is the config_drm_amd_dc kernel option necessary for my card?

[papu]

i not undestand well if that option is usefull for my rx470 artic islands( polaris) graphics card
i think is not for my architecture but i need help to active or not

very tanks!

[agd5f]

You need DC for fully featured display support (audio, DP MST, etc.).

[papu]

You need DC for fully featured display support (audio, DP MST, etc.).

ok , and what exactly options from DISPLAY ENGINE CONFIGURATION i have to activate for optimize my amd rx470 polaris 10 graphics card?

very thanks!

[agd5f]

CONFIG_DRM_AMD_DC is all that is required, but your best bet is to enable both CONFIG_DRM_AMD_DC and CONFIG_DRM_AMD_DC_DCN so that the driver will work with other chips as well.

[papu]

ok thanks, i will only use the CONFIG_DRM_AMD_DC and CONFIG_DRM_AMD_DC_HDCP

what the CONFIG_DRM_AMD_DC_DSC_SUPPORT is for?


thanks a lot!

[agd5f]

DSC is for sending compressed data streams over DP to save bandwidth. Your GPU doesn't support it, but new ones do.