linux-kernel - Re: [PATCH 4/5] drm/rockchip: dw_dp: Add DisplayPort support for rk3576

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Message-ID: <aWa7GuLKdUcbjA35@venus>
Date: Tue, 13 Jan 2026 22:37:51 +0100
From: Sebastian Reichel <sebastian.reichel@...labora.com>
To: Andy Yan <andyshrk@....com>
Cc: heiko@...ech.de, dmitry.baryshkov@....qualcomm.com, krzk+dt@...nel.org, 
	conor+dt@...nel.org, cristian.ciocaltea@...labora.com, 
	Laurent.pinchart@...asonboard.com, mripard@...nel.org, hjc@...k-chips.com, robh@...nel.org, 
	tzimmermann@...e.de, devicetree@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, linux-rockchip@...ts.infradead.org, 
	Andy Yan <andy.yan@...k-chips.com>
Subject: Re: [PATCH 4/5] drm/rockchip: dw_dp: Add DisplayPort support for
 rk3576

Hi,

On Fri, Jan 09, 2026 at 04:00:47PM +0800, Andy Yan wrote:
> From: Andy Yan <andy.yan@...k-chips.com>
> 
> The DisplayPort of the RK3576 is basically the same as that of the
> RK3588, but it operates in dual-pixel mode and also support MST.
> 
> This patch only enable the SST output now.
> 
> Signed-off-by: Andy Yan <andy.yan@...k-chips.com>
> ---

Reviewed-by: Sebastian Reichel <sebastian.reichel@...labora.com>
Tested-by: Sebastian Reichel <sebastian.reichel@...labora.com>

Greetings,

-- Sebastian

>  drivers/gpu/drm/rockchip/dw_dp-rockchip.c | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
> index 89d614d53596..dac3d202971e 100644
> --- a/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
> +++ b/drivers/gpu/drm/rockchip/dw_dp-rockchip.c
> @@ -142,10 +142,18 @@ static const struct dw_dp_plat_data rk3588_dp_plat_data = {
>  	.pixel_mode = DW_DP_MP_QUAD_PIXEL,
>  };
>  
> +static const struct dw_dp_plat_data rk3576_dp_plat_data = {
> +	.max_link_rate = 810000,
> +	.pixel_mode = DW_DP_MP_DUAL_PIXEL,
> +};
> +
>  static const struct of_device_id dw_dp_of_match[] = {
>  	{
>  		.compatible = "rockchip,rk3588-dp",
>  		.data = &rk3588_dp_plat_data,
> +	}, {
> +		.compatible = "rockchip,rk3576-dp",
> +		.data = &rk3576_dp_plat_data,
>  	},
>  	{}
>  };
> -- 
> 2.43.0
> 

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