[PATCH v3 0/3] add LG panel to dpcd quirk database

Jani Nikula jani.nikula at intel.com
Wed Sep 12 09:06:27 UTC 2018


On Tue, 11 Sep 2018, Clint Taylor <clinton.a.taylor at intel.com> wrote:
> On 09/11/2018 01:56 AM, Lee, Shawn C wrote:
>> Only specific N value (0x8000) would be acceptable for LG
>> LP140WF6-SPM1 eDP panel which is running at asynchronous
>> clock mode. With the other N value, it will enter BITS mode
>> and display black screen. This patch series set constant N
>> value for specific sink/branch device that would cover
>> similar issue.
>>
>> Cc: Jani Nikula <jani.nikula at intel.com>
>> Cc: Cooper Chiou <cooper.chiou at intel.com>
>> Cc: Matt Atwood <matthew.s.atwood at intel.com>
>> Cc: Maarten Lankhorst <maarten.lankhorst at linux.intel.com>
>> Cc: Dhinakaran Pandiyan <dhinakaran.pandiyan at intel.com>
>> Cc: Clint Taylor <clinton.a.taylor at intel.com>
>>
>> Lee, Shawn C (3):
>>    drm: Add support for device_id based detection.
>>    drm: Change limited M/N quirk to constant N quirk.
>>    drm: add LG eDP panel to quirk database
>>
>>   drivers/gpu/drm/drm_dp_helper.c      | 17 ++++++++++++++++-
>>   drivers/gpu/drm/i915/intel_display.c | 28 +++++++++++++---------------
>>   drivers/gpu/drm/i915/intel_display.h |  2 +-
>>   drivers/gpu/drm/i915/intel_dp.c      |  8 ++++----
>>   drivers/gpu/drm/i915/intel_dp_mst.c  |  6 +++---
>>   include/drm/drm_dp_helper.h          |  6 +++---
>>   6 files changed, 40 insertions(+), 27 deletions(-)
>>
>
> Tested quirk on Analogix 7737 based USB_C->HDMI dongle that the original 
> Limited M/N quirk was designed around. New quirk appears to work correctly.

Thanks a lot for this!

BR,
Jani.

-- 
Jani Nikula, Intel Open Source Graphics Center


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