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

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Date:   Mon, 18 May 2020 09:57:32 +0000
From:   Anson Huang <anson.huang@....com>
To:     Aisheng Dong <aisheng.dong@....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



> 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?

Will add all i.MX6 compatible according to DT.

> 
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  interrupts:
> 
> Need description here

OK.

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

OK.

Anson