linux-kernel - Re: [PATCH 04/11] dt-bindings: phy-mtk-tphy: add a new reference clock

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Date:   Thu, 29 Aug 2019 15:05:03 -0500
From:   Rob Herring <robh@...nel.org>
To:     Chunfeng Yun <chunfeng.yun@...iatek.com>
Cc:     Kishon Vijay Abraham I <kishon@...com>,
        Mark Rutland <mark.rutland@....com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org
Subject: Re: [PATCH 04/11] dt-bindings: phy-mtk-tphy: add a new reference
 clock

On Fri, Aug 23, 2019 at 03:00:11PM +0800, Chunfeng Yun wrote:
> Usually the digital and anolog phys use the same reference clock,
> but on some platforms, they are separated, so add another optional
> clock to support it.
> In order to keep the clock names consistent with PHY IP's, use
> the da_ref for anolog phy and ref clock for digital phy.
> 
> Signed-off-by: Chunfeng Yun <chunfeng.yun@...iatek.com>
> ---
>  Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt | 7 +++++--
>  1 file changed, 5 insertions(+), 2 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt b/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt
> index dbc143ed5999..ed9a2641f204 100644
> --- a/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt
> +++ b/Documentation/devicetree/bindings/phy/phy-mtk-tphy.txt
> @@ -41,9 +41,12 @@ Optional properties (PHY_TYPE_USB2 port (child) node):
>  - clocks	: a list of phandle + clock-specifier pairs, one for each
>  		  entry in clock-names
>  - clock-names	: may contain
> -		  "ref": 48M reference clock for HighSpeed anolog phy; and 26M
> -			reference clock for SuperSpeed anolog phy, sometimes is
> +		  "ref": 48M reference clock for HighSpeed (digital) phy; and 26M
> +			reference clock for SuperSpeed (digital) phy, sometimes is
>  			24M, 25M or 27M, depended on platform.
> +		  "da_ref": the reference clock of anolog phy, used if the clocks
> +			of anolog and digital phys are separated, otherwise uses

s/amolog/analog/

> +			"ref" clock only if need.

needed.

>  
>  - mediatek,eye-src	: u32, the value of slew rate calibrate
>  - mediatek,eye-vrt	: u32, the selection of VRT reference voltage
> -- 
> 2.23.0
>