linux-kernel - Re: [PATCH v1 02/14] dt-bindings: bus: imx-weim: convert to YAML

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Message-ID: <38e18310-4eba-4daa-b780-c719f38d3c5f@linaro.org>
Date: Sun, 11 Feb 2024 13:31:04 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Sebastian Reichel <sre@...nel.org>, Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
 Sascha Hauer <s.hauer@...gutronix.de>, Fabio Estevam <festevam@...il.com>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 NXP Linux Team <linux-imx@....com>
Cc: Dong Aisheng <aisheng.dong@....com>,
 Linus Walleij <linus.walleij@...aro.org>,
 Dmitry Torokhov <dmitry.torokhov@...il.com>, Mark Brown
 <broonie@...nel.org>, linux-arm-kernel@...ts.infradead.org,
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1 02/14] dt-bindings: bus: imx-weim: convert to YAML

On 10/02/2024 02:18, Sebastian Reichel wrote:
> Convert the i.MX  Wireless External Interface Module binding to YAML.
> 
> Signed-off-by: Sebastian Reichel <sre@...nel.org>
> ---
>  .../devicetree/bindings/bus/fsl,imx-weim.yaml | 225 ++++++++++++++++++
>  .../devicetree/bindings/bus/imx-weim.txt      | 117 ---------
>  2 files changed, 225 insertions(+), 117 deletions(-)
>  create mode 100644 Documentation/devicetree/bindings/bus/fsl,imx-weim.yaml
>  delete mode 100644 Documentation/devicetree/bindings/bus/imx-weim.txt
> 
> diff --git a/Documentation/devicetree/bindings/bus/fsl,imx-weim.yaml b/Documentation/devicetree/bindings/bus/fsl,imx-weim.yaml
> new file mode 100644
> index 000000000000..3d27bdaef304
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/bus/fsl,imx-weim.yaml
> @@ -0,0 +1,225 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/bus/fsl,imx-weim.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: i.MX Wireless External Interface Module (WEIM)

This patchset does not do what I asked to, but maybe that's just
coincidence that you send conversion now.

To recall:

https://lore.kernel.org/all/cee1ca11-03bf-4a0b-9ff3-490457f9fbe8@linaro.org/

> +
> +maintainers:
> +  - Shawn Guo <shawnguo@...nel.org>
> +  - Sascha Hauer <s.hauer@...gutronix.de>
> +
> +description:
> +  The term "wireless" does not imply that the WEIM is literally an interface
> +  without wires. It simply means that this module was originally designed for
> +  wireless and mobile applications that use low-power technology. The actual
> +  devices are instantiated from the child nodes of a WEIM node.
> +
> +properties:
> +  compatible:
> +    oneOf:
> +      - enum:
> +          - fsl,imx1-weim
> +          - fsl,imx27-weim
> +          - fsl,imx50-weim
> +          - fsl,imx51-weim
> +          - fsl,imx6q-weim
> +      - items:
> +          - enum:
> +              - fsl,imx31-weim
> +              - fsl,imx35-weim
> +          - const: fsl,imx27-weim
> +      - items:
> +          - enum:
> +              - fsl,imx6sx-weim
> +              - fsl,imx6ul-weim
> +          - const: fsl,imx6q-weim
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  '#address-cells':
> +    const: 2
> +
> +  '#size-cells':
> +    const: 1
> +
> +  ranges: true
> +
> +  fsl,weim-cs-gpr:
> +    $ref: /schemas/types.yaml#/definitions/phandle
> +    description: |
> +      Phandle to the system General Purpose Register controller that contains
> +      WEIM CS GPR register, e.g. IOMUXC_GPR1 on i.MX6Q. IOMUXC_GPR1[11:0]
> +      should be set up as one of the following 4 possible values depending on
> +      the CS space configuration.
> +
> +      IOMUXC_GPR1[11:0]    CS0    CS1    CS2    CS3
> +      ---------------------------------------------
> +              05          128M     0M     0M     0M
> +              033          64M    64M     0M     0M
> +              0113         64M    32M    32M     0M
> +              01111        32M    32M    32M    32M
> +
> +      In case that the property is absent, the reset value or what bootloader
> +      sets up in IOMUXC_GPR1[11:0] will be used.
> +
> +  fsl,burst-clk-enable:
> +    type: boolean
> +    description:
> +      The presence of this property indicates that the weim bus should operate
> +      in Burst Clock Mode.
> +
> +  fsl,continuous-burst-clk:
> +    type: boolean
> +    description:
> +      Make Burst Clock to output continuous clock. Without this option Burst
> +      Clock will output clock only when necessary.
> +
> +patternProperties:
> +  "^.*@[0-7],[0-9a-f]+$":
> +    description: Devices attached to chip selects are represented as subnodes.
> +    type: object
> +    additionalProperties: true
> +    properties:
> +      fsl,weim-cs-timing:
> +        $ref: /schemas/types.yaml#/definitions/uint32-array
> +        description:
> +          Timing values for the child node.
> +    required:
> +      - fsl,weim-cs-timing

You need to integrate it into mc-peripheral-props.yaml. Also check how
other bus controllers define children schema.


required: block goes here.

> +
> +allOf:
> +  - if:
> +      properties:
> +        compatible:
> +          not:
> +            contains:
> +              enum:
> +                - fsl,imx50-weim



Best regards,
Krzysztof