Based on kernel version 4.16.1. Page generated on 2018-04-09 11:53 EST.
1 Kernel driver spi-sc18is602 2 =========================== 3 4 Supported chips: 5 * NXP SI18IS602/602B/603 6 Datasheet: http://www.nxp.com/documents/data_sheet/SC18IS602_602B_603.pdf 7 8 Author: 9 Guenter Roeck <linux@roeck-us.net> 10 11 12 Description 13 ----------- 14 15 This driver provides connects a NXP SC18IS602/603 I2C-bus to SPI bridge to the 16 kernel's SPI core subsystem. 17 18 The driver does not probe for supported chips, since the SI18IS602/603 does not 19 support Chip ID registers. You will have to instantiate the devices explicitly. 20 Please see Documentation/i2c/instantiating-devices for details. 21 22 23 Usage Notes 24 ----------- 25 26 This driver requires the I2C adapter driver to support raw I2C messages. I2C 27 adapter drivers which can only handle the SMBus protocol are not supported. 28 29 The maximum SPI message size supported by SC18IS602/603 is 200 bytes. Attempts 30 to initiate longer transfers will fail with -EINVAL. EEPROM read operations and 31 similar large accesses have to be split into multiple chunks of no more than 32 200 bytes per SPI message (128 bytes of data per message is recommended). This 33 means that programs such as "cp" or "od", which automatically use large block 34 sizes to access a device, can not be used directly to read data from EEPROM. 35 Programs such as dd, where the block size can be specified, should be used 36 instead.