linux-kernel - Re: [PATCH] dt-bindings: bus: add palmbus device tree bindings

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Date:   Sat, 16 Oct 2021 22:24:57 +0200
From:   Sergio Paracuellos <sergio.paracuellos@...il.com>
To:     Rob Herring <robh@...nel.org>
Cc:     "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>, John Crispin <john@...ozen.org>,
        NeilBrown <neil@...wn.name>,
        linux-kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: bus: add palmbus device tree bindings

On Sat, Oct 16, 2021 at 4:25 PM Rob Herring <robh@...nel.org> wrote:
>
> On Fri, Oct 15, 2021 at 09:17:41PM +0200, Sergio Paracuellos wrote:
> > Add device tree bindings for palmbus controller present in all the MIPS
> > ralink based SoCs.
> >
> > Signed-off-by: Sergio Paracuellos <sergio.paracuellos@...il.com>
> > ---
> >  .../devicetree/bindings/bus/palmbus.yaml      | 81 +++++++++++++++++++
> >  1 file changed, 81 insertions(+)
> >  create mode 100644 Documentation/devicetree/bindings/bus/palmbus.yaml
> >
> > diff --git a/Documentation/devicetree/bindings/bus/palmbus.yaml b/Documentation/devicetree/bindings/bus/palmbus.yaml
> > new file mode 100644
> > index 000000000000..d5159a4f3cf8
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/bus/palmbus.yaml
> > @@ -0,0 +1,81 @@
> > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> > +%YAML 1.2
> > +---
> > +$id: http://devicetree.org/schemas/bus/palmbus.yaml#
> > +$schema: http://devicetree.org/meta-schemas/core.yaml#
> > +
> > +title: Ralink PalmBus Device Tree Bindings
> > +
> > +maintainers:
> > +  - Sergio Paracuellos <sergio.paracuellos@...il.com>
> > +
> > +description: |
> > +  The ralink palmbus controller can be found in all ralink MIPS
> > +  SoCs. It provides an external bus for connecting multiple
> > +  external devices to the SoC.
> > +
> > +properties:
> > +  $nodename:
> > +    pattern: "^palmbus(@[0-9a-f]+)?$"
> > +
> > +  "#address-cells":
> > +    const: 1
> > +
> > +  "#size-cells":
> > +    const: 1
> > +
> > +  compatible:
> > +    const: palmbus
> > +
> > +  reg:
> > +    maxItems: 1
> > +
> > +  ranges: true
> > +
> > +patternProperties:
> > +  # All other properties should be child nodes with unit-address and 'reg'
> > +  "^[a-zA-Z][a-zA-Z0-9,+\\-._]{0,63}@[0-9a-fA-F]+$":
>
> The node name pattern is already checked elsewhere. You only need to
> define the unit-address part which should be lowercase hex. So just:
>
> '@[0-9a-f]+$'

Ok, thanks. Changed and send v4.

Best regards,
     Sergio Paracuellos

>
> > +    type: object
> > +    properties:
> > +      reg:
> > +        maxItems: 1
> > +
> > +    required:
> > +      - reg
> > +
> > +required:
> > +  - compatible
> > +  - reg
> > +  - "#address-cells"
> > +  - "#size-cells"
> > +  - ranges
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    palmbus@...00000 {
> > +        compatible = "palmbus";
> > +        reg = <0x1e000000 0x100000>
> > +        #address-cells = <1>;
> > +        #size-cells = <1>;
> > +        ranges = <0x0 0x1e000000 0x0fffff>;
> > +
> > +        syscon@0 {
> > +            compatible = "mediatek,mt7621-sysc", "syscon";
> > +            reg = <0x0 0x100>;
> > +            #clock-cells = <1>;
> > +            #reset-cells = <1>;
> > +            ralink,memctl = <&memc>;
> > +            clock-output-names = "xtal", "cpu", "bus",
> > +                                 "50m", "125m", "150m",
> > +                                 "250m", "270m";
> > +        };
> > +
> > +        wdt@100 {
> > +            compatible = "mediatek,mt7621-wdt";
> > +            reg = <0x100 0x100>;
> > +        };
> > +    };
> > +
> > +...
> > --
> > 2.33.0
> >
> >