linux-kernel - Re: [PATCH 00/21] ata: ahci: Add DWC/Baikal-T1 AHCI SATA support

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Date:   Tue, 29 Mar 2022 05:06:03 +0900
From:   Damien Le Moal <damien.lemoal@...nsource.wdc.com>
To:     Serge Semin <Sergey.Semin@...kalelectronics.ru>,
        Hans de Goede <hdegoede@...hat.com>,
        Jens Axboe <axboe@...nel.dk>
Cc:     Serge Semin <fancer.lancer@...il.com>,
        Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>,
        Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>,
        Rob Herring <robh+dt@...nel.org>, linux-ide@...r.kernel.org,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH 00/21] ata: ahci: Add DWC/Baikal-T1 AHCI SATA support

On 3/24/22 09:16, Serge Semin wrote:
[...]
> After the denoted above functionality is added we can finally introduce
> the Baikal-T1 AHCI SATA controller support into the DWC AHCI SATA driver.
> The controller is based on the DWC AHCI SATA IP-core v4.10a and can work
> well with the generic DWC AHCI driver. The only peculiarity of it is
> connected with the SATA Ports reference clock source. It can be supplied
> either from the internal SoC PLL or from the chip pads. Currently we have
> to prefer selecting the signal coming from the pads if the corresponding
> clock source is specified because the link doesn't get stably established
> when the internal clock signal is activated. In addition the platform has
> trigger-based reset signals so the corresponding flag must be passed to
> the generic AHCI-resource getter.
> 

I am assuming this is "v2" of your patches. Please add this version number
to your patch titles ("[PATCH v2]") and add a changelog here in the cover
letter.

> Signed-off-by: Serge Semin <Sergey.Semin@...kalelectronics.ru>
> Cc: Alexey Malahov <Alexey.Malahov@...kalelectronics.ru>
> Cc: Pavel Parkhomenko <Pavel.Parkhomenko@...kalelectronics.ru>
> Cc: Rob Herring <robh+dt@...nel.org>
> Cc: linux-ide@...r.kernel.org
> Cc: linux-kernel@...r.kernel.org
> Cc: devicetree@...r.kernel.org
> 
> Serge Semin (21):
>   dt-bindings: ata: sata: Extend number of SATA ports
>   dt-bindings: ata: Convert AHCI-bindings to DT schema
>   ata: libahci_platform: Explicitly set rc on devres_alloc failure
>   ata: libahci_platform: Convert to using handy devm-ioremap methods
>   ata: libahci_platform: Convert to using devm bulk clocks API
>   ata: libahci_platform: Add function returning a clock-handle by id
>   ata: libahci_platform: Sanity check the DT child nodes number
>   ata: libahci_platform: Parse ports-implemented property in resources
>     getter
>   ata: libahci_platform: Introduce reset assertion/deassertion methods
>   dt-bindings: ata: ahci: Add platform capability properties
>   ata: libahci: Extend port-cmd flags set with port capabilities
>   ata: libahci: Discard redundant force_port_map parameter
>   ata: libahci: Don't read AHCI version twice in the save-config method
>   ata: ahci: Convert __ahci_port_base to accepting hpriv as arguments
>   ata: ahci: Introduce firmware-specific caps initialization
>   dt-bindings: ata: ahci: Add DWC AHCI SATA controller DT schema
>   ata: ahci: Add DWC AHCI SATA controller support
>   dt-bindings: ata: ahci: Add Baikal-T1 AHCI SATA controller DT schema
>   ata: ahci-dwc: Add platform-specific quirks support
>   ata: ahci-dwc: Add Baikal-T1 AHCI SATA interface support
>   MAINTAINERS: Add maintainers for DWC AHCI SATA driver
> 
>  .../devicetree/bindings/ata/ahci-common.yaml  | 176 ++++++
>  .../devicetree/bindings/ata/ahci-platform.txt |  79 ---
>  .../bindings/ata/baikal,bt1-ahci.yaml         | 132 +++++
>  .../devicetree/bindings/ata/generic-ahci.yaml |  98 ++++
>  .../devicetree/bindings/ata/sata-common.yaml  |   7 +-
>  .../bindings/ata/snps,dwc-ahci.yaml           | 121 ++++
>  MAINTAINERS                                   |   9 +
>  drivers/ata/Kconfig                           |  11 +
>  drivers/ata/Makefile                          |   1 +
>  drivers/ata/ahci.c                            |   4 +-
>  drivers/ata/ahci.h                            |  21 +-
>  drivers/ata/ahci_dwc.c                        | 525 ++++++++++++++++++
>  drivers/ata/ahci_mtk.c                        |   2 -
>  drivers/ata/ahci_platform.c                   |   5 -
>  drivers/ata/ahci_st.c                         |   3 -
>  drivers/ata/libahci.c                         |  63 ++-
>  drivers/ata/libahci_platform.c                | 234 +++++---
>  include/linux/ahci_platform.h                 |   8 +-
>  18 files changed, 1321 insertions(+), 178 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/ata/ahci-common.yaml
>  delete mode 100644 Documentation/devicetree/bindings/ata/ahci-platform.txt
>  create mode 100644 Documentation/devicetree/bindings/ata/baikal,bt1-ahci.yaml
>  create mode 100644 Documentation/devicetree/bindings/ata/generic-ahci.yaml
>  create mode 100644 Documentation/devicetree/bindings/ata/snps,dwc-ahci.yaml
>  create mode 100644 drivers/ata/ahci_dwc.c
> 


-- 
Damien Le Moal
Western Digital Research