linux-kernel - Re: [PATCH v8 0/7] clk/resets: baikal-t1: Add DDR/PCIe resets and xGMAC/SATA fixes

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Date:   Fri, 15 Jul 2022 14:51:24 +0300
From:   Serge Semin <fancer.lancer@...il.com>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Michael Turquette <mturquette@...libre.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        linux-clk@...r.kernel.org, linux-mips@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v8 0/7] clk/resets: baikal-t1: Add DDR/PCIe resets and
 xGMAC/SATA fixes

Ping!

On Tue, Jul 12, 2022 at 03:16:16PM +0300, Serge Semin wrote:
> Hi @Stephen.
> 
> Philipp has completed the reset-related patches review. Could you
> please merge the series in so it would make it into the kernel v5.20?
> 
> -Sergey
> 
> On Tue, Jul 12, 2022 at 03:14:58PM +0300, Serge Semin wrote:
> > Folks! It has been over four months since the first series submission for
> > review. Please merge it in.
> > 
> > Short summary regarding this patchset. The series starts from fixing of
> > the clocks glitching cause by the Renesas 5P49V6901 chip in some
> > circumstances. Afterwards a few more modifications are introduced to
> > finally finish the Baikal-T1 CCU unit support up and prepare the code
> > before adding the Baikal-T1 PCIe/xGMAC support. First of all it turned out
> > I specified wrong DW xGMAC PTP reference clock divider in my initial
> > patches. It must be 8, not 10. Secondly I was wrong to add a joint xGMAC
> > Ref and PTP clock instead of having them separately defined.  The SoC
> > manual describes these clocks as separate fixed clock wrappers. Finally
> > in order to close the SoC clock/reset support up we need to add the DDR
> > and PCIe interfaces reset controls support. It's done in two steps. First
> > I've moved the reset-controls-related code into a dedicated module. Then
> > the DDR/PCIe reset-control functionality is added. As the series
> > finalization we've decided to convert the Baikal-T1 clock/reset source
> > drivers to mainly being the platform device driver and pre-initialize the
> > basic clocks only at the early kernel boot stages.
> > 
> > Link: https://lore.kernel.org/linux-pci/20220324010905.15589-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v2:
> > - Resubmit the series with adding @Philipp to the list of the recipients.
> > 
> > Link: https://lore.kernel.org/linux-pci/20220330144320.27039-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v3:
> > - No comments. Just resend the series.
> > - Rebased from v5.17 onto v5.18-rc3.
> > 
> > Link: https://lore.kernel.org/linux-clk/20220503205722.24755-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v4:
> > - Completely split the CCU Dividers and Resets functionality up. (@Stephen)
> > - Add a new fixes patch: "clk: baikal-t1: Actually enable SATA internal
> >   ref clock".
> > - Add a new fixes patch: "reset: Fix devm bulk optional exclusive control
> >   getter".
> > - Add a new fixes patch: "clk: vc5: Fix 5P49V6901 outputs disabling when
> >   enabling FOD".
> > - Add a new feagure patch: "clk: baikal-t1: Convert to platform device
> >   driver".
> > - Change the internal clock ID to the XGMAC-referred name.
> > - Rebase onto the kernel v5.18.
> > 
> > Link: https://lore.kernel.org/lkml/20220610072124.8714-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v5:
> > - Just resend.
> > - Rebase onto the kernel v5.19-rcX.
> > 
> > Link: https://lore.kernel.org/linux-clk/20220624141853.7417-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v6:
> > - Drop the patch
> >   [PATCH RESEND v5 1/8] reset: Fix devm bulk optional exclusive control getter
> >   since it has already been accepted by @Philipp.
> > - Refactor the reset-control code to support the linear reset IDs only.
> >   (@Philipp)
> > - Combine the reset-related code into a single file. (@Philipp)
> > - Drop CCU_DIV_RST_MAP() macro. It's no longer used.
> > 
> > Link: https://lore.kernel.org/linux-clk/20220708192725.9501-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v7:
> > - Fix "Alignment should match open parenthesis" warning for the
> >   pr_err() method invocations. (@Philipp)
> > - Drop empty line from the sys_rst_info structure initialization block.
> >   (@Philipp)
> > 
> > Link: https://lore.kernel.org/linux-clk/20220711154433.15415-1-Sergey.Semin@baikalelectronics.ru/
> > Changelog v8:
> > - Fix "sef-deasserted" spelling in the CLK_BT1_CCU_RST config help
> >   text. (@Randy)
> > 
> > Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> > Cc: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
> > Cc: Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>
> > Cc: Thomas Bogendoerfer <tsbogend@...ha.franken.de>
> > Cc: linux-clk@...r.kernel.org
> > Cc: linux-mips@...r.kernel.org
> > Cc: linux-kernel@...r.kernel.org
> > 
> > Serge Semin (7):
> >   clk: vc5: Fix 5P49V6901 outputs disabling when enabling FOD
> >   clk: baikal-t1: Fix invalid xGMAC PTP clock divider
> >   clk: baikal-t1: Add shared xGMAC ref/ptp clocks internal parent
> >   clk: baikal-t1: Add SATA internal ref clock buffer
> >   clk: baikal-t1: Move reset-controls code into a dedicated module
> >   clk: baikal-t1: Add DDR/PCIe directly controlled resets support
> >   clk: baikal-t1: Convert to platform device driver
> > 
> >  drivers/clk/baikal-t1/Kconfig       |  12 +-
> >  drivers/clk/baikal-t1/Makefile      |   1 +
> >  drivers/clk/baikal-t1/ccu-div.c     |  84 +++++++--
> >  drivers/clk/baikal-t1/ccu-div.h     |  17 +-
> >  drivers/clk/baikal-t1/ccu-pll.h     |   8 +
> >  drivers/clk/baikal-t1/ccu-rst.c     | 217 +++++++++++++++++++++++
> >  drivers/clk/baikal-t1/ccu-rst.h     |  67 +++++++
> >  drivers/clk/baikal-t1/clk-ccu-div.c | 263 ++++++++++++++++------------
> >  drivers/clk/baikal-t1/clk-ccu-pll.c | 128 +++++++++++---
> >  drivers/clk/clk-versaclock5.c       |   2 +-
> >  include/dt-bindings/reset/bt1-ccu.h |   9 +
> >  11 files changed, 647 insertions(+), 161 deletions(-)
> >  create mode 100644 drivers/clk/baikal-t1/ccu-rst.c
> >  create mode 100644 drivers/clk/baikal-t1/ccu-rst.h
> > 
> > -- 
> > 2.35.1
> >