[PATCH] drm/mediatek: mtk_dsi: Add support for High Speed (HS) mode

[Gary Bisson]

On Thu, Jan 08, 2026 at 11:19:59AM +0100, AngeloGioacchino Del Regno wrote:
> Up until now, the MediaTek DSI Controller has always been working
> in Low Power Mode (LPM), as this driver has always ignored the
> MIPI_DSI_MSG_USE_LPM flag hence never setting HS mode.
> 
> In the current state of the driver the only thing that is needed
> to add support for DSI High Speed (HS) transmit is to simply set
> the "HSTX" config bit in the configuration register.
> 
> Check if flag MIPI_DSI_MSG_USE_LPM is set and, if not, set HSTX.
> 
> Signed-off-by: AngeloGioacchino Del Regno <angelogioacchino.delregno at collabora.com>

Tested-by: Gary Bisson <bisson.gary at gmail.com>

This patch was needed for the TI SN65DSI83 DSI to LVDS bridge to work as
it requires HS mode.

Regards,
Gary