linux-kernel - Re: [PATCH v2 0/4] clk: ralink: make system controller a reset provider

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Message-ID: <CAMhs-H_h9=sj5_p58WcqrYJuT-CGHp38xELwD1jvt=XzfvG2bw@mail.gmail.com>
Date:   Sun, 17 Oct 2021 08:51:24 +0200
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     Stephen Boyd <sboyd@...nel.org>
Cc:     "open list:COMMON CLK FRAMEWORK" <linux-clk@...r.kernel.org>,
        Greg KH <gregkh@...uxfoundation.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, Rob Herring <robh+dt@...nel.org>,
        linux-staging@...ts.linux.dev, NeilBrown <neil@...wn.name>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        John Crispin <john@...ozen.org>
Subject: Re: [PATCH v2 0/4] clk: ralink: make system controller a reset provider

Hi Stephen,

On Wed, Oct 6, 2021 at 1:23 PM Sergio Paracuellos
<sergio.paracuellos@...il.com> wrote:
>
> Hi all,
>
> This patch series add minimal change to provide mt7621 resets properly
> defining them in the 'mediatek,mt7621-sysc' node which is the system
> controller of the SoC and is already providing clocks to the rest of
> the world.
>
> There is shared architecture code for all ralink platforms in 'reset.c'
> file located in 'arch/mips/ralink' but the correct thing to do to align
> hardware with software seems to define and add related reset code to the
> already mainlined clock driver.
>
> After this changes, we can get rid of the useless reset controller node
> in the device tree and use system controller node instead where the property
> '#reset-cells' has been added. Binding documentation for this nodeq has
> been updated with the new property accordly.
>
> This series also provide a bindings include header where all related
> reset bits for the MT7621 SoC are defined.
>
> Also, please take a look to this review [0] to understand better motivation
> for this series.
>
> Thanks in advance for your feedback.
>
> Changes in v2:
>  - Address review comments of Dan Carpenter [1]:
>     + Avoid 'inline' in function definition.
>     + Return proper error codes (-EINVAL) instead of '-1'.
>     + Make use of 'devm_kzalloc' instead of 'kzalloc'.

Can you please take a look into this series? I'd like them to be added
in the next merge window and if something needs to be changed I'd like
to have a bit of time to do it :)).

Regarding how to merge this I guess all of the patches should apply
cleanly in any tree but since there are already changes in mt7621-dts
maybe patches 1 and 4 which are related can go through the staging
tree (if Greg is ok with this) and the bindings doc change and driver
changes (patches 2 and 3) can go through your tree.

Thanks in advance for your time.

Best regards,
    Sergio Paracuellos

>
> Best regards,
>     Sergio Paracuellos
>
> [0]: https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20210926145931.14603-3-sergio.paracuellos@gmail.com/
> [1]: https://lkml.org/lkml/2021/10/6/204
>
> Sergio Paracuellos (4):
>   dt-bindings: reset: add dt binding header for Mediatek MT7621 resets
>   dt-bindings: clock: mediatek,mt7621-sysc: add '#reset-cells' property
>   clk: ralink: make system controller node a reset provider
>   staging: mt7621-dts: align resets with binding documentation
>
>  .../bindings/clock/mediatek,mt7621-sysc.yaml  | 12 +++
>  drivers/clk/ralink/clk-mt7621.c               | 79 +++++++++++++++++++
>  drivers/staging/mt7621-dts/mt7621.dtsi        | 27 +++----
>  include/dt-bindings/reset/mt7621-reset.h      | 37 +++++++++
>  4 files changed, 140 insertions(+), 15 deletions(-)
>  create mode 100644 include/dt-bindings/reset/mt7621-reset.h
>
> --
> 2.33.0
>