Date:   Tue, 3 Oct 2023 09:40:10 +0200
From:   Neil Armstrong <neil.armstrong@...aro.org>
To:     Rafał Miłecki <zajec5@...il.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
Cc:     Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Kevin Hilman <khilman@...libre.com>,
        Jerome Brunet <jbrunet@...libre.com>,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Hector Martin <marcan@...can.st>,
        Sven Peter <sven@...npeter.dev>,
        Alyssa Rosenzweig <alyssa@...enzweig.io>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Claudiu Beznea <claudiu.beznea@...on.dev>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>,
        Kunihiko Hayashi <hayashi.kunihiko@...ionext.com>,
        Masami Hiramatsu <mhiramat@...nel.org>,
        Vincent Shih <vincent.sunplus@...il.com>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        Christian Marangi <ansuelsmth@...il.com>,
        Anson Huang <Anson.Huang@....com>,
        Andrew-CT Chen <andrew-ct.chen@...iatek.com>,
        Lala Lin <lala.lin@...iatek.com>,
        Komal Bajaj <quic_kbajaj@...cinc.com>,
        Kumar Thella <sthella@...eaurora.org>,
        Keiji Hayashibara <hayashibara.keiji@...ionext.com>,
        linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-amlogic@...ts.infradead.org, asahi@...ts.linux.dev,
        linux-arm-msm@...r.kernel.org, linux-rockchip@...ts.infradead.org,
        linux-rtc@...r.kernel.org, linux-mediatek@...ts.infradead.org,
        Rafał Miłecki <rafal@...ecki.pl>
Subject: Re: [PATCH V2] dt-bindings: nvmem: move deprecated cells binding to
 its own file

On 03/10/2023 08:40, Rafał Miłecki wrote:
> From: Rafał Miłecki <rafal@...ecki.pl>
> 
> Support for old NVMEM fixed cells was deprecated in favour of
> "fixed-layout". It's still part of the nvmem.yaml though and may be
> unknowingly used by new bindings added without much of analyze.
> 
> To make it more difficult to accidentally support old syntax move its
> binding to separated file with "deprecated" in its name.
> 
> Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
> ---
> V2: Fix path to nvmem-deprecated-cells.yaml in amlogic,meson6-rtc.yaml
> 
>   .../devicetree/bindings/mtd/mtd.yaml          |  7 ++++-
>   .../bindings/mtd/partitions/nvmem-cells.yaml  |  1 +
>   .../nvmem/amlogic,meson-gxbb-efuse.yaml       |  1 +
>   .../bindings/nvmem/amlogic,meson6-efuse.yaml  |  1 +

For Amlogic/Meson bindings:
Acked-by: Neil Armstrong <neil.armstrong@...aro.org>

>   .../bindings/nvmem/apple,efuses.yaml          |  1 +
>   .../devicetree/bindings/nvmem/imx-ocotp.yaml  |  1 +
>   .../bindings/nvmem/mediatek,efuse.yaml        |  1 +
>   .../nvmem/microchip,sama7g5-otpc.yaml         |  1 +
>   .../devicetree/bindings/nvmem/mxs-ocotp.yaml  |  1 +
>   .../nvmem/nvmem-deprecated-cells.yaml         | 28 +++++++++++++++++++
>   .../devicetree/bindings/nvmem/nvmem.yaml      |  9 ------
>   .../bindings/nvmem/qcom,qfprom.yaml           |  1 +
>   .../bindings/nvmem/qcom,sec-qfprom.yaml       |  1 +
>   .../bindings/nvmem/qcom,spmi-sdam.yaml        |  1 +
>   .../bindings/nvmem/rockchip,otp.yaml          |  1 +
>   .../bindings/nvmem/rockchip-efuse.yaml        |  1 +
>   .../nvmem/socionext,uniphier-efuse.yaml       |  1 +
>   .../bindings/nvmem/sunplus,sp7021-ocotp.yaml  |  1 +
>   .../bindings/rtc/amlogic,meson6-rtc.yaml      |  1 +
>   19 files changed, 50 insertions(+), 10 deletions(-)
>   create mode 100644 Documentation/devicetree/bindings/nvmem/nvmem-deprecated-cells.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mtd/mtd.yaml b/Documentation/devicetree/bindings/mtd/mtd.yaml
> index b82ca03e969c..f322290ee516 100644
> --- a/Documentation/devicetree/bindings/mtd/mtd.yaml
> +++ b/Documentation/devicetree/bindings/mtd/mtd.yaml
> @@ -43,7 +43,12 @@ patternProperties:
>       deprecated: true
>   
>     "^otp(-[0-9]+)?$":
> -    $ref: ../nvmem/nvmem.yaml#
> +    type: object
> +
> +    allOf:
> +      - $ref: ../nvmem/nvmem.yaml#
> +      - $ref: ../nvmem/nvmem-deprecated-cells.yaml#
> +
>       unevaluatedProperties: false
>   
>       description: |
> diff --git a/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml b/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
> index 5474d63268dc..9518281007af 100644
> --- a/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
> +++ b/Documentation/devicetree/bindings/mtd/partitions/nvmem-cells.yaml
> @@ -19,6 +19,7 @@ maintainers:
>   allOf:
>     - $ref: /schemas/mtd/partitions/partition.yaml#
>     - $ref: /schemas/nvmem/nvmem.yaml#
> +  - $ref: /schemas/nvmem/nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/amlogic,meson-gxbb-efuse.yaml b/Documentation/devicetree/bindings/nvmem/amlogic,meson-gxbb-efuse.yaml
> index e49c2754ff55..9801fe6f91b5 100644
> --- a/Documentation/devicetree/bindings/nvmem/amlogic,meson-gxbb-efuse.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/amlogic,meson-gxbb-efuse.yaml
> @@ -11,6 +11,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/amlogic,meson6-efuse.yaml b/Documentation/devicetree/bindings/nvmem/amlogic,meson6-efuse.yaml
> index 84b3dfd21e09..b5cf740f96fa 100644
> --- a/Documentation/devicetree/bindings/nvmem/amlogic,meson6-efuse.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/amlogic,meson6-efuse.yaml
> @@ -12,6 +12,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/apple,efuses.yaml b/Documentation/devicetree/bindings/nvmem/apple,efuses.yaml
> index e0860b6b85f3..d3abdafdbca0 100644
> --- a/Documentation/devicetree/bindings/nvmem/apple,efuses.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/apple,efuses.yaml
> @@ -16,6 +16,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/imx-ocotp.yaml b/Documentation/devicetree/bindings/nvmem/imx-ocotp.yaml
> index 99e60d713dac..be1314454bec 100644
> --- a/Documentation/devicetree/bindings/nvmem/imx-ocotp.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/imx-ocotp.yaml
> @@ -16,6 +16,7 @@ description: |
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml b/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> index 7ec2988b597e..cf5f9e22bb7e 100644
> --- a/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/mediatek,efuse.yaml
> @@ -16,6 +16,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     $nodename:
> diff --git a/Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml b/Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml
> index a296d348adb4..cc25f2927682 100644
> --- a/Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/microchip,sama7g5-otpc.yaml
> @@ -16,6 +16,7 @@ description: |
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/mxs-ocotp.yaml b/Documentation/devicetree/bindings/nvmem/mxs-ocotp.yaml
> index a9b822aeaa7e..f43186f98607 100644
> --- a/Documentation/devicetree/bindings/nvmem/mxs-ocotp.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/mxs-ocotp.yaml
> @@ -11,6 +11,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/nvmem-deprecated-cells.yaml b/Documentation/devicetree/bindings/nvmem/nvmem-deprecated-cells.yaml
> new file mode 100644
> index 000000000000..951af28bbfb3
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/nvmem/nvmem-deprecated-cells.yaml
> @@ -0,0 +1,28 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/nvmem/nvmem-deprecated-cells.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: NVMEM old syntax for fixed cells
> +
> +maintainers:
> +  - Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
> +
> +description: |
> +  Before introducing NVMEM layouts all NVMEM (fixed) cells were defined
> +  as direct device subnodes. That syntax was replaced by "fixed-layout"
> +  and is deprecated now. No new bindings should use it.
> +
> +patternProperties:
> +  "@[0-9a-f]+(,[0-7])?$":
> +    type: object
> +    allOf:
> +      - $ref: layouts/fixed-cell.yaml
> +      - properties:
> +          compatible: false
> +    deprecated: true
> +
> +additionalProperties: true
> +
> +...
> diff --git a/Documentation/devicetree/bindings/nvmem/nvmem.yaml b/Documentation/devicetree/bindings/nvmem/nvmem.yaml
> index 9f921d940142..4fd015d402ce 100644
> --- a/Documentation/devicetree/bindings/nvmem/nvmem.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/nvmem.yaml
> @@ -46,15 +46,6 @@ properties:
>         container may reference more advanced (dynamic) layout
>         parsers.
>   
> -patternProperties:
> -  "@[0-9a-f]+(,[0-7])?$":
> -    type: object
> -    allOf:
> -      - $ref: layouts/fixed-cell.yaml
> -      - properties:
> -          compatible: false
> -    deprecated: true
> -
>   additionalProperties: true
>   
>   examples:
> diff --git a/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml b/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml
> index 8740938c32eb..8c8f05d9eaf1 100644
> --- a/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/qcom,qfprom.yaml
> @@ -11,6 +11,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml b/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml
> index 9b133f783d29..2ada2099946d 100644
> --- a/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/qcom,sec-qfprom.yaml
> @@ -16,6 +16,7 @@ description:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/qcom,spmi-sdam.yaml b/Documentation/devicetree/bindings/nvmem/qcom,spmi-sdam.yaml
> index cd980def97b8..068bedf5dbc9 100644
> --- a/Documentation/devicetree/bindings/nvmem/qcom,spmi-sdam.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/qcom,spmi-sdam.yaml
> @@ -16,6 +16,7 @@ description: |
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/rockchip,otp.yaml b/Documentation/devicetree/bindings/nvmem/rockchip,otp.yaml
> index 9c6eff788928..a44d44b32809 100644
> --- a/Documentation/devicetree/bindings/nvmem/rockchip,otp.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/rockchip,otp.yaml
> @@ -49,6 +49,7 @@ required:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>     - if:
>         properties:
> diff --git a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml
> index c5403e149080..b80fd8d1ae5b 100644
> --- a/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/rockchip-efuse.yaml
> @@ -11,6 +11,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml b/Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml
> index efccc5aacbe0..e27cbae2d63a 100644
> --- a/Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/socionext,uniphier-efuse.yaml
> @@ -12,6 +12,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/nvmem/sunplus,sp7021-ocotp.yaml b/Documentation/devicetree/bindings/nvmem/sunplus,sp7021-ocotp.yaml
> index da3f1de7d281..af97eeb8316c 100644
> --- a/Documentation/devicetree/bindings/nvmem/sunplus,sp7021-ocotp.yaml
> +++ b/Documentation/devicetree/bindings/nvmem/sunplus,sp7021-ocotp.yaml
> @@ -12,6 +12,7 @@ maintainers:
>   
>   allOf:
>     - $ref: nvmem.yaml#
> +  - $ref: nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:
> diff --git a/Documentation/devicetree/bindings/rtc/amlogic,meson6-rtc.yaml b/Documentation/devicetree/bindings/rtc/amlogic,meson6-rtc.yaml
> index 8bf7d3a9be98..3a4551253e3e 100644
> --- a/Documentation/devicetree/bindings/rtc/amlogic,meson6-rtc.yaml
> +++ b/Documentation/devicetree/bindings/rtc/amlogic,meson6-rtc.yaml
> @@ -13,6 +13,7 @@ maintainers:
>   allOf:
>     - $ref: rtc.yaml#
>     - $ref: /schemas/nvmem/nvmem.yaml#
> +  - $ref: /schemas/nvmem/nvmem-deprecated-cells.yaml#
>   
>   properties:
>     compatible:

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