On Mon, Jul 27, 2026 at 04:08:42PM +0800, Jun Nie wrote:
> Some devices treat two independent physical DSI panels as a single
> logical panel from the CRTC's perspective. However, two separate DSI
> hosts are still required to drive the panels individually.
>
> Introduce a `dual_panel` flag to the `mipi_dsi_device` struct. This
> allows a panel driver to inform the DSI host that it is part of a
> dual-panel setup, enabling the host to coordinate both physical
> displays as one.
>
> This change does not force individual panel driver to manage
> system-level display topology if the driver does not intended to
> support dual panel topology. Only the driver that set the flag to
> true need to take care of panel topology.
>
> Signed-off-by: Jun Nie <[email protected]>
> ---
> include/drm/drm_mipi_dsi.h | 2 ++
> 1 file changed, 2 insertions(+)
Do you have a single MIPI DSI device, or are there two independent MIPI
DSI devices? In the latter case, the flag is wrongly placed.
>
> diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
> index 2ab651a36115d..889ef1421207a 100644
> --- a/include/drm/drm_mipi_dsi.h
> +++ b/include/drm/drm_mipi_dsi.h
> @@ -169,6 +169,7 @@ struct mipi_dsi_device_info {
> * @host: DSI host for this peripheral
> * @dev: driver model device node for this peripheral
> * @attached: the DSI device has been successfully attached
> + * @dual_panel: the DSI device is one instance of dual panel
> * @name: DSI peripheral chip type
> * @channel: virtual channel assigned to the peripheral
> * @format: pixel format for video mode
> @@ -186,6 +187,7 @@ struct mipi_dsi_device {
> struct mipi_dsi_host *host;
> struct device dev;
> bool attached;
> + bool dual_panel;
>
> char name[DSI_DEV_NAME_SIZE];
> unsigned int channel;
>
> --
> 2.43.0
>
--
With best wishes
Dmitry
