[PATCH 1/2] drm/dp: Add defines for latency in sink

[Rodrigo Vivi]

On Wed, Sep 20, 2017 at 02:32:34PM +0000, vathsala nagaraju wrote:
> Add defines for dpcd register 2009 (synchronization latency
> in sink).
> 
> Cc: Rodrigo Vivi <rodrigo.vivi at intel.com>
> CC: Puthikorn Voravootivat <puthik at chromium.org>
> Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju at intel.com>
> ---
>  include/drm/drm_dp_helper.h | 3 +++
>  1 file changed, 3 insertions(+)
> 
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index 11c39f1..846004e6 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -735,6 +735,9 @@
>  # define DP_PSR_SINK_INTERNAL_ERROR         7
>  # define DP_PSR_SINK_STATE_MASK             0x07
>  
> +#define DP_SINK_SYNCHRONIZATION_LATENCY	    0x2009
> +# define DP_MAX_RESYNC_FRAME_CNT_MASK	    0xf

where did you get that?
eDP 1.4 teels 2009h is a debug register.

> +
>  #define DP_RECEIVER_ALPM_STATUS		    0x200b  /* eDP 1.4 */
>  # define DP_ALPM_LOCK_TIMEOUT_ERROR	    (1 << 0)
>  
> -- 
> 1.9.1
>