linux-kernel - Re: [PATCH 1/2] Documentation: devicetree: Add document bindings for mtk-cir

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Date:   Tue, 10 Jan 2017 10:35:54 +0800
From:   Sean Wang <sean.wang@...iatek.com>
To:     Rob Herring <robh@...nel.org>
CC:     <mchehab@....samsung.com>, <hdegoede@...hat.com>,
        <hkallweit1@...il.com>, <mark.rutland@....com>,
        <matthias.bgg@...il.com>, <andi.shyti@...sung.com>,
        <hverkuil@...all.nl>, <sean@...s.org>,
        <ivo.g.dimitrov.75@...il.com>, <linux-media@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <keyhaede@...il.com>
Subject: Re: [PATCH 1/2] Documentation: devicetree: Add document bindings
 for mtk-cir

Hi Rob,

thanks for your effort for reviewing. I added comments inline.

On Mon, 2017-01-09 at 12:32 -0600, Rob Herring wrote:
> On Fri, Jan 06, 2017 at 12:06:23AM +0800, sean.wang@...iatek.com wrote:
> > From: Sean Wang <sean.wang@...iatek.com>
> > 
> > This patch adds documentation for devicetree bindings for
> > Mediatek IR controller.
> > 
> > Signed-off-by: Sean Wang <sean.wang@...iatek.com>
> > ---
> >  .../devicetree/bindings/media/mtk-cir.txt          | 23 ++++++++++++++++++++++
> >  1 file changed, 23 insertions(+)
> >  create mode 100644 linux-4.8.rc1_p0/Documentation/devicetree/bindings/media/mtk-cir.txt
> > 
> > diff --git a/Documentation/devicetree/bindings/media/mtk-cir.txt b/Documentation/devicetree/bindings/media/mtk-cir.txt
> > new file mode 100644
> > index 0000000..bbedd71
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/media/mtk-cir.txt
> > @@ -0,0 +1,23 @@
> > +Device-Tree bindings for Mediatek IR controller found in Mediatek SoC family
> > +
> > +Required properties:
> > +- compatible	    : "mediatek,mt7623-ir"
> > +- clocks	    : list of clock specifiers, corresponding to
> > +		      entries in clock-names property;
> > +- clock-names	    : should contain "clk" entries;
> > +- interrupts	    : should contain IR IRQ number;
> > +- reg		    : should contain IO map address for IR.
> > +
> > +Optional properties:
> > +- linux,rc-map-name : Remote control map name.
> 
> Would 'label' be appropriate here instead? If not, this needs to be 
> documented in a common location and explained better.
> 
I checked with how the way applied in other IR drivers is and found that
most IR driver also use the same label to identify the scan/key table
they prefer to use such as gpio-ir-recv, ir-hix5hd2, meson-ir and
sunxi-cir or use hard coding inside the driver. So I thought it should
be appropriate here currently.

> > +
> > +Example:
> > +
> > +cir: cir@...0013000 {
> 
> Drop the '0x'.
> 

okay, I will.

> > +	compatible = "mediatek,mt7623-ir";
> > +	reg = <0 0x10013000 0 0x1000>;
> > +	interrupts = <GIC_SPI 87 IRQ_TYPE_LEVEL_LOW>;
> > +	clocks = <&infracfg CLK_INFRA_IRRX>;
> > +	clock-names = "clk";
> > +	linux,rc-map-name = "rc-rc6-mce";
> > +};
> > -- 
> > 1.9.1
> >