Re: [PATCH] drm/panel: ilitek-ili9882t: Select DRM_DISPLAY_DSC_HELPER

[Nicolas Frattaroli <nicolas.frattaroli@collabora.com>]

On Thursday, 15 January 2026 13:50:48 Central European Standard Time Maíra Canal wrote:
> The panel-ilitek-ili9882t driver uses drm_dsc_pps_payload_pack() which
> is provided by the DRM_DISPLAY_DSC_HELPER. Add the missing Kconfig
> select to fix the following build error:
> 
>   ERROR: modpost: "drm_dsc_pps_payload_pack" [drivers/gpu/drm/panel/panel-ilitek-ili9882t.ko] undefined!
> 
> Fixes: 65ce1f5834e9 ("drm/panel: ilitek-ili9882t: Switch Tianma TL121BVMS07 to DSC 120Hz mode")
> Signed-off-by: Maíra Canal <mcanal@igalia.com>
> ---
>  drivers/gpu/drm/panel/Kconfig | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/drivers/gpu/drm/panel/Kconfig b/drivers/gpu/drm/panel/Kconfig
> index a0fe6069e5e4..ae25f003aa33 100644
> --- a/drivers/gpu/drm/panel/Kconfig
> +++ b/drivers/gpu/drm/panel/Kconfig
> @@ -280,6 +280,7 @@ config DRM_PANEL_ILITEK_ILI9882T
>  	depends on OF
>  	depends on DRM_MIPI_DSI
>  	depends on BACKLIGHT_CLASS_DEVICE
> +	select DRM_DISPLAY_DSC_HELPER
>  	help
>  	  Say Y if you want to enable support for panels based on the
>  	  Ilitek ILI9882t controller.
> 

Tested-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>
Reviewed-by: Nicolas Frattaroli <nicolas.frattaroli@collabora.com>

Thanks, this build failure has been annoying me for the past few days,
can confirm it works as described and the fix makes sense.