linux-kernel - Re: [PATCH v4 2/7] dt-bindings: mdf: ti,j721e-system-controller.yaml: Add J721e

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Date:   Fri, 29 May 2020 09:55:42 +0300
From:   Roger Quadros <rogerq@...com>
To:     <t-kristo@...com>, <robh@...nel.org>
CC:     <kishon@...com>, <nm@...com>, <nsekhar@...com>, <vigneshr@...com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 2/7] dt-bindings: mdf: ti,j721e-system-controller.yaml:
 Add J721e

Hi Rob,

On 19/05/2020 16:51, Roger Quadros wrote:
> Add DT binding schema for J721e system controller.
> 
> Signed-off-by: Roger Quadros <rogerq@...com>
> ---
> Changelog:
> v4
> -address comments.

Hope this patch is OK now?

cheers,
-roger

> 
>   .../mfd/ti,j721e-system-controller.yaml       | 76 +++++++++++++++++++
>   1 file changed, 76 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
> 
> diff --git a/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml b/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
> new file mode 100644
> index 000000000000..cb28dc480c4c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/ti,j721e-system-controller.yaml
> @@ -0,0 +1,76 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +# Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mfd/ti,j721e-system-controller.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: TI J721e System Controller Registers R/W Device Tree Bindings
> +
> +description: |
> +  This represents the Control Module registers (CTRL_MMR0) on the SoC.
> +  System controller node represents a register region containing a set
> +  of miscellaneous registers. The registers are not cohesive enough to
> +  represent as any specific type of device. The typical use-case is
> +  for some other node's driver, or platform-specific code, to acquire
> +  a reference to the syscon node (e.g. by phandle, node path, or
> +  search using a specific compatible value), interrogate the node (or
> +  associated OS driver) to determine the location of the registers,
> +  and access the registers directly.
> +
> +maintainers:
> +  - Kishon Vijay Abraham I <kishon@...com>
> +  - Roger Quadros <rogerq@...com
> +
> +properties:
> +  compatible:
> +    anyOf:
> +      - items:
> +        - enum:
> +           - ti,j721e-system-controller
> +        - const: syscon
> +        - const: simple-mfd
> +
> +  "#address-cells":
> +    const: 1
> +
> +  "#size-cells":
> +    const: 1
> +
> +  ranges:
> +    description:
> +      Should translate from local addresses to bus addresses.
> +
> +# Optional children
> +
> +  "^serdes-ln-ctrl@[0-9a-f]+$":
> +    type: object
> +    description: |
> +      This is the SERDES lane control mux. It should follow the bindings
> +      specified in
> +      Documentation/devicetree/bindings/mux/reg-mux.txt
> +
> +required:
> +  - compatible
> +  - reg
> +  - "#address-cells"
> +  - "#size-cells"
> +  - ranges
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    scm_conf: scm-conf@...000 {
> +        compatible = "ti,j721e-system-controller", "syscon", "simple-mfd";
> +        reg = <0x00100000 0x1c000>;
> +        #address-cells = <1>;
> +        #size-cells = <1>;
> +        ranges;
> +
> +        serdes_ln_ctrl: serdes-ln-ctrl@...0 {
> +            compatible = "mmio-mux";
> +            reg = <0x00004080 0x50>;
> +        };
> +    };
> +...

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