Re: bf537 SPI Bus: To use Kernel, Userspace, or Bitbang control

Discussion created by Aaronwu Employee on Mar 19, 2013
Branched from an earlier discussion

There is no strict standards for the SPI baudrate, theoretically it would work, you are going to have a try. Assign the baudrate you want in the board file.


If you are going to use GPIO as the chip select, take a look at the following code line in arch/blackfin/mach-bf537/boards/stamp.c as example:

.chip_select = GPIO_PF10 + MAX_CTRL_CS, /* GPIO controlled SSEL */

and it's implementation is in function bfin_spi_cs_active in spi-bfin5xx.c