Why does the HPS SPI Master fail when slave select is mapped to GPIO? - Why does the HPS SPI Master fail when slave select is mapped to GPIO? Description Due to a problem with the SPI IP linux driver (spi-dw.c) in linux-socfpga kernel 4.1.22-ltsi, the SPI IP will fail to operate if slave select is routed to GPIO with the cs-gpios entry in device tree. Resolution This problem is fixed in the linux-socfpga-linux kernel 4.1.33-ltsi. GIT location: https://github.com/altera-opensource/linux-socfpga Precompiled version on Rocketboards.org: https://rocketboards.org/foswiki/Documentation/GSRD170ReleaseNotes Custom Fields values: ['novalue'] Troubleshooting FB: 460789; False ['novalue'] ['FPGA Dev Tools Quartus® Prime Software Pro'] 17.0 15.0 ['Arria® V ST FPGA', 'Arria® V SX FPGA', 'Cyclone® V E FPGA', 'Cyclone® V FPGAs and SoCs', 'Cyclone® V GT FPGA', 'Cyclone® V SE FPGA', 'Cyclone® V ST FPGA'] ['novalue'] ['novalue'] ['novalue']