linux-kernel - Re: [RFC v2 03/17] dt-bindings: timer: Document Owl timer

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Message-ID: <0c3f94c0-b920-25f9-7347-b43407d66dfa@suse.de>
Date:   Mon, 27 Feb 2017 15:40:07 +0100
From:   Andreas Färber <afaerber@...e.de>
To:     Rob Herring <robh+dt@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>
Cc:     arm@...nel.org, Mark Rutland <mark.rutland@....com>,
        support@...aker.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, mp-cs@...ions-semi.com,
        96boards@...obotics.com, linux-arm-kernel@...ts.infradead.org
Subject: Re: [RFC v2 03/17] dt-bindings: timer: Document Owl timer

Am 24.02.2017 um 04:40 schrieb Andreas Färber:
> The Actions Semi S500 SoC contains a timer block with two timers.
> 
> Signed-off-by: Andreas Färber <afaerber@...e.de>
> ---
>  v2: new
>  
>  .../devicetree/bindings/timer/actions,owl-timer.txt      | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/timer/actions,owl-timer.txt
> 
> diff --git a/Documentation/devicetree/bindings/timer/actions,owl-timer.txt b/Documentation/devicetree/bindings/timer/actions,owl-timer.txt
> new file mode 100644
> index 0000000..141bc7b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/timer/actions,owl-timer.txt
> @@ -0,0 +1,16 @@
> +Actions Semi Owl Timer
> +
> +Required properties:
> +- compatible :  "actions,owl-timer"
> +- reg        :  Offset and length of the register set for the device.
> +- interrupts :  Should contain two timer interrupts.
> +
> +
> +Example:
> +
> +		timer@...68000 {
> +			compatible = "actions,owl-timer";
> +			reg = <0xb0168000 0x100>;
> +			interrupts = <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
> +			             <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>;
> +		};

I need to modify these bindings for upcoming v3 in the following ways:

* "actions,s500-timer", "actions,owl-timer" to deal with S500 vs. S900
differences while keeping a single driver registration (or would two
registrations be preferred, dropping the second compatible? they do
share a common subset)

* Use named interrupts to deal with 2x 2Hz + 2x Timer vs. 4x Timer for
complete hardware description

Regards,
Andreas

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