linux-kernel - Re: [PATCH] drm/mediatek: Fix DPI component detection for MT8192

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Message-ID: <5d1eddf2bd7c30c3d3e76edecf8096968aaaaef0.camel@mediatek.com>
Date:   Mon, 28 Mar 2022 16:30:32 +0800
From:   CK Hu <ck.hu@...iatek.com>
To:     Chen-Yu Tsai <wenst@...omium.org>,
        Chun-Kuang Hu <chunkuang.hu@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        "David Airlie" <airlied@...ux.ie>, Daniel Vetter <daniel@...ll.ch>,
        "Matthias Brugger" <matthias.bgg@...il.com>
CC:     <linux-kernel@...r.kernel.org>,
        <linux-mediatek@...ts.infradead.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <dri-devel@...ts.freedesktop.org>
Subject: Re: [PATCH] drm/mediatek: Fix DPI component detection for MT8192

Hi, Chen-Yu:

On Fri, 2022-02-25 at 11:27 +0800, Chen-Yu Tsai wrote:
> When support for MT8192 was added, the DPI device was not added to
> the
> list of components to look for. This causes the secondary display
> pipeline to not be able to fully bind, and the DRM driver
> subsequently
> defers probing.
> 
> Add the DPI device compatible to list of DPI components to fix this.

Reviewed-by: CK Hu <ck.hu@...iatek.com>

> 
> Fixes: 01365f549c88 ("drm/mediatek: Add support for Mediatek SoC
> MT8192")
> Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
> ---
>  drivers/gpu/drm/mediatek/mtk_drm_drv.c | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> index b147797177c6..47ba18cbc5c8 100644
> --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c
> @@ -511,6 +511,8 @@ static const struct of_device_id
> mtk_ddp_comp_dt_ids[] = {
>  	  .data = (void *)MTK_DPI },
>  	{ .compatible = "mediatek,mt8183-dpi",
>  	  .data = (void *)MTK_DPI },
> +	{ .compatible = "mediatek,mt8192-dpi",
> +	  .data = (void *)MTK_DPI },
>  	{ .compatible = "mediatek,mt2701-dsi",
>  	  .data = (void *)MTK_DSI },
>  	{ .compatible = "mediatek,mt8173-dsi",