linux-kernel - RE: [PATCH] drm: Add FEC registers for LT-tunable repeaters

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Date:   Thu, 5 Dec 2019 15:12:21 +0000
From:   "Liu, Zhan" <Zhan.Liu@....com>
To:     "Siqueira, Rodrigo" <Rodrigo.Siqueira@....com>,
        "=dri-devel@...ts.freedesktop.org" <=dri-devel@...ts.freedesktop.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "amd-gfx@...ts.freedesktop.org" <amd-gfx@...ts.freedesktop.org>
CC:     "Li, Sun peng (Leo)" <Sunpeng.Li@....com>,
        "Berthe, Abdoulaye" <Abdoulaye.Berthe@....com>,
        Jani Nikula <jani.nikula@...ux.intel.com>,
        "Cornij, Nikola" <Nikola.Cornij@....com>,
        Manasi Navare <manasi.d.navare@...el.com>,
        "Wentland, Harry" <Harry.Wentland@....com>,
        Ville Syrjälä <ville.syrjala@...ux.intel.com>
Subject: RE: [PATCH] drm: Add FEC registers for LT-tunable repeaters



> -----Original Message-----
> From: amd-gfx <amd-gfx-bounces@...ts.freedesktop.org> On Behalf Of
> Rodrigo Siqueira
> Sent: 2019/December/05, Thursday 8:59 AM
> To: =dri-devel@...ts.freedesktop.org; linux-kernel@...r.kernel.org; amd-
> gfx@...ts.freedesktop.org
> Cc: Li, Sun peng (Leo) <Sunpeng.Li@....com>; Berthe, Abdoulaye
> <Abdoulaye.Berthe@....com>; Jani Nikula <jani.nikula@...ux.intel.com>;
> Cornij, Nikola <Nikola.Cornij@....com>; Manasi Navare
> <manasi.d.navare@...el.com>; Wentland, Harry
> <Harry.Wentland@....com>; Ville Syrjälä <ville.syrjala@...ux.intel.com>
> Subject: [PATCH] drm: Add FEC registers for LT-tunable repeaters
> 
> FEC is supported since DP 1.4, and it was expanded for LT-tunable in DP 1.4a.
> This commit adds the address registers for
> FEC_ERROR_COUNT_PHY_REPEATER1 and
> FEC_CAPABILITY_PHY_REPEATER1.
> 
> Cc: Abdoulaye Berthe <Abdoulaye.Berthe@....com>
> Cc: Harry Wentland <harry.wentland@....com>
> Cc: Leo Li <sunpeng.li@....com>
> Cc: Jani Nikula <jani.nikula@...ux.intel.com>
> Cc: Manasi Navare <manasi.d.navare@...el.com>
> Cc: Ville Syrjälä <ville.syrjala@...ux.intel.com>
> Signed-off-by: Abdoulaye Berthe <Abdoulaye.Berthe@....com>
> Signed-off-by: Rodrigo Siqueira <Rodrigo.Siqueira@....com>

Looks good to me.
Reviewed-by: Zhan Liu <zhan.liu@....com>

> ---
>  include/drm/drm_dp_helper.h | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/include/drm/drm_dp_helper.h b/include/drm/drm_dp_helper.h
> index 51ecb5112ef8..b2057009aabc 100644
> --- a/include/drm/drm_dp_helper.h
> +++ b/include/drm/drm_dp_helper.h
> @@ -1042,6 +1042,8 @@
>  #define DP_SYMBOL_ERROR_COUNT_LANE2_PHY_REPEATER1
> 0xf0039 /* 1.3 */
>  #define DP_SYMBOL_ERROR_COUNT_LANE3_PHY_REPEATER1
> 0xf003b /* 1.3 */
>  #define DP_FEC_STATUS_PHY_REPEATER1			    0xf0290 /*
> 1.4 */
> +#define DP_FEC_ERROR_COUNT_PHY_REPEATER1                    0xf0291 /*
> 1.4 */
> +#define DP_FEC_CAPABILITY_PHY_REPEATER1                     0xf0294 /* 1.4a
> */
> 
>  /* Repeater modes */
>  #define DP_PHY_REPEATER_MODE_TRANSPARENT		    0x55    /*
> 1.3 */
> --
> 2.24.0
> 
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