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drm/amd/display: Add pixel_clock to amd_pp_display_configuration

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This commit adds the pixel_clock field to the display config
struct so that power management (DPM) can use it.

We currently don't have a proper bandwidth calculation on old
GPUs with DCE 6-10 because dce_calcs only supports DCE 11+.
So the power management (DPM) on these GPUs may need to make
ad-hoc decisions for display based on the pixel clock.

Also rename sym_clock to pixel_clock in dm_pp_single_disp_config
to avoid confusion with other code where the sym_clock refers to
the DisplayPort symbol clock.

Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Timur Kristóf
2025-09-09 16:17:50 +02:00
committed by Alex Deucher
parent 92d6295a29
commit b515dcb0dc
4 changed files with 4 additions and 2 deletions
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drivers/gpu/drm/amd/include/dm_pp_interface.h
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@@ -65,6 +65,7 @@ struct single_display_configuration {
uint32_t view_resolution_cy;
enum amd_pp_display_config_type displayconfigtype;
uint32_t vertical_refresh; /* for active display */
uint32_t pixel_clock; /* Pixel clock in KHz (for HDMI only: normalized) */
};
#define MAX_NUM_DISPLAY 32