linux-kernel - Re: [PATCH v4 01/15] dt-bindings: devfreq: rk3399

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Message-ID: <YipAo5zWp/MF0NW6@robh.at.kernel.org>
Date:   Thu, 10 Mar 2022 12:17:07 -0600
From:   Rob Herring <robh@...nel.org>
To:     Brian Norris <briannorris@...omium.org>
Cc:     linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        Rob Herring <robh+dt@...nel.org>,
        Heiko Stuebner <heiko@...ech.de>,
        linux-rockchip@...ts.infradead.org,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Lin Huang <hl@...k-chips.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Derek Basehore <dbasehore@...omium.org>,
        devicetree@...r.kernel.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 01/15] dt-bindings: devfreq: rk3399_dmc: Convert to
 YAML

On Tue, 08 Mar 2022 11:08:47 -0800, Brian Norris wrote:
> I want to add, deprecate, and bugfix some properties, as well as add the
> first users. This is easier with a proper schema.
> 
> The transformation is mostly straightforward, plus a few notable tweaks:
> 
>  * Renamed rockchip,dram_speed_bin to rockchip,ddr3_speed_bin. The
>    driver code and the example matched, but the description was
>    different. I went with the implementation. Note that this property is
>    also slated for deprecation/deletion in the subsequent patches.
> 
>  * Drop upthreshold and downdifferential properties from the example.
>    These were undocumented (so, wouldn't pass validation), but were
>    representing software properties (governor tweaks). I drop them from
>    the driver in subsequent patches.
> 
>  * Rename clock from pclk_ddr_mon to dmc_clk. The driver, DT example,
>    and all downstream users matched -- the binding definition was the
>    exception. Anyway, "dmc_clk" is a more appropriately generic name.
> 
>  * Choose a better filename and location (this is a memory controller).
> 
> Signed-off-by: Brian Norris <briannorris@...omium.org>
> ---
> 
> Changes in v4:
>  * Update .yaml to use more "default" entries, instead of free-form text
>  * s/phandle-array/phandle/
>  * Move to .../memory-controllers, update filename
> 
> Changes in v3:
>  * Add |maxItems| for devfreq-events
>  * Improve deprecation notes
> 
> Changes in v2:
>  * rename to 'memory-controller' in example
>  * place 'required' after properties
>  * drop superluous free-form references and repetitions of other
>    bindings
>  * fix for yamllint
> 
>  .../bindings/devfreq/rk3399_dmc.txt           | 212 ------------
>  .../rockchip,rk3399-dmc.yaml                  | 306 ++++++++++++++++++
>  2 files changed, 306 insertions(+), 212 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/devfreq/rk3399_dmc.txt
>  create mode 100644 Documentation/devicetree/bindings/memory-controllers/rockchip,rk3399-dmc.yaml
> 

Reviewed-by: Rob Herring <robh@...nel.org>