linux-kernel - Re: [PATCH v15 06/12] dt-bindings: add document for dw_hdmi

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Message-ID: <547EDB3B.9010907@rock-chips.com>
Date:	Wed, 03 Dec 2014 17:43:23 +0800
From:	Andy Yan <andy.yan@...k-chips.com>
To:	Philipp Zabel <p.zabel@...gutronix.de>
CC:	Mark Rutland <mark.rutland@....com>, heiko@...ech.de,
	airlied@...ux.ie, dri-devel@...ts.freedesktop.org,
	ykk@...k-chips.com, devel@...verdev.osuosl.org,
	Arnd Bergmann <arnd@...db.de>,
	linux-rockchip@...ts.infradead.org,
	Grant Likely <grant.likely@...aro.org>,
	rmk+kernel@....linux.org.uk, jay.xu@...k-chips.com,
	devicetree@...r.kernel.org, Zubair.Kakakhel@...tec.com,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Inki Dae <inki.dae@...sung.com>,
	Rob Herring <robh+dt@...nel.org>,
	Sean Paul <seanpaul@...omium.org>,
	Dave Airlie <airlied@...hat.com>, mark.yao@...k-chips.com,
	fabio.estevam@...escale.com, Josh Boyer <jwboyer@...hat.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-kernel@...r.kernel.org, djkurtz@...gle.com,
	Kumar Gala <galak@...eaurora.org>,
	Shawn Guo <shawn.guo@...aro.org>,
	vladimir_zapolskiy@...tor.com, Lucas Stach <l.stach@...gutronix.de>
Subject: Re: [PATCH v15 06/12] dt-bindings: add document for dw_hdmi

Hi Philipp:
On 2014年12月03日 17:19, Philipp Zabel wrote:
> Hi Andy,
>
> Am Mittwoch, den 03.12.2014, 08:54 +0800 schrieb Andy Yan:
>>>> +Required properities:
>>>> +- compatible: platform specific such as:
>>>> +   * "fsl,imx6q-hdmi"
>>>> +   * "fsl,imx6dl-hdmi"
>>>> +   * "rockchip,rk3288-dw-hdmi"
>>> I think we should add a common compatible value "snps,dw-hdmi-tx" here:
>>>
>>> 	compatible = "fsl,imx6q-hdmi", "snps,dw-hdmi-tx";
>>>
>>        How about "snps,dw-hdmi", because the driver is not only about
>>     hdmi tx, but also include hdmi phy.
> Synopsys call the whole module
> "DesignWare HDMI Transmitter (TX) IP Solution":
>
> https://www.synopsys.com/dw/ipdir.php?ds=dwc_hdmi_14_csds_tx
> https://www.synopsys.com/dw/ipdir.php?ds=dwc_hdmi_20_csds_tx
>
> That includes the PHY. I'd prefer keeping the -tx in there to
> differentiate from a possible future "snps,dw-hdmi-rx":
>
> https://www.synopsys.com/dw/ipdir.php?ds=dwc_hdmi_14_csds_rx
> https://www.synopsys.com/dw/ipdir.php?ds=dwc_hdmi_20_csds_rx

   Ok, I will add the compatible "snps, dw-hdmi-tx",
    So do I need to add this value to imx6dl.dtsi?
>>         If we add such compatible value, do we have to implement another
>>      platform driver like dw_hdmi-pltfm.c with the
>> compatible="snps,dw-hdmi" ,
>>      or just include the compatible value in dw_hdmi-imx.c and
>> dw_hdmi-rockchip.c?
> That common compatible doesn't have to be used by any driver. It's just
> there to show these are the same/similar IP core.
> If a common driver without any SoC specific knowledge could be written,
> that one would match against the common compatible.
>
> regards
> Philipp
>
>
> _______________________________________________
> Linux-rockchip mailing list
> Linux-rockchip@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-rockchip
>
>
>


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