linux-kernel - RE: [PATCH 1/2] dt-bindings: pwm: Convert imx pwm to json-schema

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Message-ID: <AM6PR04MB4966EC7122B2BFB9FEEDD74280B80@AM6PR04MB4966.eurprd04.prod.outlook.com>
Date:   Mon, 18 May 2020 05:58:42 +0000
From:   Aisheng Dong <aisheng.dong@....com>
To:     Anson Huang <anson.huang@....com>,
        "thierry.reding@...il.com" <thierry.reding@...il.com>,
        "u.kleine-koenig@...gutronix.de" <u.kleine-koenig@...gutronix.de>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "shawnguo@...nel.org" <shawnguo@...nel.org>,
        "s.hauer@...gutronix.de" <s.hauer@...gutronix.de>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>,
        "festevam@...il.com" <festevam@...il.com>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        "linux-pwm@...r.kernel.org" <linux-pwm@...r.kernel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
CC:     dl-linux-imx <linux-imx@....com>
Subject: RE: [PATCH 1/2] dt-bindings: pwm: Convert imx pwm to json-schema

> From: Anson Huang <Anson.Huang@....com>
> Sent: Thursday, May 14, 2020 2:54 PM
> 
> Convert the imx pwm binding to DT schema format using json-schema.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
>  Documentation/devicetree/bindings/pwm/imx-pwm.txt  | 27 ---------
> Documentation/devicetree/bindings/pwm/imx-pwm.yaml | 66
> ++++++++++++++++++++++
>  2 files changed, 66 insertions(+), 27 deletions(-)  delete mode 100644
> Documentation/devicetree/bindings/pwm/imx-pwm.txt
>  create mode 100644
> Documentation/devicetree/bindings/pwm/imx-pwm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.txt
> b/Documentation/devicetree/bindings/pwm/imx-pwm.txt
> deleted file mode 100644
> index 22f1c3d..0000000
> --- a/Documentation/devicetree/bindings/pwm/imx-pwm.txt
> +++ /dev/null
> @@ -1,27 +0,0 @@
> -Freescale i.MX PWM controller
> -
> -Required properties:
> -- compatible : should be "fsl,<soc>-pwm" and one of the following
> -   compatible strings:
> -  - "fsl,imx1-pwm" for PWM compatible with the one integrated on i.MX1
> -  - "fsl,imx27-pwm" for PWM compatible with the one integrated on i.MX27
> -- reg: physical base address and length of the controller's registers
> -- #pwm-cells: 2 for i.MX1 and 3 for i.MX27 and newer SoCs. See pwm.yaml
> -  in this directory for a description of the cells format.
> -- clocks : Clock specifiers for both ipg and per clocks.
> -- clock-names : Clock names should include both "ipg" and "per"
> -See the clock consumer binding,
> -	Documentation/devicetree/bindings/clock/clock-bindings.txt
> -- interrupts: The interrupt for the pwm controller
> -
> -Example:
> -
> -pwm1: pwm@...b4000 {
> -	#pwm-cells = <3>;
> -	compatible = "fsl,imx53-pwm", "fsl,imx27-pwm";
> -	reg = <0x53fb4000 0x4000>;
> -	clocks = <&clks IMX5_CLK_PWM1_IPG_GATE>,
> -		 <&clks IMX5_CLK_PWM1_HF_GATE>;
> -	clock-names = "ipg", "per";
> -	interrupts = <61>;
> -};
> diff --git a/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
> b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
> new file mode 100644
> index 0000000..4b62af2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/imx-pwm.yaml
> @@ -0,0 +1,66 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> +---
> +$id:
> +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevice
> +tree.org%2Fschemas%2Fpwm%2Fimx-pwm.yaml%23&amp;data=02%7C01%
> 7Caisheng.d
> +ong%40nxp.com%7C9b5cc1814a4b47d1cb0d08d7f7d4f594%7C686ea1d3bc
> 2b4c6fa92c
> +d99c5c301635%7C0%7C0%7C637250366331627865&amp;sdata=M2RPcty
> wz61WZrpAW6S
> +O3NJbr2wj2qXwnMMmBwCbInk%3D&amp;reserved=0
> +$schema:
> +https://eur01.safelinks.protection.outlook.com/?url=http%3A%2F%2Fdevice
> +tree.org%2Fmeta-schemas%2Fcore.yaml%23&amp;data=02%7C01%7Caishen
> g.dong%
> +40nxp.com%7C9b5cc1814a4b47d1cb0d08d7f7d4f594%7C686ea1d3bc2b4c
> 6fa92cd99c
> +5c301635%7C0%7C0%7C637250366331627865&amp;sdata=UxgYSClanyOjt
> BmlyNrMZyF
> +3%2F5awD%2FM3yaVPqgNKgxs%3D&amp;reserved=0
> +
> +title: Freescale i.MX PWM controller
> +
> +maintainers:
> +  - Philipp Zabel <p.zabel@...gutronix.de>
> +
> +properties:
> +  "#pwm-cells":
> +    description: |
> +      Should be 2 for i.MX1 and 3 for i.MX27 and newer SoCs. See pwm.yaml
> +      in this directory for a description of the cells format.

Should we add the reference to pwm.yaml?
BTW, strange, I didn't see format description in pwm.yaml.

> +    enum:
> +      - 2
> +      - 3
> +
> +  compatible:
> +    enum:
> +      - fsl,imx1-pwm
> +      - fsl,imx27-pwm
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    items:
> +      - description: SoC PWM ipg clock
> +      - description: SoC PWM per clock
> +    maxItems: 2
> +
> +  clock-names:
> +    items:
> +      - const: ipg
> +      - const: per
> +    maxItems: 2
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - "#pwm-cells"
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/imx5-clock.h>
> +
> +    pwm@...b4000 {
> +        #pwm-cells = <3>;
> +        compatible = "fsl,imx27-pwm";
> +        reg = <0x53fb4000 0x4000>;
> +        clocks = <&clks IMX5_CLK_PWM1_IPG_GATE>,
> +                 <&clks IMX5_CLK_PWM1_HF_GATE>;
> +        clock-names = "ipg", "per";
> +        interrupts = <61>;
> +    };
> --
> 2.7.4