Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) ===========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) Kernel driver spi-sc18is602
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) ===========================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) Supported chips:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7)   * NXP SI18IS602/602B/603
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)     Datasheet: https://www.nxp.com/documents/data_sheet/SC18IS602_602B_603.pdf
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Author:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12)         Guenter Roeck <linux@roeck-us.net>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) Description
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) This driver provides connects a NXP SC18IS602/603 I2C-bus to SPI bridge to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) kernel's SPI core subsystem.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) The driver does not probe for supported chips, since the SI18IS602/603 does not
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) support Chip ID registers. You will have to instantiate the devices explicitly.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) Please see Documentation/i2c/instantiating-devices.rst for details.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) Usage Notes
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) -----------
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) This driver requires the I2C adapter driver to support raw I2C messages. I2C
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) adapter drivers which can only handle the SMBus protocol are not supported.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) The maximum SPI message size supported by SC18IS602/603 is 200 bytes. Attempts
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) to initiate longer transfers will fail with -EINVAL. EEPROM read operations and
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) similar large accesses have to be split into multiple chunks of no more than
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 200 bytes per SPI message (128 bytes of data per message is recommended). This
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) means that programs such as "cp" or "od", which automatically use large block
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) sizes to access a device, can not be used directly to read data from EEPROM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) Programs such as dd, where the block size can be specified, should be used
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) instead.