diff options
Diffstat (limited to 'drivers/gpu/drm/amd/display/dc/dc.h')
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/dc.h | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/dc.h b/drivers/gpu/drm/amd/display/dc/dc.h index 3450aca538b5..44f8db160520 100644 --- a/drivers/gpu/drm/amd/display/dc/dc.h +++ b/drivers/gpu/drm/amd/display/dc/dc.h @@ -494,9 +494,12 @@ enum dcn_zstate_support_state { DCN_ZSTATE_SUPPORT_ALLOW_Z10_ONLY, DCN_ZSTATE_SUPPORT_DISALLOW, }; -/* - * For any clocks that may differ per pipe - * only the max is stored in this structure + +/** + * dc_clocks - DC pipe clocks + * + * For any clocks that may differ per pipe only the max is stored in this + * structure */ struct dc_clocks { int dispclk_khz; @@ -523,6 +526,16 @@ struct dc_clocks { bool prev_p_state_change_support; bool fclk_prev_p_state_change_support; int num_ways; + + /** + * @fw_based_mclk_switching + * + * DC has a mechanism that leverage the variable refresh rate to switch + * memory clock in cases that we have a large latency to achieve the + * memory clock change and a short vblank window. DC has some + * requirements to enable this feature, and this field describes if the + * system support or not such a feature. + */ bool fw_based_mclk_switching; bool fw_based_mclk_switching_shut_down; int prev_num_ways; |