h>
+#include <linux/platform_data/spi-ep93xx.h>
/* this is our GPIO line used for chip select */
diff --git a/Documentation/spi/spi-sc18is602 b/Documentation/spi/spi-sc18is602
new file mode 100644
index 00000000000..a45702865a3
--- /dev/null
+++ b/Documentation/spi/spi-sc18is602
@@ -0,0 +1,36 @@
+Kernel driver spi-sc18is602
+Supported chips:
+ * NXP SI18IS602/602B/603
+ Datasheet: http://www.nxp.com/documents/data_sheet/SC18IS602_602B_603.pdf
+ Guenter Roeck <linux@roeck-us.net>
+This driver provides connects a NXP SC18IS602/603 I2C-bus to SPI bridge to the
+kernel's SPI core subsystem.
+The driver does not probe for supported chips, since the SI18IS602/603 does not
+support Chip ID registers. You will have to instantiate the devices explicitly.
+Please see Documentation/i2c/instantiating-devices for details.
+Usage Notes
+This driver requires the I2C adapter driver to support raw I2C messages. I2C
+adapter drivers which can only handle the SMBus protocol are not supported.
+The maximum SPI message size supported by SC18IS602/603 is 200 bytes. Attempts
+to initiate longer transfers will fail with -EINVAL. EEPROM read operations and
+similar large accesses have to be split into multiple chunks of no more than
+200 bytes per SPI message (128 bytes of data per message is recommended). This
+means that programs such as "cp" or "od", which automatically use large block
+sizes to access a device, can not be used directly to read data from EEPROM.
+Programs such as dd, where the block size can be specified, should be used
diff --git a/Documentation/spi/spi-summary b/Documentation/spi/spi-summary
index 7312ec14dd8..2331eb21414 100644
--- a/Documentation/spi/spi-summary
+++ b/Documentation/spi/spi-summary
@@ -345,7 +345,7 @@ SPI protocol drivers somewhat resemble platform device drivers:
.probe = CHIP_probe,
- .remove = __devexit_p(CHIP_remove),
+ .remove = CHIP_remove,
.suspend = CHIP_suspend,
.resume = CHIP_resume,
@@ -355,7 +355,7 @@ device whose board_info gave a modalias of "CHIP". Your probe() code
might look like this unless you're creating a device which is managing
a bus (appearing under /sys/class/spi_master).
- static int __devinit CHIP_probe(struct spi_device *spi)
+ static int CHIP_probe(struct spi_device *spi)
struct CHIP *chip;
struct CHIP_platform_data *pdata;