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drm/radeon: Fix "slow" audio over DP on DCE8+

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DP audio is derived from the dfs clock.

Signed-off-by: Slava Grigorev <slava.grigorev@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
This commit is contained in:
Slava Grigorev
2015-12-17 11:09:58 -05:00
committed by Alex Deucher
parent ee1782c3f2
commit ac4a9350ab
4 changed files with 29 additions and 0 deletions
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7
drivers/gpu/drm/radeon/radeon_atombios.c
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@@ -1263,6 +1263,13 @@ bool radeon_atom_get_clock_info(struct drm_device *dev)
rdev->mode_info.firmware_flags =
le16_to_cpu(firmware_info->info.usFirmwareCapability.susAccess);
if (ASIC_IS_DCE8(rdev)) {
rdev->clock.gpupll_outputfreq =
le32_to_cpu(firmware_info->info_22.ulGPUPLL_OutputFreq);
if (rdev->clock.gpupll_outputfreq == 0)
rdev->clock.gpupll_outputfreq = 360000; /* 3.6 GHz */
}
return true;
}