Hello, I'm working on a modular socfpga based system with several optional boards. Each optional board contain a board ID that can be read through a SPI bus.
Since we want just read the board ID, we used manually the sspi command, something like: => sspi 1:1.0 8 0 42 But it seems that the sspi command can't be used in a uboot script. sspi seems only used to manually test spi drivers. If we compare with i2c command, we have a i2c read to memory: i2c read chip address[.0, .1, .2] length memaddress - read to memory Why there is no such feature for spi ? Is there an interest to evolve the sspi command to add a read to memory? sspi <bus id>: <chip select>.<mode> <bit length> <data> <memaddress> By looking at existing code, it seems that hardware detection in uboot is handled by architecture/board specific code to set custom environment variable like "fpgatype" [1] or "unit_ident" "unit_serial" [2] (misc_init_r). What do you recommend? Implement a custom misc_init_r() for hardware detection? [1] https://gitlab.denx.de/u-boot/u-boot/blob/master/arch/arm/mach-socfpga/misc_gen5.c#L139 [2] https://gitlab.denx.de/u-boot/u-boot/blob/master/board/softing/vining_fpga/socfpga.c#L48 Best regards, Romain _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot