[PATCH] drm/amdgpu: adjust default display clock

[zhoucm1]

Acked-by: Chunming Zhou <david1.zhou at amd.com>

On 2017年06月20日 01:36, Alex Deucher wrote:
> ping.
>
> On Thu, Jun 15, 2017 at 11:17 AM, Alex Deucher <alexdeucher at gmail.com> wrote:
>> Increase the default display clock on newer asics to
>> accomodate some high res modes with really high refresh
>> rates.
>>
>> bug: https://bugs.freedesktop.org/show_bug.cgi?id=93826
>> Signed-off-by: Alex Deucher <alexander.deucher at amd.com>
>> Cc: stable at vger.kernel.org
>> ---
>>   drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c | 4 ++++
>>   1 file changed, 4 insertions(+)
>>
>> diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>> index 1cf78f4..1e8e112 100644
>> --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>> +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_atombios.c
>> @@ -693,6 +693,10 @@ int amdgpu_atombios_get_clock_info(struct amdgpu_device *adev)
>>                          DRM_INFO("Changing default dispclk from %dMhz to 600Mhz\n",
>>                                   adev->clock.default_dispclk / 100);
>>                          adev->clock.default_dispclk = 60000;
>> +               } else if (adev->clock.default_dispclk <= 60000) {
>> +                       DRM_INFO("Changing default dispclk from %dMhz to 625Mhz\n",
>> +                                adev->clock.default_dispclk / 100);
>> +                       adev->clock.default_dispclk = 62500;
>>                  }
>>                  adev->clock.dp_extclk =
>>                          le16_to_cpu(firmware_info->info_21.usUniphyDPModeExtClkFreq);
>> --
>> 2.5.5
>>
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