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Message-ID: <bfec6388-bb84-f053-18b3-a0ef556b5f97@canonical.com>
Date: Wed, 9 Mar 2022 10:34:27 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
To: Brian Norris <briannorris@...omium.org>,
MyungJoo Ham <myungjoo.ham@...sung.com>,
Kyungmin Park <kyungmin.park@...sung.com>,
Chanwoo Choi <cw00.choi@...sung.com>,
Rob Herring <robh+dt@...nel.org>,
Heiko Stuebner <heiko@...ech.de>
Cc: Derek Basehore <dbasehore@...omium.org>,
devicetree@...r.kernel.org, linux-rockchip@...ts.infradead.org,
linux-kernel@...r.kernel.org, Lin Huang <hl@...k-chips.com>,
linux-arm-kernel@...ts.infradead.org, linux-pm@...r.kernel.org
Subject: Re: [PATCH v4 01/15] dt-bindings: devfreq: rk3399_dmc: Convert to
YAML
On 08/03/2022 20:08, 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: Krzysztof Kozlowski <krzysztof.kozlowski@...onical.com>
Best regards,
Krzysztof
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