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[v20,0/4] Microchip Polarfire FPGA manager

Message ID 20220617134846.19859-1-i.bornyakov@metrotek.ru (mailing list archive)
Headers show
Series Microchip Polarfire FPGA manager | expand

Message

Ivan Bornyakov June 17, 2022, 1:48 p.m. UTC 
Add support to the FPGA manager for programming Microchip Polarfire
FPGAs over slave SPI interface with .dat formatted bitsream image.

Changelog:
  v1 -> v2: fix printk formating
  v2 -> v3:
   * replace "microsemi" with "microchip"
   * replace prefix "microsemi_fpga_" with "mpf_"
   * more sensible .compatible and .name strings
   * remove unused defines STATUS_SPI_VIOLATION and STATUS_SPI_ERROR
  v3 -> v4: fix unused variable warning
    Put 'mpf_of_ids' definition under conditional compilation, so it
    would not hang unused if CONFIG_OF is not enabled.
  v4 -> v5:
   * prefix defines with MPF_
   * mdelay() -> usleep_range()
   * formatting fixes
   * add DT bindings doc
   * rework fpga_manager_ops.write() to fpga_manager_ops.write_sg()
     We can't parse image header in write_init() because image header
     size is not known beforehand. Thus parsing need to be done in
     fpga_manager_ops.write() callback, but fpga_manager_ops.write()
     also need to be reenterable. On the other hand,
     fpga_manager_ops.write_sg() is called once. Thus, rework usage of
     write() callback to write_sg().
  v5 -> v6: fix patch applying
     I forgot to clean up unrelated local changes which lead to error on
     patch 0001-fpga-microchip-spi-add-Microchip-MPF-FPGA-manager.patch
     applying on vanilla kernel.
  v6 -> v7: fix binding doc to pass dt_binding_check
  v7 -> v8: another fix for dt_binding_check warning
  v8 -> v9:
   * add another patch to support bitstream offset in FPGA image buffer
   * rework fpga_manager_ops.write_sg() back to fpga_manager_ops.write()
   * move image header parsing from write() to write_init()
  v9 -> v10:
   * add parse_header() callback to fpga_manager_ops
   * adjust fpga_mgr_write_init[_buf|_sg]() for parse_header() usage
   * implement parse_header() in microchip-spi driver
  v10 -> v11: include missing unaligned.h to microchip-spi
     fix error: implicit declaration of function 'get_unaligned_le[16|32]'
  v11 -> v12:
   * microchip-spi: double read hw status, ignore first read, because it
     can be unreliable.
   * microchip-spi: remove sleep between status readings in
     poll_status_not_busy() to save a few seconds. Status is polled on
     every 16 byte writes - that is quite often, therefore
     usleep_range() accumulate to a considerable number of seconds.
  v12 -> v13:
   * fpga-mgr: separate fpga_mgr_parse_header_buf() from
     fpga_mgr_write_init_buf()
   * fpga-mgr: introduce FPGA_MGR_STATE_PARSE_HEADER and
     FPGA_MGR_STATE_PARSE_HEADER_ERR fpga_mgr_states
   * fpga-mgr: rename fpga_mgr_write_init_sg() to fpga_mgr_prepare_sg()
     and rework with respect to a new fpga_mgr_parse_header_buf()
   * fpga-mgr: rework write accounting in fpga_mgr_buf_load_sg() for
     better clarity
   * microchip-spi: rename MPF_STATUS_POLL_TIMEOUT to
     MPF_STATUS_POLL_RETRIES
   * microchip-spi: add comment about status reading quirk to
     mpf_read_status()
   * microchip-spi: rename poll_status_not_busy() to mpf_poll_status()
     and add comment.
   * microchip-spi: make if statement in mpf_poll_status() easier to
     read.
  v13 -> v14:
   * fpga-mgr: improvements from Xu Yilun in
      - fpga_mgr_parse_header_buf()
      - fpga_mgr_write_init_buf()
      - fpga_mgr_prepare_sg()
      - fpga_mgr_buf_load_sg()
   * fpga-mgr: add check for -EAGAIN from fpga_mgr_parse_header_buf()
     when called from fpga_mgr_buf_load_mapped()
   * microchip-spi: remove excessive cs_change from second spi_transfer
     in mpf_read_status()
   * microchip-spi: change type of components_size_start,
     bitstream_start, i from size_t to u32 in mpf_ops_parse_header()
  v14 -> v15: eliminate memcpy() in mpf_ops_write()
    Eliminate excessive memcpy() in mpf_ops_write() by using
    spi_sync_transfer() instead of spi_write().
  v15 -> v16:
   * microchip-spi: change back components_size_start and
     bitstream_start variables types to size_t, i - to u16 in
     mpf_ops_parse_header()
   * fpga-mgr: rename fpga_parse_header_buf() to
     fpga_parse_header_mapped(). It serves only mapped FPGA image now,
     adjust it accordingly.
   * fpga-mgr: separate fpga_mgr_parse_header_sg_first() and
     fpga_mgr_parse_header_sg() from fpga_mgr_prepare_sg()
  v16 -> v17:
   * fpga-mgr: return size of allocated header from
     fpga_mgr_parse_header_sg(), add `char **ret_buf` to function args
     to save pointer to allocated header. This allow us to call
     fpga_mgr_write_init_buf() with exact size of allocated header.
   * document parse_header() callback in fpga-mgr.rst
  v17 -> v18:
   * fpga-mgr: change back fpga_mgr_parse_header_sg() to return
     allocated buffer but set buffer size into output parameter
   * fpga-mgr: check returned pointer from krealloc for ZERO_OR_NULL_PTR
     in fpga_mgr_paese_header_sg() as krealloc may return ZERO_SIZE_PTR.
   * fpga-mgr: in fpga_mgr_prepare_sg() return fpga_mgr_write_init() on
     fast path only when both initial_header_size and parse_header() are
     not defined.
   * docs: fpga-mgr: a few rewords from Xu Yilun
  v18 -> v19:
   * microchip-spi: split multiple assignments on a single line in
     functions mpf_read_status() and mpf_ops_parse_header()
   * fpga-mgr: add braces {} around "else if" arm in
     fpga_mgr_prepare_sg()
   * fpga-mgr: don't reuse krealloc() arg in fpga_mgr_parse_header_sg().
     If krealloc() returns NULL, it doesn't free the original.
  v19 -> v20:
   * fpga-mgr: initialize info->header_size with
     mops->initial_header_size at fpga_mgr_load().
   * fpga-mgr: add mops->skip_header boolean flag. Adjust skipping
     header before write to check against skip_header flag instead of
     mere presence of info->header_size.
   * fpga-mgr: split check for ZERO_OR_NULL_PTR() after realloc() in
     fpga_mgr_parse_header_sg() function to check against zero header +
     check against NULL returned from realloc().
   * docs: fpga-mgr: adjust for skip_header flag.
   * microchip-spi: add skip_header to mpf_ops.

Ivan Bornyakov (4):
  fpga: fpga-mgr: support bitstream offset in image buffer
  docs: fpga: mgr: document parse_header() callback
  fpga: microchip-spi: add Microchip MPF FPGA manager
  dt-bindings: fpga: add binding doc for microchip-spi fpga mgr

 .../fpga/microchip,mpf-spi-fpga-mgr.yaml      |  44 ++
 Documentation/driver-api/fpga/fpga-mgr.rst    |  27 +-
 drivers/fpga/Kconfig                          |   8 +
 drivers/fpga/Makefile                         |   1 +
 drivers/fpga/fpga-mgr.c                       | 236 +++++++++--
 drivers/fpga/microchip-spi.c                  | 398 ++++++++++++++++++
 include/linux/fpga/fpga-mgr.h                 |  22 +-
 7 files changed, 703 insertions(+), 33 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
 create mode 100644 drivers/fpga/microchip-spi.c

Comments

Conor Dooley June 19, 2022, 6:39 p.m. UTC | #1 
On 17/06/2022 14:48, Ivan Bornyakov wrote:
> EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> 
> Add support to the FPGA manager for programming Microchip Polarfire
> FPGAs over slave SPI interface with .dat formatted bitsream image.

btw Ivan,
Do we want to create a maintainers entry for this?
I am happy to either:
- Create a new entry with whatever combination of ourselves as
  maintainers/reviewers.
- Or if you don't want to take that on, you can add the driver
  to the existing PolarFire SoC MAINTAINERS entry probably with
  a rename to "RISC-V/MICROCHIP FPGA SUPPORT" or similar.

Or if you have another suggestion, lmk!
Thanks,
Conor.

> 
> Changelog:
>   v1 -> v2: fix printk formating
>   v2 -> v3:
>    * replace "microsemi" with "microchip"
>    * replace prefix "microsemi_fpga_" with "mpf_"
>    * more sensible .compatible and .name strings
>    * remove unused defines STATUS_SPI_VIOLATION and STATUS_SPI_ERROR
>   v3 -> v4: fix unused variable warning
>     Put 'mpf_of_ids' definition under conditional compilation, so it
>     would not hang unused if CONFIG_OF is not enabled.
>   v4 -> v5:
>    * prefix defines with MPF_
>    * mdelay() -> usleep_range()
>    * formatting fixes
>    * add DT bindings doc
>    * rework fpga_manager_ops.write() to fpga_manager_ops.write_sg()
>      We can't parse image header in write_init() because image header
>      size is not known beforehand. Thus parsing need to be done in
>      fpga_manager_ops.write() callback, but fpga_manager_ops.write()
>      also need to be reenterable. On the other hand,
>      fpga_manager_ops.write_sg() is called once. Thus, rework usage of
>      write() callback to write_sg().
>   v5 -> v6: fix patch applying
>      I forgot to clean up unrelated local changes which lead to error on
>      patch 0001-fpga-microchip-spi-add-Microchip-MPF-FPGA-manager.patch
>      applying on vanilla kernel.
>   v6 -> v7: fix binding doc to pass dt_binding_check
>   v7 -> v8: another fix for dt_binding_check warning
>   v8 -> v9:
>    * add another patch to support bitstream offset in FPGA image buffer
>    * rework fpga_manager_ops.write_sg() back to fpga_manager_ops.write()
>    * move image header parsing from write() to write_init()
>   v9 -> v10:
>    * add parse_header() callback to fpga_manager_ops
>    * adjust fpga_mgr_write_init[_buf|_sg]() for parse_header() usage
>    * implement parse_header() in microchip-spi driver
>   v10 -> v11: include missing unaligned.h to microchip-spi
>      fix error: implicit declaration of function 'get_unaligned_le[16|32]'
>   v11 -> v12:
>    * microchip-spi: double read hw status, ignore first read, because it
>      can be unreliable.
>    * microchip-spi: remove sleep between status readings in
>      poll_status_not_busy() to save a few seconds. Status is polled on
>      every 16 byte writes - that is quite often, therefore
>      usleep_range() accumulate to a considerable number of seconds.
>   v12 -> v13:
>    * fpga-mgr: separate fpga_mgr_parse_header_buf() from
>      fpga_mgr_write_init_buf()
>    * fpga-mgr: introduce FPGA_MGR_STATE_PARSE_HEADER and
>      FPGA_MGR_STATE_PARSE_HEADER_ERR fpga_mgr_states
>    * fpga-mgr: rename fpga_mgr_write_init_sg() to fpga_mgr_prepare_sg()
>      and rework with respect to a new fpga_mgr_parse_header_buf()
>    * fpga-mgr: rework write accounting in fpga_mgr_buf_load_sg() for
>      better clarity
>    * microchip-spi: rename MPF_STATUS_POLL_TIMEOUT to
>      MPF_STATUS_POLL_RETRIES
>    * microchip-spi: add comment about status reading quirk to
>      mpf_read_status()
>    * microchip-spi: rename poll_status_not_busy() to mpf_poll_status()
>      and add comment.
>    * microchip-spi: make if statement in mpf_poll_status() easier to
>      read.
>   v13 -> v14:
>    * fpga-mgr: improvements from Xu Yilun in
>       - fpga_mgr_parse_header_buf()
>       - fpga_mgr_write_init_buf()
>       - fpga_mgr_prepare_sg()
>       - fpga_mgr_buf_load_sg()
>    * fpga-mgr: add check for -EAGAIN from fpga_mgr_parse_header_buf()
>      when called from fpga_mgr_buf_load_mapped()
>    * microchip-spi: remove excessive cs_change from second spi_transfer
>      in mpf_read_status()
>    * microchip-spi: change type of components_size_start,
>      bitstream_start, i from size_t to u32 in mpf_ops_parse_header()
>   v14 -> v15: eliminate memcpy() in mpf_ops_write()
>     Eliminate excessive memcpy() in mpf_ops_write() by using
>     spi_sync_transfer() instead of spi_write().
>   v15 -> v16:
>    * microchip-spi: change back components_size_start and
>      bitstream_start variables types to size_t, i - to u16 in
>      mpf_ops_parse_header()
>    * fpga-mgr: rename fpga_parse_header_buf() to
>      fpga_parse_header_mapped(). It serves only mapped FPGA image now,
>      adjust it accordingly.
>    * fpga-mgr: separate fpga_mgr_parse_header_sg_first() and
>      fpga_mgr_parse_header_sg() from fpga_mgr_prepare_sg()
>   v16 -> v17:
>    * fpga-mgr: return size of allocated header from
>      fpga_mgr_parse_header_sg(), add `char **ret_buf` to function args
>      to save pointer to allocated header. This allow us to call
>      fpga_mgr_write_init_buf() with exact size of allocated header.
>    * document parse_header() callback in fpga-mgr.rst
>   v17 -> v18:
>    * fpga-mgr: change back fpga_mgr_parse_header_sg() to return
>      allocated buffer but set buffer size into output parameter
>    * fpga-mgr: check returned pointer from krealloc for ZERO_OR_NULL_PTR
>      in fpga_mgr_paese_header_sg() as krealloc may return ZERO_SIZE_PTR.
>    * fpga-mgr: in fpga_mgr_prepare_sg() return fpga_mgr_write_init() on
>      fast path only when both initial_header_size and parse_header() are
>      not defined.
>    * docs: fpga-mgr: a few rewords from Xu Yilun
>   v18 -> v19:
>    * microchip-spi: split multiple assignments on a single line in
>      functions mpf_read_status() and mpf_ops_parse_header()
>    * fpga-mgr: add braces {} around "else if" arm in
>      fpga_mgr_prepare_sg()
>    * fpga-mgr: don't reuse krealloc() arg in fpga_mgr_parse_header_sg().
>      If krealloc() returns NULL, it doesn't free the original.
>   v19 -> v20:
>    * fpga-mgr: initialize info->header_size with
>      mops->initial_header_size at fpga_mgr_load().
>    * fpga-mgr: add mops->skip_header boolean flag. Adjust skipping
>      header before write to check against skip_header flag instead of
>      mere presence of info->header_size.
>    * fpga-mgr: split check for ZERO_OR_NULL_PTR() after realloc() in
>      fpga_mgr_parse_header_sg() function to check against zero header +
>      check against NULL returned from realloc().
>    * docs: fpga-mgr: adjust for skip_header flag.
>    * microchip-spi: add skip_header to mpf_ops.
> 
> Ivan Bornyakov (4):
>   fpga: fpga-mgr: support bitstream offset in image buffer
>   docs: fpga: mgr: document parse_header() callback
>   fpga: microchip-spi: add Microchip MPF FPGA manager
>   dt-bindings: fpga: add binding doc for microchip-spi fpga mgr
> 
>  .../fpga/microchip,mpf-spi-fpga-mgr.yaml      |  44 ++
>  Documentation/driver-api/fpga/fpga-mgr.rst    |  27 +-
>  drivers/fpga/Kconfig                          |   8 +
>  drivers/fpga/Makefile                         |   1 +
>  drivers/fpga/fpga-mgr.c                       | 236 +++++++++--
>  drivers/fpga/microchip-spi.c                  | 398 ++++++++++++++++++
>  include/linux/fpga/fpga-mgr.h                 |  22 +-
>  7 files changed, 703 insertions(+), 33 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
>  create mode 100644 drivers/fpga/microchip-spi.c
> 
> --
> 2.25.1
> 
>
Ivan Bornyakov June 20, 2022, 10:07 a.m. UTC | #2 
On Sun, Jun 19, 2022 at 06:39:28PM +0000, Conor.Dooley@microchip.com wrote:
> On 17/06/2022 14:48, Ivan Bornyakov wrote:
> > EXTERNAL EMAIL: Do not click links or open attachments unless you know the content is safe
> > 
> > Add support to the FPGA manager for programming Microchip Polarfire
> > FPGAs over slave SPI interface with .dat formatted bitsream image.
> 
> btw Ivan,
> Do we want to create a maintainers entry for this?
> I am happy to either:
> - Create a new entry with whatever combination of ourselves as
>   maintainers/reviewers.
> - Or if you don't want to take that on, you can add the driver
>   to the existing PolarFire SoC MAINTAINERS entry probably with
>   a rename to "RISC-V/MICROCHIP FPGA SUPPORT" or similar.
> 
> Or if you have another suggestion, lmk!
> Thanks,
> Conor.
> 

Hi, Conor!

As there is no dedicated entries for any of FPGA manager drivers and
I have no access to any info that is not pablicly available, I would
suggest you to do the latter, i.e. to add the driver to the existing
PolarFire SoC MAINTAINERS entry, once this patch series accepted.

> > 
> > Changelog:
> >   v1 -> v2: fix printk formating
> >   v2 -> v3:
> >    * replace "microsemi" with "microchip"
> >    * replace prefix "microsemi_fpga_" with "mpf_"
> >    * more sensible .compatible and .name strings
> >    * remove unused defines STATUS_SPI_VIOLATION and STATUS_SPI_ERROR
> >   v3 -> v4: fix unused variable warning
> >     Put 'mpf_of_ids' definition under conditional compilation, so it
> >     would not hang unused if CONFIG_OF is not enabled.
> >   v4 -> v5:
> >    * prefix defines with MPF_
> >    * mdelay() -> usleep_range()
> >    * formatting fixes
> >    * add DT bindings doc
> >    * rework fpga_manager_ops.write() to fpga_manager_ops.write_sg()
> >      We can't parse image header in write_init() because image header
> >      size is not known beforehand. Thus parsing need to be done in
> >      fpga_manager_ops.write() callback, but fpga_manager_ops.write()
> >      also need to be reenterable. On the other hand,
> >      fpga_manager_ops.write_sg() is called once. Thus, rework usage of
> >      write() callback to write_sg().
> >   v5 -> v6: fix patch applying
> >      I forgot to clean up unrelated local changes which lead to error on
> >      patch 0001-fpga-microchip-spi-add-Microchip-MPF-FPGA-manager.patch
> >      applying on vanilla kernel.
> >   v6 -> v7: fix binding doc to pass dt_binding_check
> >   v7 -> v8: another fix for dt_binding_check warning
> >   v8 -> v9:
> >    * add another patch to support bitstream offset in FPGA image buffer
> >    * rework fpga_manager_ops.write_sg() back to fpga_manager_ops.write()
> >    * move image header parsing from write() to write_init()
> >   v9 -> v10:
> >    * add parse_header() callback to fpga_manager_ops
> >    * adjust fpga_mgr_write_init[_buf|_sg]() for parse_header() usage
> >    * implement parse_header() in microchip-spi driver
> >   v10 -> v11: include missing unaligned.h to microchip-spi
> >      fix error: implicit declaration of function 'get_unaligned_le[16|32]'
> >   v11 -> v12:
> >    * microchip-spi: double read hw status, ignore first read, because it
> >      can be unreliable.
> >    * microchip-spi: remove sleep between status readings in
> >      poll_status_not_busy() to save a few seconds. Status is polled on
> >      every 16 byte writes - that is quite often, therefore
> >      usleep_range() accumulate to a considerable number of seconds.
> >   v12 -> v13:
> >    * fpga-mgr: separate fpga_mgr_parse_header_buf() from
> >      fpga_mgr_write_init_buf()
> >    * fpga-mgr: introduce FPGA_MGR_STATE_PARSE_HEADER and
> >      FPGA_MGR_STATE_PARSE_HEADER_ERR fpga_mgr_states
> >    * fpga-mgr: rename fpga_mgr_write_init_sg() to fpga_mgr_prepare_sg()
> >      and rework with respect to a new fpga_mgr_parse_header_buf()
> >    * fpga-mgr: rework write accounting in fpga_mgr_buf_load_sg() for
> >      better clarity
> >    * microchip-spi: rename MPF_STATUS_POLL_TIMEOUT to
> >      MPF_STATUS_POLL_RETRIES
> >    * microchip-spi: add comment about status reading quirk to
> >      mpf_read_status()
> >    * microchip-spi: rename poll_status_not_busy() to mpf_poll_status()
> >      and add comment.
> >    * microchip-spi: make if statement in mpf_poll_status() easier to
> >      read.
> >   v13 -> v14:
> >    * fpga-mgr: improvements from Xu Yilun in
> >       - fpga_mgr_parse_header_buf()
> >       - fpga_mgr_write_init_buf()
> >       - fpga_mgr_prepare_sg()
> >       - fpga_mgr_buf_load_sg()
> >    * fpga-mgr: add check for -EAGAIN from fpga_mgr_parse_header_buf()
> >      when called from fpga_mgr_buf_load_mapped()
> >    * microchip-spi: remove excessive cs_change from second spi_transfer
> >      in mpf_read_status()
> >    * microchip-spi: change type of components_size_start,
> >      bitstream_start, i from size_t to u32 in mpf_ops_parse_header()
> >   v14 -> v15: eliminate memcpy() in mpf_ops_write()
> >     Eliminate excessive memcpy() in mpf_ops_write() by using
> >     spi_sync_transfer() instead of spi_write().
> >   v15 -> v16:
> >    * microchip-spi: change back components_size_start and
> >      bitstream_start variables types to size_t, i - to u16 in
> >      mpf_ops_parse_header()
> >    * fpga-mgr: rename fpga_parse_header_buf() to
> >      fpga_parse_header_mapped(). It serves only mapped FPGA image now,
> >      adjust it accordingly.
> >    * fpga-mgr: separate fpga_mgr_parse_header_sg_first() and
> >      fpga_mgr_parse_header_sg() from fpga_mgr_prepare_sg()
> >   v16 -> v17:
> >    * fpga-mgr: return size of allocated header from
> >      fpga_mgr_parse_header_sg(), add `char **ret_buf` to function args
> >      to save pointer to allocated header. This allow us to call
> >      fpga_mgr_write_init_buf() with exact size of allocated header.
> >    * document parse_header() callback in fpga-mgr.rst
> >   v17 -> v18:
> >    * fpga-mgr: change back fpga_mgr_parse_header_sg() to return
> >      allocated buffer but set buffer size into output parameter
> >    * fpga-mgr: check returned pointer from krealloc for ZERO_OR_NULL_PTR
> >      in fpga_mgr_paese_header_sg() as krealloc may return ZERO_SIZE_PTR.
> >    * fpga-mgr: in fpga_mgr_prepare_sg() return fpga_mgr_write_init() on
> >      fast path only when both initial_header_size and parse_header() are
> >      not defined.
> >    * docs: fpga-mgr: a few rewords from Xu Yilun
> >   v18 -> v19:
> >    * microchip-spi: split multiple assignments on a single line in
> >      functions mpf_read_status() and mpf_ops_parse_header()
> >    * fpga-mgr: add braces {} around "else if" arm in
> >      fpga_mgr_prepare_sg()
> >    * fpga-mgr: don't reuse krealloc() arg in fpga_mgr_parse_header_sg().
> >      If krealloc() returns NULL, it doesn't free the original.
> >   v19 -> v20:
> >    * fpga-mgr: initialize info->header_size with
> >      mops->initial_header_size at fpga_mgr_load().
> >    * fpga-mgr: add mops->skip_header boolean flag. Adjust skipping
> >      header before write to check against skip_header flag instead of
> >      mere presence of info->header_size.
> >    * fpga-mgr: split check for ZERO_OR_NULL_PTR() after realloc() in
> >      fpga_mgr_parse_header_sg() function to check against zero header +
> >      check against NULL returned from realloc().
> >    * docs: fpga-mgr: adjust for skip_header flag.
> >    * microchip-spi: add skip_header to mpf_ops.
> > 
> > Ivan Bornyakov (4):
> >   fpga: fpga-mgr: support bitstream offset in image buffer
> >   docs: fpga: mgr: document parse_header() callback
> >   fpga: microchip-spi: add Microchip MPF FPGA manager
> >   dt-bindings: fpga: add binding doc for microchip-spi fpga mgr
> > 
> >  .../fpga/microchip,mpf-spi-fpga-mgr.yaml      |  44 ++
> >  Documentation/driver-api/fpga/fpga-mgr.rst    |  27 +-
> >  drivers/fpga/Kconfig                          |   8 +
> >  drivers/fpga/Makefile                         |   1 +
> >  drivers/fpga/fpga-mgr.c                       | 236 +++++++++--
> >  drivers/fpga/microchip-spi.c                  | 398 ++++++++++++++++++
> >  include/linux/fpga/fpga-mgr.h                 |  22 +-
> >  7 files changed, 703 insertions(+), 33 deletions(-)
> >  create mode 100644 Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
> >  create mode 100644 drivers/fpga/microchip-spi.c
> > 
> > --
> > 2.25.1
> > 
> > 
>
Conor Dooley June 20, 2022, 10:57 a.m. UTC | #3 
I had a quick check in -next and there's an entry for the BMC
driver there.
How about the following? I put you as R, but clearly if you want to be
maintainer then you are *more than* qualified.
Feel free to edit the patch if so, either is fine by me.
You can tack this onto a v21 if you have more changes or I can resend
standalone once the driver is merged.

Thanks,
Conor.

From: Conor Dooley <conor.dooley@microchip.com>
Date: Mon, 20 Jun 2022 11:46:19 +0100
Subject: [PATCH] MAINTAINERS: add polarfire fpga programmer drivers
Add a MAINTAINERS entry for the newly added PolarFire (MPF) SPI slave
programming driver.

Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
---
 MAINTAINERS | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/MAINTAINERS b/MAINTAINERS
index 168e0af869a7..60ab3c4bf65d 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -7869,6 +7869,14 @@ S:	Maintained
 F:	Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
 F:	drivers/fpga/intel-m10-bmc-sec-update.c
 
+FPGA PolarFire Drivers
+M:	Conor Dooley <conor.dooley@microchip.com>
+R:	Ivan Bornyakov <i.bornyakov@metrotek.ru>
+L:	linux-fpga@vger.kernel.org
+S:	Supported
+F:	Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
+F:	drivers/fpga/microchip-spi.c
+
 FPU EMULATOR
 M:	Bill Metzenthen <billm@melbpc.org.au>
 S:	Maintained

base-commit: 07dc787be2316e243a16a33d0a9b734cd9365bd3
Conor Dooley June 20, 2022, 11:01 a.m. UTC | #4 
On 20/06/2022 11:57, Conor Dooley wrote:
> I had a quick check in -next and there's an entry for the BMC
> driver there.
> How about the following? I put you as R, but clearly if you want to be
> maintainer then you are *more than* qualified.
> Feel free to edit the patch if so, either is fine by me.
> You can tack this onto a v21 if you have more changes or I can resend
> standalone once the driver is merged.
> 
> Thanks,
> Conor.
> 
> From: Conor Dooley <conor.dooley@microchip.com>
> Date: Mon, 20 Jun 2022 11:46:19 +0100
> Subject: [PATCH] MAINTAINERS: add polarfire fpga programmer drivers> Add a MAINTAINERS entry for the newly added PolarFire (MPF) SPI slave
> programming driver.
> 
> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
> ---
>   MAINTAINERS | 8 ++++++++
>   1 file changed, 8 insertions(+)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 168e0af869a7..60ab3c4bf65d 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -7869,6 +7869,14 @@ S:	Maintained
>   F:	Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
>   F:	drivers/fpga/intel-m10-bmc-sec-update.c
>   
> +FPGA PolarFire Drivers

On second thoughts, "FPGA Microchip PolarFire Drivers"?

> +M:	Conor Dooley <conor.dooley@microchip.com>
> +R:	Ivan Bornyakov <i.bornyakov@metrotek.ru>
> +L:	linux-fpga@vger.kernel.org
> +S:	Supported
> +F:	Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
> +F:	drivers/fpga/microchip-spi.c
> +
>   FPU EMULATOR
>   M:	Bill Metzenthen <billm@melbpc.org.au>
>   S:	Maintained
> 
> base-commit: 07dc787be2316e243a16a33d0a9b734cd9365bd3
Ivan Bornyakov June 20, 2022, 6:01 p.m. UTC | #5 
On Mon, Jun 20, 2022 at 11:57:48AM +0100, Conor Dooley wrote:
> I had a quick check in -next and there's an entry for the BMC
> driver there.
> How about the following? I put you as R, but clearly if you want to be
> maintainer then you are *more than* qualified.
> Feel free to edit the patch if so, either is fine by me.
> You can tack this onto a v21 if you have more changes or I can resend
> standalone once the driver is merged.
> 
> Thanks,
> Conor.
> 
> From: Conor Dooley <conor.dooley@microchip.com>
> Date: Mon, 20 Jun 2022 11:46:19 +0100
> Subject: [PATCH] MAINTAINERS: add polarfire fpga programmer drivers
> Add a MAINTAINERS entry for the newly added PolarFire (MPF) SPI slave
> programming driver.
> 
> Signed-off-by: Conor Dooley <conor.dooley@microchip.com>
> ---
>  MAINTAINERS | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/MAINTAINERS b/MAINTAINERS
> index 168e0af869a7..60ab3c4bf65d 100644
> --- a/MAINTAINERS
> +++ b/MAINTAINERS
> @@ -7869,6 +7869,14 @@ S:	Maintained
>  F:	Documentation/ABI/testing/sysfs-driver-intel-m10-bmc-sec-update
>  F:	drivers/fpga/intel-m10-bmc-sec-update.c
>  
> +FPGA PolarFire Drivers
> +M:	Conor Dooley <conor.dooley@microchip.com>
> +R:	Ivan Bornyakov <i.bornyakov@metrotek.ru>
> +L:	linux-fpga@vger.kernel.org
> +S:	Supported
> +F:	Documentation/devicetree/bindings/fpga/microchip,mpf-spi-fpga-mgr.yaml
> +F:	drivers/fpga/microchip-spi.c
> +
>  FPU EMULATOR
>  M:	Bill Metzenthen <billm@melbpc.org.au>
>  S:	Maintained
> 
> base-commit: 07dc787be2316e243a16a33d0a9b734cd9365bd3
> -- 
> 2.36.1
> 

Ok, I'll add this to v21, but I'll wait for a review on fpga-mgr changes
first.