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Message-ID: <CAL_Jsq+6rx0UU6ryH+z_8KLQqKKuhTCnh=Oft2F03bcze+EV0Q@mail.gmail.com>
Date:   Mon, 28 Mar 2022 13:21:33 -0500
From:   Rob Herring <robh+dt@...nel.org>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Cc:     Vinod Koul <vkoul@...nel.org>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        Rob Clark <robdclark@...il.com>, Sean Paul <sean@...rly.run>,
        Abhinav Kumar <quic_abhinavk@...cinc.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Krzysztof Kozlowski <krzk+dt@...nel.org>,
        Krishna Manikandan <mkrishn@...eaurora.org>,
        linux-arm-msm <linux-arm-msm@...r.kernel.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        freedreno <freedreno@...ts.freedesktop.org>,
        devicetree@...r.kernel.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] dt-bindings: display: msm: dsi: remove address/size cells

On Mon, Mar 28, 2022 at 12:18 PM Krzysztof Kozlowski
<krzysztof.kozlowski@...aro.org> wrote:
>
> On 28/03/2022 19:16, Vinod Koul wrote:
> > On 28-03-22, 19:43, Dmitry Baryshkov wrote:
> >> On Mon, 28 Mar 2022 at 18:30, Krzysztof Kozlowski
> >> <krzysztof.kozlowski@...aro.org> wrote:
> >>>
> >>> The DSI node is not a bus and the children do not have unit addresses.
> >>>
> >>> Reported-by: Vinod Koul <vkoul@...nel.org>
> >>> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> >>
> >> NAK.
> >> DSI panels are children of the DSI device tree node with the reg = <0>; address.
> >> This is the convention used by other platforms too (see e.g.
> >> arch/arm64/boot/dts/freescale/imx8mq-evk.dts).
> >
> > So we should add reg = 0, i will update my dtsi fix
> >
>
> To "ports" node? No. The reg=0 is for children of the bus, so the
> panels. How to combine both without warnings - ports and panel@0 - I
> don't know yet...

I don't think that should case a warning. Or at least it's one we turn off.

Rob

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