On Tue, Jan 20, 2026 at 08:19:30PM -0300, Fabio Estevam wrote:
> From: Fabio Estevam <[email protected]>
>
> The LVDS Control Register (LVDS_CTRL) register has an HS_EN bit that allows
> the 100 Ohm termination resistor in the chip to be enabled.
>
> Add support to setting the HS_EN bit when the optional property
> "nxp,enable-termination-resistor" is present.
>
> The motivation for introducing this property was a custom i.MX8MP board
> that was showing visual artifacts. After enabling the 100 Ohm termination
> resistor the LVDS signal quality improved causing the artifacts to
> disappear.
>
> Signed-off-by: Fabio Estevam <[email protected]>
> ---
> Changes since v2:
> - Rename variable to 'use_termination_resistor'. (Liu Ying)
> - Remove clearing the LVDS_CTRL_HS_EN bit. (Liu Ying)
> - Use dev->of_node. (Liu Ying)
>
> drivers/gpu/drm/bridge/fsl-ldb.c | 7 +++++++
> 1 file changed, 7 insertions(+)
Reviewed-by: Liu Ying <[email protected]>
Thanks!
--
Regards,
Liu Ying
