linux-kernel - Re: [PATCH v6 02/14] dt-bindings: pinctrl: imx: Add fsl,scu-iomux yaml file

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Date:   Wed, 29 Jun 2022 19:53:51 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Viorel Suman (OSS)" <viorel.suman@....nxp.com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Dong Aisheng <aisheng.dong@....com>,
        Fabio Estevam <festevam@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Stefan Agner <stefan@...er.ch>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Abel Vesa <abelvesa@...nel.org>,
        Viorel Suman <viorel.suman@....com>,
        Oliver Graute <oliver.graute@...oconnector.com>,
        Liu Ying <victor.liu@....com>,
        Mirela Rabulea <mirela.rabulea@....com>,
        Peng Fan <peng.fan@....com>, Ming Qian <ming.qian@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-input@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-rtc@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 02/14] dt-bindings: pinctrl: imx: Add fsl,scu-iomux
 yaml file

On 29/06/2022 18:44, Viorel Suman (OSS) wrote:
> From: Abel Vesa <abel.vesa@....com>
> 
> In order to replace the fsl,scu txt file from bindings/arm/freescale,
> we need to split it between the right subsystems. This patch documents
> separately the 'iomux/pinctrl' child node of the SCU main node.
> 
> Signed-off-by: Abel Vesa <abel.vesa@....com>
> Signed-off-by: Viorel Suman <viorel.suman@....com>
> ---
>  .../bindings/pinctrl/fsl,scu-pinctrl.yaml     | 68 +++++++++++++++++++
>  1 file changed, 68 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml
> new file mode 100644
> index 000000000000..76a2e7b28172
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml
> @@ -0,0 +1,68 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/fsl,scu-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: i.MX SCU Client Device Node - Pinctrl bindings based on SCU Message Protocol
> +
> +maintainers:
> +  - Dong Aisheng <aisheng.dong@....com>
> +
> +description: i.MX SCU Client Device Node
> +  Client nodes are maintained as children of the relevant IMX-SCU device node.
> +  This binding uses the i.MX common pinctrl binding.
> +  (Documentation/devicetree/bindings/pinctrl/fsl,imx-pinctrl.txt)
> +
> +allOf:
> +  - $ref: "pinctrl.yaml#"

Don't mix the quotes. You changed them to ', so stick with it.

> +
> +properties:
> +  compatible:
> +    enum:
> +      - fsl,imx8qm-iomuxc
> +      - fsl,imx8qxp-iomuxc
> +      - fsl,imx8dxl-iomuxc
> +
> +patternProperties:
> +  'grp$':
> +    type: object
> +    description:
> +      Pinctrl node's client devices use subnodes for desired pin configuration.
> +      Client device subnodes use below standard properties.
> +
> +    properties:
> +      fsl,pins:
> +        description:
> +          each entry consists of 3 integers and represents the pin ID, the mux value
> +          and config setting for the pin. The first 2 integers - pin_id and mux_val - are
> +          specified using a PIN_FUNC_ID macro, which can be found in
> +          <include/dt-bindings/pinctrl/pads-imx8qxp.h>. The last integer CONFIG is
> +          the pad setting value like pull-up on this pin. Please refer to the
> +          appropriate i.MX8 Reference Manual for detailed CONFIG settings.
> +        $ref: /schemas/types.yaml#/definitions/uint32-matrix

Look at fsl,imx8mq-pinctrl.yaml. Each item is described (items under items).

> +
> +    required:
> +      - fsl,pins
> +
> +    additionalProperties: false
> +
> +required:
> +  - compatible
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/pinctrl/pads-imx8qxp.h>
> +
> +    pinctrl {
> +        compatible = "fsl,imx8qxp-iomuxc";
> +
> +        pinctrl_lpuart0: lpuart0grp {
> +            fsl,pins = <
> +                111 0 0x06000020
> +                112 0 0x06000020
> +            >;
> +        };
> +    };


Best regards,
Krzysztof