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    SubjectRe: [PATCH 0/3] fpga: xilinx-selectmap: add new driver
    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

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