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From: Jani Nikula <jani.nikula@intel.com>
To: "Yang, Libin" <libin.yang@intel.com>,
	"Lin, Mengdong" <mengdong.lin@intel.com>,
	"intel-gfx@lists.freedesktop.org"
	<intel-gfx@lists.freedesktop.org>
Cc: "Zhang, Keqiao" <keqiao.zhang@intel.com>,
	"libin.yang@linux.intel.com" <libin.yang@linux.intel.com>,
	"Pandiyan, Dhinakaran" <dhinakaran.pandiyan@intel.com>,
	"Zhao, Juan J" <juan.j.zhao@intel.com>
Subject: Re: [PATCH RESEND 9/9] drm/i915: set proper N/M in modeset
Date: Thu, 20 Oct 2016 14:34:34 +0300	[thread overview]
Message-ID: <87twc7qmnp.fsf@intel.com> (raw)
In-Reply-To: <96A12704CE18D347B625EE2D4A099D194FA49C8E@SHSMSX103.ccr.corp.intel.com>

On Thu, 20 Oct 2016, "Yang, Libin" <libin.yang@intel.com> wrote:
>> >> Any particular reason these M/N values are half of what they're in
>> >> table
>> >> 2-104 of DP 1.4 spec? (Admittedly the table is an informative
>> >> example.)
>> >
>> > For HDMI, we found only set N is enough. HW then can handle the
>> remaining.
>> 
>> I meant, the M and N values in this part of the dp_aud_n_m table are 1/2 of
>> what they are in the DP spec table. Why?
>
> Which table are you meaning? I calculate the values myself. I didn't find the
> full table in DP spec. I only find the table for 270MHz and 162MHz in 
> Table 2-50: Examples of Maud and Naud Values

Table 2-104 in DP 1.4. Maybe you're looking at an older version of the
spec.

BR,
Jani.


-- 
Jani Nikula, Intel Open Source Technology Center
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  reply	other threads:[~2016-10-20 11:34 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-10-10 15:03 [PATCH RESEND 0/9] drm/i915/audio: audio cleanups, 4k fixes Jani Nikula
2016-10-10 15:04 ` [PATCH RESEND 1/9] drm/i915/audio: abstract audio config update Jani Nikula
2016-10-11  1:59   ` Yang, Libin
2016-10-10 15:04 ` [PATCH RESEND 2/9] drm/i915/audio: port is going to be just fine, simplify checks Jani Nikula
2016-10-11  2:37   ` Yang, Libin
2016-10-10 15:04 ` [PATCH RESEND 3/9] drm/i915/audio: use the same code for updating audio config Jani Nikula
2016-10-11  5:25   ` Yang, Libin
2016-10-10 15:04 ` [PATCH RESEND 4/9] drm/i915/audio: split dp and hdmi audio config update Jani Nikula
2016-10-11  5:42   ` Yang, Libin
2016-10-10 15:04 ` [PATCH RESEND 5/9] drm/i915/audio: set proper N/MCTS on more platforms Jani Nikula
2016-10-10 15:04 ` [PATCH RESEND 6/9] drm/i915/audio: HDMI audio gets the TMDS clock by crtc_clock Jani Nikula
2016-10-10 15:04 ` [PATCH RESEND 7/9] drm/i915/audio: add register macros for audio config N value Jani Nikula
2016-10-11  5:52   ` Yang, Libin
2016-10-10 15:04 ` [PATCH RESEND 8/9] drm/i915/audio: rename N value getter to emphasize it's for hdmi Jani Nikula
2016-10-11  5:55   ` Yang, Libin
2016-10-11 14:25     ` Jani Nikula
2016-10-10 15:04 ` [PATCH RESEND 9/9] drm/i915: set proper N/M in modeset Jani Nikula
2016-10-12  2:45   ` Lin, Mengdong
2016-10-12  6:29     ` Yang, Libin
2016-10-19 15:08       ` Jani Nikula
2016-10-20  2:00         ` Yang, Libin
2016-10-20  8:33           ` Jani Nikula
2016-10-20  8:42             ` Yang, Libin
2016-10-20 11:34               ` Jani Nikula [this message]
2016-10-20 12:02                 ` Ville Syrjälä
2016-10-21  6:47                   ` Yang, Libin
2016-10-21  6:21                 ` Yang, Libin
2016-10-12  6:41   ` Zhang, Keqiao
2016-10-10 18:19 ` ✗ Fi.CI.BAT: warning for drm/i915/audio: audio cleanups, 4k fixes (rev3) Patchwork

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