linux-kernel - Re: [PATCH v2 1/3] dt-bindings: mediatek: add vdosys1 RDMA definition for mt8195

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Message-ID: <4d2b1c2c4ab27ba96d59b9a0e3adcdab311ec897.camel@mediatek.com>
Date:   Wed, 11 May 2022 10:26:56 +0800
From:   Rex-BC Chen <rex-bc.chen@...iatek.com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        Chen-Yu Tsai <wenst@...omium.org>
CC:     "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "chunkuang.hu@...nel.org" <chunkuang.hu@...nel.org>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "airlied@...ux.ie" <airlied@...ux.ie>,
        "Jason-JH Lin (林睿祥)" 
        <Jason-JH.Lin@...iatek.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
        Project_Global_Chrome_Upstream_Group 
        <Project_Global_Chrome_Upstream_Group@...iatek.com>,
        Nancy Lin (林欣螢) 
        <Nancy.Lin@...iatek.com>,
        "linux-mediatek@...ts.infradead.org" 
        <linux-mediatek@...ts.infradead.org>,
        "matthias.bgg@...il.com" <matthias.bgg@...il.com>,
        "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        "angelogioacchino.delregno@...labora.com" 
        <angelogioacchino.delregno@...labora.com>
Subject: Re: [PATCH v2 1/3] dt-bindings: mediatek: add vdosys1 RDMA
 definition for mt8195

On Tue, 2022-05-10 at 18:57 +0800, Krzysztof Kozlowski wrote:
> On 10/05/2022 12:37, Chen-Yu Tsai wrote:
> > > Use a generic node name, as Devicetree spec asks:
> > > "The name of a node should be somewhat generic, reflecting the
> > > function
> > > of the device and not its precise programming
> > > 
> > > model. If appropriate, the name should be one of the following
> > > choices:"
> > > 
> > > I proposed dma-controller, but feel free to find better generic
> > > node name.
> > 
> > dma-controller is covered by dma-controller.yaml, which references
> > dma-common.yaml in its entirety, so I don't think that would work.
> > 
> > What about "blitter"? I think that is a generic term that is/was
> > commonly
> > used with display hardware and sort of describes the function of
> > the RDMA
> > & WDMA blocks, and if only one side is memory and the other is the
> > display
> > pipeline.
> 
> Sure, sounds fine!
> 
> 
> Best regards,
> Krzysztof

Hello Krzysztof and Chen-Yu,

Nancy thinks our IP is more like rdma.
Blitter may be somthing for reading memory and writing to another
memory, but we don't have the function of writing memory.
If we use rdma, is it ok?

BRs,
Rex