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Date:   Wed, 20 Feb 2019 16:25:48 +0100
From:   Matthias Brugger <matthias.bgg@...il.com>
To:     Qii Wang <qii.wang@...iatek.com>, wsa@...-dreams.de
Cc:     devicetree@...r.kernel.org, srv_heupstream@...iatek.com,
        robh@...nel.org, leilk.liu@...iatek.com, xinping.qian@...iatek.com,
        linux-kernel@...r.kernel.org, liguo.zhang@...iatek.com,
        linux-mediatek@...ts.infradead.org, linux-i2c@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v4 2/3] dt-bindings: i2c: Add Mediatek MT8183 i2c binding



On 20/02/2019 13:33, Qii Wang wrote:
> Add MT8183 i2c binding to binding file. Compare to MT2712 i2c
> controller, MT8183 has different registers, offsets, and clock.
> 
> Signed-off-by: Qii Wang <qii.wang@...iatek.com>
> ---
>  Documentation/devicetree/bindings/i2c/i2c-mtk.txt |    5 +++--
>  1 file changed, 3 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/i2c/i2c-mtk.txt b/Documentation/devicetree/bindings/i2c/i2c-mtk.txt
> index ee4c324..da2fa60 100644
> --- a/Documentation/devicetree/bindings/i2c/i2c-mtk.txt
> +++ b/Documentation/devicetree/bindings/i2c/i2c-mtk.txt
> @@ -12,14 +12,15 @@ Required properties:
>        "mediatek,mt7623-i2c", "mediatek,mt6577-i2c": for MediaTek MT7623
>        "mediatek,mt7629-i2c", "mediatek,mt2712-i2c": for MediaTek MT7629
>        "mediatek,mt8173-i2c": for MediaTek MT8173
> +      "mediatek,mt8183-i2c": for MediaTek MT8183
>    - reg: physical base address of the controller and dma base, length of memory
>      mapped region.
>    - interrupts: interrupt number to the cpu.
>    - clock-div: the fixed value for frequency divider of clock source in i2c
>      module. Each IC may be different.
>    - clocks: clock name from clock manager
> -  - clock-names: Must include "main" and "dma", if enable have-pmic need include
> -    "pmic" extra.
> +  - clock-names: Must include "main" and "dma", "arb" is optional, if enable
> +    have-pmic need include "pmic" extra.

You have to mention that the arb clock is only necessary for mt8183.

>  
>  Optional properties:
>    - clock-frequency: Frequency in Hz of the bus when transfer, the default value
> 

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