[GIT,PULL] FSI updates

Hi Greg !

There are a first round of updates of the FSI stack, aiming at reducing/removing
the gap with the OpenBMC tree and a first step in getting dependent drivers
upstream.

These changes significantly improve the FSI bitbanging driver performance
and reliability, and add the new "sbefifo" driver for communicating with
the POWER9 Self Boot Engine (which will be needed for some upcoming
additional drivers).

[ Apologies if I got part of the process wrong, I haven't
  sent a pull request in years ;-) ]

Cheers,
Ben.

The following changes since commit 8efcf34a263965e471e3999904f94d1f6799d42a:

  Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (2018-06-11 18:19:45 -0700)

are available in the Git repository at:

  https://git.kernel.org/pub/scm/linux/kernel/git/benh/linux-fsi.git 

for you to fetch changes up to 9f4a8a2d7f9d71093f41c4bb0ef8707e8145bad3:

  fsi/sbefifo: Add driver for the SBE FIFO (2018-06-12 14:05:39 +1000)

----------------------------------------------------------------
Andrew Jeffery (2):
      fsi: gpio: Trace busy count
      fsi: gpio: Remove unused 'id' variable

Benjamin Herrenschmidt (8):
      fsi/fsi-master-gpio: Sample input data on different clock phase
      fsi/fsi-master-gpio: Add "no-gpio-delays" option
      fsi/fsi-master-gpio: Reduce turnaround clocks
      fsi/fsi-master-gpio: Reduce dpoll clocks
      fsi/fsi-master-gpio: Delay sampling of FSI data input
      fsi/fsi-master-gpio: Implement CRC error recovery
      fsi/fsi-master-gpio: More error handling cleanup
      fsi/sbefifo: Add driver for the SBE FIFO

Eddie James (1):
      fsi: scom: Remove PIB reset during probe

Jeremy Kerr (4):
      fsi: gpio: Use a mutex to protect transfers
      fsi/gpio: Include command build in locked section
      fsi/gpio: Use relative-addressing commands
      fsi/master-gpio: Replace bit_bit lock with IRQ disable/enable

 arch/arm/boot/dts/aspeed-bmc-opp-romulus.dts     |    1 +
 arch/arm/boot/dts/aspeed-bmc-opp-witherspoon.dts |    1 +
 arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts       |    1 +
 drivers/fsi/Kconfig                              |    7 +
 drivers/fsi/Makefile                             |    1 +
 drivers/fsi/fsi-master-gpio.c                    |  349 +++++++++++++++++++++++++++--------
 drivers/fsi/fsi-sbefifo.c                        | 1005 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 drivers/fsi/fsi-scom.c                           |    8 -
 include/linux/fsi-sbefifo.h                      |   33 ++++
 include/trace/events/fsi_master_gpio.h           |   43 +++++
 10 files changed, 1362 insertions(+), 87 deletions(-)
 create mode 100644 drivers/fsi/fsi-sbefifo.c
 create mode 100644 include/linux/fsi-sbefifo.h

On Tue, Jun 12, 2018 at 02:14:25PM +1000, Benjamin Herrenschmidt wrote:
> Hi Greg !
> 
> There are a first round of updates of the FSI stack, aiming at reducing/removing
> the gap with the OpenBMC tree and a first step in getting dependent drivers
> upstream.
> 
> These changes significantly improve the FSI bitbanging driver performance
> and reliability, and add the new "sbefifo" driver for communicating with
> the POWER9 Self Boot Engine (which will be needed for some upcoming
> additional drivers).
> 
> [ Apologies if I got part of the process wrong, I haven't
>   sent a pull request in years ;-) ]

So, these are all for 4.19-rc1, right?  Not bugfixes for 4.18-final?

> The following changes since commit 8efcf34a263965e471e3999904f94d1f6799d42a:
> 
>   Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (2018-06-11 18:19:45 -0700)
> 
> are available in the Git repository at:
> 
>   https://git.kernel.org/pub/scm/linux/kernel/git/benh/linux-fsi.git 

I need a signed tag to pull from, not just a git tree, otherwise I don't
know that you really sent me what you think you sent me :)

Can you fix that up, and tell me where you want this to go and then I
can take it after 4.18-rc1 is out.

thanks,

greg k-h

On Tue, 2018-06-12 at 08:20 +0200, Greg Kroah-Hartman wrote:
> On Tue, Jun 12, 2018 at 02:14:25PM +1000, Benjamin Herrenschmidt wrote:
> > Hi Greg !
> > 
> > There are a first round of updates of the FSI stack, aiming at reducing/removing
> > the gap with the OpenBMC tree and a first step in getting dependent drivers
> > upstream.
> > 
> > These changes significantly improve the FSI bitbanging driver performance
> > and reliability, and add the new "sbefifo" driver for communicating with
> > the POWER9 Self Boot Engine (which will be needed for some upcoming
> > additional drivers).
> > 
> > [ Apologies if I got part of the process wrong, I haven't
> >   sent a pull request in years ;-) ]
> 
> So, these are all for 4.19-rc1, right?  Not bugfixes for 4.18-final?

The earlier the better as it reduces the diff with openbmc kernel tree
(with the goal of going down to 0) and simplify merging further new
stuff that depends on this. We are the only users of drivers/fsi so the
risk is for now at least nul. That said if you prefer queuing that up
for 4.19, that's ok (the patches were posted a little while ago, this
is just putting them in a git repo, nothing new since).

> > The following changes since commit 8efcf34a263965e471e3999904f94d1f6799d42a:
> > 
> >   Merge tag 'armsoc-late' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc (2018-06-11 18:19:45 -0700)
> > 
> > are available in the Git repository at:
> > 
> >   https://git.kernel.org/pub/scm/linux/kernel/git/benh/linux-fsi.git 
> 
> I need a signed tag to pull from, not just a git tree, otherwise I don't
> know that you really sent me what you think you sent me :)
> 
> Can you fix that up, and tell me where you want this to go and then I
> can take it after 4.18-rc1 is out.

Ah ok, I haven't done signed tags yet :-) Linus didn't require them
back in the day for kernel.org hosted trees. I'll look into it
tomorrow.

Cheers,
Ben.

> 
> thanks,
> 
> greg k-h