linux-kernel - RE: [PATCH] dt-bindings: reset: Convert i.MX reset to json-schema

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Date:   Mon, 18 May 2020 09:07:53 +0000
From:   Aisheng Dong <aisheng.dong@....com>
To:     Anson Huang <anson.huang@....com>,
        "p.zabel@...gutronix.de" <p.zabel@...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>,
        "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] dt-bindings: reset: Convert i.MX reset to json-schema

> From: Anson Huang <Anson.Huang@....com>
> Sent: Tuesday, May 12, 2020 10:23 AM
> 
> Convert the i.MX reset binding to DT schema format using json-schema.
> 
> Signed-off-by: Anson Huang <Anson.Huang@....com>
> ---
>  .../devicetree/bindings/reset/fsl,imx-src.txt      | 49 ------------------
>  .../devicetree/bindings/reset/fsl,imx-src.yaml     | 58
> ++++++++++++++++++++++
>  2 files changed, 58 insertions(+), 49 deletions(-)  delete mode 100644
> Documentation/devicetree/bindings/reset/fsl,imx-src.txt
>  create mode 100644
> Documentation/devicetree/bindings/reset/fsl,imx-src.yaml
> 
> diff --git a/Documentation/devicetree/bindings/reset/fsl,imx-src.txt
> b/Documentation/devicetree/bindings/reset/fsl,imx-src.txt
> deleted file mode 100644
> index 6ed79e6..0000000
> --- a/Documentation/devicetree/bindings/reset/fsl,imx-src.txt
> +++ /dev/null
> @@ -1,49 +0,0 @@
> -Freescale i.MX System Reset Controller
> -======================================
> -
> -Please also refer to reset.txt in this directory for common reset -controller
> binding usage.
> -
> -Required properties:
> -- compatible: Should be "fsl,<chip>-src"
> -- reg: should be register base and length as documented in the
> -  datasheet
> -- interrupts: Should contain SRC interrupt and CPU WDOG interrupt,
> -  in this order.
> -- #reset-cells: 1, see below
> -
> -example:
> -
> -src: src@...8000 {
> -        compatible = "fsl,imx6q-src";
> -        reg = <0x020d8000 0x4000>;
> -        interrupts = <0 91 0x04 0 96 0x04>;
> -        #reset-cells = <1>;
> -};
> -
> -Specifying reset lines connected to IP modules
> -==============================================
> -
> -The system reset controller can be used to reset the GPU, VPU, -IPU, and
> OpenVG IP modules on i.MX5 and i.MX6 ICs. Those device -nodes should
> specify the reset line on the SRC in their resets -property, containing a phandle
> to the SRC device node and a -RESET_INDEX specifying which module to reset,
> as described in -reset.txt
> -
> -example:
> -
> -        ipu1: ipu@...0000 {
> -                resets = <&src 2>;
> -        };
> -        ipu2: ipu@...0000 {
> -                resets = <&src 4>;
> -        };
> -
> -The following RESET_INDEX values are valid for i.MX5:
> -GPU_RESET     0
> -VPU_RESET     1
> -IPU1_RESET    2
> -OPEN_VG_RESET 3
> -The following additional RESET_INDEX value is valid for i.MX6:
> -IPU2_RESET    4
> diff --git a/Documentation/devicetree/bindings/reset/fsl,imx-src.yaml
> b/Documentation/devicetree/bindings/reset/fsl,imx-src.yaml
> new file mode 100644
> index 0000000..276a533
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/reset/fsl,imx-src.yaml
> @@ -0,0 +1,58 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) %YAML 1.2
> +---
> +title: Freescale i.MX System Reset Controller
> +
> +maintainers:
> +  - Philipp Zabel <p.zabel@...gutronix.de>
> +
> +description: |
> +  The system reset controller can be used to reset the GPU, VPU,
> +  IPU, and OpenVG IP modules on i.MX5 and i.MX6 ICs. Those device
> +  nodes should specify the reset line on the SRC in their resets
> +  property, containing a phandle to the SRC device node and a
> +  RESET_INDEX specifying which module to reset, as described in
> +  reset.txt
> +
> +  The following RESET_INDEX values are valid for i.MX5:
> +    GPU_RESET     0
> +    VPU_RESET     1
> +    IPU1_RESET    2
> +    OPEN_VG_RESET 3
> +  The following additional RESET_INDEX value is valid for i.MX6:
> +    IPU2_RESET    4
> +
> +properties:
> +  compatible:
> +    items:
> +      - const: "fsl,imx51-src"

What about mx6?

> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:

Need description here

> +    minItems: 1
> +    maxItems: 2
> +
> +  '#reset-cells':
> +    const: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - '#reset-cells'
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    src@...d0000 {

s/src/reset-controller

Regards
Aisheng

> +        compatible = "fsl,imx51-src";
> +        reg = <0x73fd0000 0x4000>;
> +        interrupts = <75>;
> +        #reset-cells = <1>;
> +    };
> --
> 2.7.4