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From: vathsala nagaraju <vathsala.nagaraju@intel.com>
To: Jani Nikula <jani.nikula@linux.intel.com>,
	rodrigo.vivi@intel.com, dri-devel@lists.freedesktop.org,
	intel-gfx@lists.freedesktop.org
Cc: Puthikorn Voravootivat <puthik@chromium.org>
Subject: Re: [PATCH 1/2] drm/dp: Add defines for latency in sink
Date: Mon, 25 Sep 2017 14:31:38 +0530	[thread overview]
Message-ID: <59C8C5F2.20806@intel.com> (raw)
In-Reply-To: <87efqv5gqp.fsf@nikula.org>


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On Monday 25 September 2017 01:53 PM, Jani Nikula wrote:
> On Sat, 23 Sep 2017, vathsala nagaraju <vathsala.nagaraju@intel.com> wrote:
>> Add defines for dpcd register 2009 (synchronization latency
>> in sink).
>>
>> Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
>> CC: Puthikorn Voravootivat <puthik@chromium.org>
>> Reviewed-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
>> Signed-off-by: Vathsala Nagaraju <vathsala.nagaraju@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
> For the DP spec, please don't invent the names, use the ones from the
> spec. At most drop excess stuff from the end.
In edp 1.4b spec , the register name 2009 is "DEBUG 0 SYNCHRONIZATION 
LATENCY SINK "  and bit 0:3 "MAX RE-SYNC FRAME COUNT"
>
> #define DP_SYNCHRONIZATION_LATENCY_IN_SINK
> # define DP_MAX_RESYNC_FRAME_COUNT_SHIFT
> # define DP_MAX_RESYNC_FRAME_COUNT_MASK
>
> And while at it, please add the full register contents.
>
> BR,
> Jani.
>
>> +
>>   #define DP_RECEIVER_ALPM_STATUS		    0x200b  /* eDP 1.4 */
>>   # define DP_ALPM_LOCK_TIMEOUT_ERROR	    (1 << 0)


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_______________________________________________
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  reply	other threads:[~2017-09-25  9:01 UTC|newest]

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-09-23  0:34 [PATCH 1/2] drm/dp: Add defines for latency in sink vathsala nagaraju
2017-09-23  0:34 ` [PATCH 2/2] drm/i915/psr: Set frames before SU entry for psr2 vathsala nagaraju
2017-09-25  8:30   ` [Intel-gfx] " Jani Nikula
2017-09-25  9:10     ` vathsala nagaraju
2017-09-25 16:57       ` Rodrigo Vivi
2017-09-23  0:59 ` ✓ Fi.CI.BAT: success for series starting with [1/2] drm/dp: Add defines for latency in sink Patchwork
2017-09-23  1:56 ` ✓ Fi.CI.IGT: " Patchwork
2017-09-25  8:23 ` [PATCH 1/2] " Jani Nikula
2017-09-25  9:01   ` vathsala nagaraju [this message]
2017-09-25 17:05     ` Rodrigo Vivi
2017-09-25 17:34       ` [Intel-gfx] " Jani Nikula
2017-09-26  8:03   ` Daniel Vetter
  -- strict thread matches above, loose matches on Subject: below --
2017-09-26  9:59 vathsala nagaraju
2017-09-20 14:32 vathsala nagaraju
2017-09-20 22:07 ` Rodrigo Vivi
2017-09-21 14:42 ` Rodrigo Vivi
2017-09-26  5:11   ` Daniel Vetter
2017-09-26 17:37     ` Puthikorn Voravootivat
2017-09-26 20:37       ` Puthikorn Voravootivat

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