linux-kernel - Re: [PATCH v4 5/5] rtc: isl1219: add device tree docu

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Message-ID: <20180711151621.GA4084@rob-hp-laptop>
Date:   Wed, 11 Jul 2018 09:16:21 -0600
From:   Rob Herring <robh@...nel.org>
To:     Denis OSTERLAND <denis.osterland@...hl.com>
Cc:     "mark.rutland@....com" <mark.rutland@....com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "alexandre.belloni@...tlin.com" <alexandre.belloni@...tlin.com>,
        "m.grzeschik@...gutronix.de" <m.grzeschik@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "a.zummo@...ertech.it" <a.zummo@...ertech.it>,
        "linux-rtc@...r.kernel.org" <linux-rtc@...r.kernel.org>,
        "kernel@...gutronix.de" <kernel@...gutronix.de>
Subject: Re: [PATCH v4 5/5] rtc: isl1219: add device tree docu

On Tue, Jul 10, 2018 at 09:44:15AM +0000, Denis OSTERLAND wrote:
> From: Denis Osterland <Denis.Osterland@...hl.com>
> 
> The devicetree documentation for the ISL1219 device tree
> binding is added with an short example. It is not a trivial
> device, because it supports two interrupt souces.

s/souces/sources/

> 
> Signed-off-by: Denis Osterland <Denis.Osterland@...hl.com>
> ---
>  .../devicetree/bindings/rtc/isil,isl1219.txt  | 29 +++++++++++++++++++
>  1 file changed, 29 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/rtc/isil,isl1219.txt
> 
> diff --git a/Documentation/devicetree/bindings/rtc/isil,isl1219.txt b/Documentation/devicetree/bindings/rtc/isil,isl1219.txt
> new file mode 100644
> index 000000000000..f26f1e9d4bde
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/rtc/isil,isl1219.txt
> @@ -0,0 +1,29 @@
> +Intersil ISL1219 I2C RTC/Alarm chip with event in
> +
> +ISL1219 has additional pins EVIN and #EVDET for tamper detection.
> +
> +Required properties supported by the device:
> +
> + - "compatible": must be "isil,isl1219"
> + - "reg": I2C bus address of the device
> +
> +Optional properties:
> +
> + - "interrupt-names": list which may contains "irq" and "evdet"
> + - "interrupt-parent", "interrupts", "interrupts-extended":
> +   for passing the interrupt line of the SoC connected to #IRQ pin
> +   and #EVDET pin of the RTC chip.

Just list 'interrupts' and how many there are. interrupt-parent is 
implied and may be in a parent node. interrupts-extended is also 
implicitly allowed as needed.

> + - "isil,ev-evienb": if present bit can be set to disable event input pull-up
> +
> +
> +Example isl1219 node with #IRQ pin connected to SoC gpio1 pin12
> + and #EVDET pin connected to SoC gpio2 pin 24:
> +
> +	isl1219: rtc@68 {
> +		compatible = "isil,isl1219";
> +		reg = <0x68>;
> +		interrupt-names = "irq", "evdet";
> +		interrupts-extended = <&gpio1 12 IRQ_TYPE_EDGE_FALLING>,
> +			<&gpio2 24 IRQ_TYPE_EDGE_FALLING>;
> +	};
> +
> --
> 2.18.0
> 
> 
> 
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