Fangzhi Zuo e0dec00f3d drm/amd/display: Fix pbn to kbps Conversion ...

[Why]
Existing routine has two conversion sequence,
pbn_to_kbps and kbps_to_pbn with margin.
Non of those has without-margin calculation.

kbps_to_pbn with margin conversion includes
fec overhead which has already been included in
pbn_div calculation with 0.994 factor considered.
It is a double counted fec overhead factor that causes
potential bw loss.

[How]
Add without-margin calculation.
Fix fec overhead double counted issue.

Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3735
Reviewed-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Ivan Lipski <ivan.lipski@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

2025-11-18 10:51:50 -05:00

..

drm

drm/amd/display: Fix pbn to kbps Conversion

2025-11-18 10:51:50 -05:00

host1x

gpu: host1x: Use dev_err_probe() in probe path

2025-09-11 19:12:53 +02:00

ipu-v3

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nova-core

Merge tag 'drm-next-2025-10-01' of https://gitlab.freedesktop.org/drm/kernel

2025-10-02 12:47:25 -07:00

trace

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vga

vga_switcheroo: Use pci_is_display()

2025-07-17 15:30:13 -05:00

Makefile

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