linux-kernel - Re: [PATCH 1/3] dt-bindings: Add dt bindings for flex noc Performance Monitor

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Date:   Thu, 5 Dec 2019 12:17:40 -0600
From:   Rob Herring <robh@...nel.org>
To:     shubhrajyoti.datta@...il.com
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-doc@...r.kernel.org, corbet@....net,
        gregkh@...uxfoundation.org, arnd@...db.de,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: Re: [PATCH 1/3] dt-bindings: Add dt bindings for flex noc
 Performance Monitor

On Mon, Nov 25, 2019 at 04:25:50PM +0530, shubhrajyoti.datta@...il.com wrote:
> From: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
> 
> Add dt bindings for flexnoc Performance Monitor.
> The flexnoc counters for read and write response and requests are
> supported.
> 
> Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
> ---
> changes from RFC:
> moved to schema / yaml
> 
>  .../devicetree/bindings/perf/xlnx-flexnoc-pm.yaml  | 45 ++++++++++++++++++++++
>  1 file changed, 45 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/perf/xlnx-flexnoc-pm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/perf/xlnx-flexnoc-pm.yaml b/Documentation/devicetree/bindings/perf/xlnx-flexnoc-pm.yaml
> new file mode 100644
> index 0000000..bd0f345
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/perf/xlnx-flexnoc-pm.yaml
> @@ -0,0 +1,45 @@
> +# SPDX-License-Identifier: GPL-2.0-or-later OR BSD-2-Clause

() around the licenses.

Are you good with GPL v10? Make it 'GPL-2.0-only' instead.

> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/perf/xlnx-flexnoc-pm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Xilinx flexnoc Performance Monitor device tree bindings
> +
> +maintainers:
> +  - Arnd Bergmann <arnd@...db.de>
> +  - Greg Kroah-Hartman <gregkh@...uxfoundation.org>

This should be someone familar with this h/w (you).

> +
> +properties:
> +  compatible:
> +    # Versal SoC based boards
> +    items:
> +      - enum:
> +          - xlnx,flexnoc-pm-2.7
> +
> +  reg:
> +    items:
> +      - description: funnel registers
> +      - description: baselpd registers
> +      - description: basefpd registers
> +
> +  reg-names:
> +    # The core schema enforces this is a string array
> +    items:
> +      - const: funnel
> +      - const: baselpd
> +      - const: basefpd
> +
> +required:
> +  - compatible
> +  - reg

No point having 'reg-names' if not required.


Add:

additionalProperties: false

> +
> +examples:
> +  - |
> +    performance-monitor@...20000 {
> +        compatible = "xlnx,flexnoc-pm-2.7";
> +        reg-names = "funnel", "baselpd", "basefpd";
> +        reg = <0x0 0xf0920000 0x0 0x1000>,
> +              <0x0 0xf0980000 0x0 0x9000>,
> +              <0x0 0xf0b80000 0x0 0x9000>;
> +    };
> -- 
> 2.1.1
>