Re: [PATCH] drm: Add LT-tunable PHY repeater mode operations

[Ville Syrjälä]

On Tue, Oct 15, 2019 at 01:40:12PM +0000, Siqueira, Rodrigo wrote:
> LT-tunable PHY Repeaters can operate in two different modes: transparent
> (default) and non-transparent. The value 0x55 specifies the transparent
> mode, and 0xaa represents the non-transparent; this commit adds these
> two values as definitions.
> 
> Cc: Abdoulaye Berthe <Abdoulaye.Berthe@xxxxxxx>
> Cc: Harry Wentland <harry.wentland@xxxxxxx>
> Cc: Leo Li <sunpeng.li@xxxxxxx>
> Cc: Jani Nikula <jani.nikula@xxxxxxxxxxxxxxx>
> Cc: Manasi Navare <manasi.d.navare@xxxxxxxxx>
> Cc: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>
> Signed-off-by: Abdoulaye Berthe <Abdoulaye.Berthe@xxxxxxx>
> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@xxxxxxx>

Reviewed-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx>

> ---
>  include/drm/drm_dp_helper.h | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index bf62b43aaf2b..cfadeeef8492 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -1034,6 +1034,10 @@
>  #define DP_SYMBOL_ERROR_COUNT_LANE3_PHY_REPEATER1	    0xf003b /* 1.3 */
>  #define DP_FEC_STATUS_PHY_REPEATER1			    0xf0290 /* 1.4 */
>  
> +/* Repeater modes */
> +#define DP_PHY_REPEATER_MODE_TRANSPARENT		    0x55    /* 1.3 */
> +#define DP_PHY_REPEATER_MODE_NON_TRANSPARENT		    0xaa    /* 1.3 */
> +
>  /* DP HDCP message start offsets in DPCD address space */
>  #define DP_HDCP_2_2_AKE_INIT_OFFSET		DP_HDCP_2_2_REG_RTX_OFFSET
>  #define DP_HDCP_2_2_AKE_SEND_CERT_OFFSET	DP_HDCP_2_2_REG_CERT_RX_OFFSET
> -- 
> 2.23.0



-- 
Ville Syrjälä
Intel