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
