linux-kernel - Re: [RESEND PATCH 1/2] dt-bindings: i2c: Add MediaTek MT7622 i2c binding

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Date:   Fri, 11 Aug 2017 09:37:53 +0800
From:   Jun Gao <jun.gao@...iatek.com>
To:     Honghui Zhang <honghui.zhang@...iatek.com>
CC:     Wolfram Sang <wsa@...-dreams.de>,
        Matthias Brugger <matthias.bgg@...il.com>,
        <devicetree@...r.kernel.org>, <srv_heupstream@...iatek.com>,
        <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>, <linux-i2c@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [RESEND PATCH 1/2] dt-bindings: i2c: Add MediaTek MT7622 i2c
 binding

On Thu, 2017-08-10 at 16:19 +0800, Honghui Zhang wrote:
> On Thu, 2017-08-10 at 10:27 +0800, Jun Gao wrote:
> > From: Jun Gao <jun.gao@...iatek.com>
> > 
> > Add MT7622 i2c binding to binding file. Compare to MT8173 i2c
> > controller, MT7622 limits message numbers to 255, and does not
> > support 4GB DMA mode.
> > 
> > Signed-off-by: Jun Gao <jun.gao@...iatek.com>
> > ---
> >  Documentation/devicetree/bindings/i2c/i2c-mtk.txt | 11 ++++++-----
> >  1 file changed, 6 insertions(+), 5 deletions(-)
> > 
> > diff --git a/Documentation/devicetree/bindings/i2c/i2c-mtk.txt b/Documentation/devicetree/bindings/i2c/i2c-mtk.txt
> > index bd5a7be..ff9ac61 100644
> > --- a/Documentation/devicetree/bindings/i2c/i2c-mtk.txt
> > +++ b/Documentation/devicetree/bindings/i2c/i2c-mtk.txt
> > @@ -4,11 +4,12 @@ The Mediatek's I2C controller is used to interface with I2C devices.
> >  
> >  Required properties:
> >    - compatible: value should be either of the following.
> > -      "mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for Mediatek mt2701
> > -      "mediatek,mt6577-i2c": for i2c compatible with mt6577.
> > -      "mediatek,mt6589-i2c": for i2c compatible with mt6589.
> > -      "mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for i2c compatible with mt7623.
> > -      "mediatek,mt8173-i2c": for i2c compatible with mt8173.
> > +	"mediatek,mt2701-i2c", "mediatek,mt6577-i2c": for Mediatek MT2701
> > +	"mediatek,mt6577-i2c": for Mediatek MT6577
> > +	"mediatek,mt6589-i2c": for Mediatek MT6589
> 
> Better not change those and just add compatible strings for mt7622.
> 
It seems better to use the same format for all SoCs. 

Jun
> > +	"mediatek,mt7622-i2c": for Mediatek MT7622
> > +	"mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for Mediatek MT7623
> > +	"mediatek,mt8173-i2c": for Mediatek MT8173
> >    - reg: physical base address of the controller and dma base, length of memory
> >      mapped region.
> >    - interrupts: interrupt number to the cpu.
> 
>