On Feb 2, 2024, at 3:16 PM, Rob Herring robh@xxxxxxxxxx wrote: > On Wed, Jan 31, 2024 at 06:05:30PM -0500, Charles Perry wrote: >> Hello, >> >> This patchset adds a new driver for the 7 series FPGA's SelectMAP >> interface. >> >> The SelectMAP interface shares a common GPIO protocol with the SPI >> interface which is already in the kernel (drivers/fpga/xilinx-spi.c). >> The approach proposed in this patchset is to refactor xilinx-spi.c into >> xilinx-core.c which would handle the common GPIO protocol. This is then >> used to build two drivers, the already existing xilinx-spi.c driver and >> a newly added xilinx-selectmap.c driver. >> >> The SelectMAP driver proposed only supports 8 bit mode. This is because >> the 16 and 32 bits mode have limitations with regards to compressed >> bitstream support as well as introducing endianness considerations. >> >> I'm testing xilinx-selectmap.c on a custom i.MX6 board connected to an >> Artix 7 FPGA. Flashing a 913K bitstream takes 0.44 seconds. >> >> v2: From Krzysztof Kozlowski review's: >> * Use more conventional names for gpio DT bindings >> * fix example in DT bindings >> * add mc-peripheral-props.yaml to DT bindings >> * fix various formatting mistakes >> * Remove all occurences of the "slave" word. > > Please label the series with the version number and don't send new > versions as replies to the previous version. > > Rob Ok, will do. Regards, Charles
