linux-kernel - Re: [PATCH v4 5/5] dt-bindings: display: mediatek: dpi: correct power-domains property

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Message-ID: <20241002015120.GA236278-robh@kernel.org>
Date: Tue, 1 Oct 2024 20:51:20 -0500
From: Rob Herring <robh@...nel.org>
To: Macpaul Lin <macpaul.lin@...iatek.com>
Cc: Chun-Kuang Hu <chunkuang.hu@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Maxime Ripard <mripard@...nel.org>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Yong Wu <yong.wu@...iatek.com>,
	Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Rohit Agarwal <rohiagar@...omium.org>,
	dri-devel@...ts.freedesktop.org, linux-mediatek@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	iommu@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
	Alexandre Mergnat <amergnat@...libre.com>,
	Bear Wang <bear.wang@...iatek.com>,
	Pablo Sun <pablo.sun@...iatek.com>, Macpaul Lin <macpaul@...il.com>,
	Sen Chu <sen.chu@...iatek.com>,
	Chris-qj chen <chris-qj.chen@...iatek.com>,
	MediaTek Chromebook Upstream <Project_Global_Chrome_Upstream_Group@...iatek.com>,
	Chen-Yu Tsai <wenst@...omium.org>,
	Jitao Shi <jitao.shi@...iatek.com>
Subject: Re: [PATCH v4 5/5] dt-bindings: display: mediatek: dpi: correct
 power-domains property

On Mon, Sep 30, 2024 at 04:38:54PM +0800, Macpaul Lin wrote:
> The MediaTek DPI module is typically associated with one of the
> following multimedia power domains:
>  - POWER_DOMAIN_DISPLAY
>  - POWER_DOMAIN_VDOSYS
>  - POWER_DOMAIN_MM
> The specific power domain used varies depending on the SoC design.
> 
> These power domains are shared by multiple devices within the SoC.
> In most cases, these power domains are enabled by other devices.
> As a result, the DPI module of legacy SoCs often functions correctly
> even without explicit configuration.
> 
> It is recommended to explicitly add the appropriate power domain
> property to the DPI node in the device tree. Hence drop the
> compatible checking for specific SoCs.
> 
> Fixes: 5474d49b2f79 ("dt-bindings: display: mediatek: dpi: Add power domains")
> Signed-off-by: Macpaul Lin <macpaul.lin@...iatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@...iatek.com>
> Signed-off-by: Pablo Sun <pablo.sun@...iatek.com>
> ---
>  .../display/mediatek/mediatek,dpi.yaml        | 24 ++++++++-----------
>  1 file changed, 10 insertions(+), 14 deletions(-)

You missed Krzysztof's R-by tag.