Re: [PATCH 00/10] spi: Adding support for Microchip Sparx5 SoC

[Serge Semin]

On Tue, Jun 02, 2020 at 10:18:28AM +0200, Lars Povlsen wrote:
> 
> Serge Semin writes:
> 
> > Hello Lars,
> >
> > On Wed, May 13, 2020 at 04:00:21PM +0200, Lars Povlsen wrote:
> >> This is an add-on series to the main SoC Sparx5 series
> >> (Message-ID: <20200513125532.24585-1-lars.povlsen@xxxxxxxxxxxxx>).
> >>
> >> The series add support for Sparx5 on top of the existing
> >> ocelot/jaguar2 spi driver.
> >>
> >> It spins off the existing support for the MSCC platforms into a
> >> separate driver, as adding new platforms from the MSCC/Microchip
> >> product lines will further complicate (clutter) the original driver.
> >>
> >> New YAML dt-bindings are provided for the resulting driver.
> >>
> >> It is expected that the DT patches are to be taken directly by the arm-soc
> >> maintainers.
> >
> > Regarding our cooperation. It can be implemented as follows. Since your patchset
> > is less cumbersome than mine and is more ready to be integrated into the generic DW
> > APB SSI code, it would be better to first make it through Mark', Andy' and my reviews
> > to be further merged into the kernel version of the driver. After that I'll have
> > my code altered so it could be applied on top of your patches. When everything
> > is done we'll have a more comprehensive DW APB SSI driver with poll-based
> > PIO operations support, new features like rx-delay, etc.
> >
> 
> Hi Serge!
> 
> I think I would be able to work on the SPI patches this week. Should I
> base it on the current spi-next or 5.7? Then address the comments and
> send out a new revision?
> 
> Thanks for reaching out.

Sorry for a delay. I had to finish urgent tasks first. I'll give my review comments
shortly today.

-Sergey

> 
> ---Lars
> 
> > Thank you one more time for the series you've shared with us. Let's see what can
> > be done to improve it...
> >
> > -Sergey
> >
> >>
> >> Lars Povlsen (10):
> >>   spi: dw: Add support for polled operation via no IRQ specified in DT
> >>   spi: dw: Add support for RX sample delay register
> >>   spi: dw: Add support for client driver memory operations
> >>   dt-bindings: spi: Add bindings for spi-dw-mchp
> >>   spi: spi-dw-mmio: Spin off MSCC platforms into spi-dw-mchp
> >>   dt-bindings: spi: spi-dw-mchp: Add Sparx5 support
> >>   spi: spi-dw-mchp: Add Sparx5 support
> >>   arm64: dts: sparx5: Add SPI controller
> >>   arm64: dts: sparx5: Add spi-nor support
> >>   arm64: dts: sparx5: Add spi-nand devices
> >>
> >>  .../bindings/spi/mscc,ocelot-spi.yaml         |  89 ++++
> >>  .../bindings/spi/snps,dw-apb-ssi.txt          |   7 +-
> >>  MAINTAINERS                                   |   2 +
> >>  arch/arm64/boot/dts/microchip/sparx5.dtsi     |  37 ++
> >>  .../boot/dts/microchip/sparx5_pcb125.dts      |  16 +
> >>  .../boot/dts/microchip/sparx5_pcb134.dts      |  22 +
> >>  .../dts/microchip/sparx5_pcb134_board.dtsi    |   9 +
> >>  .../boot/dts/microchip/sparx5_pcb135.dts      |  23 +
> >>  .../dts/microchip/sparx5_pcb135_board.dtsi    |   9 +
> >>  arch/mips/configs/generic/board-ocelot.config |   2 +-
> >>  drivers/spi/Kconfig                           |   7 +
> >>  drivers/spi/Makefile                          |   1 +
> >>  drivers/spi/spi-dw-mchp.c                     | 399 ++++++++++++++++++
> >>  drivers/spi/spi-dw-mmio.c                     |  93 ----
> >>  drivers/spi/spi-dw.c                          |  31 +-
> >>  drivers/spi/spi-dw.h                          |   4 +
> >>  16 files changed, 644 insertions(+), 107 deletions(-)
> >>  create mode 100644 Documentation/devicetree/bindings/spi/mscc,ocelot-spi.yaml
> >>  create mode 100644 drivers/spi/spi-dw-mchp.c
> >>
> >> --
> >> 2.26.2
> >>
> >> _______________________________________________
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> >> linux-arm-kernel@xxxxxxxxxxxxxxxxxxx
> >> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
> 
> --
> Lars Povlsen,
> Microchip