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drm/amdgpu: Use DC by default on CIK APUs

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Now that DC supports external DP bridge encoders,
it has reached feature parity with the legacy non-DC display
driver on CIK APUs: Kaveri, Kabini, Mullins.

Use the DC display driver by default on SI APUs, unless it is
explicitly disabled using the amdgpu.dc=0 module parameter.

DC brings proper support for DP/HDMI audio, DP MST, VRR,
10-bit colors, some HDR features, atomic modesetting, etc.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Reviewed-by: Alex Hung <alex.hung@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf
2026-01-26 22:08:37 +01:00
committed by Alex Deucher
parent 213f95dca4
commit c81f35cdba
1 changed files with 0 additions and 11 deletions
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11
drivers/gpu/drm/amd/amdgpu/amdgpu_device.c
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@@ -4105,17 +4105,6 @@ bool amdgpu_device_asic_has_dc_support(struct pci_dev *pdev,
case CHIP_VERDE:
case CHIP_OLAND:
return amdgpu_dc != 0 && IS_ENABLED(CONFIG_DRM_AMD_DC_SI);
case CHIP_KAVERI:
case CHIP_KABINI:
case CHIP_MULLINS:
/*
* We have systems in the wild with these ASICs that require
* TRAVIS and NUTMEG support which is not supported with DC.
*
* Fallback to the non-DC driver here by default so as not to
* cause regressions.
*/
return amdgpu_dc > 0;
default:
return amdgpu_dc != 0;
#else