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| author | Nevenko Stupar <Nevenko.Stupar@amd.com> | 2026-08-27 15:56:41 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2026-09-10 12:03:34 -0400 |
| commit | ab796810df23c4c0b68db0b462b6609977b024fe (patch) | |
| tree | 79abf3da79a0218b3aa3c02ca236016f10c42dc6 | |
| parent | ccae4798faa28eee9aca31e9ee5aef7843f6c81c (diff) | |
| download | linux-next-ab796810df23c4c0b68db0b462b6609977b024fe.tar.gz linux-next-ab796810df23c4c0b68db0b462b6609977b024fe.zip | |
drm/amd/display: Fix DC Hub reference frequency assert range
[Why & How]
The DC Hub reference frequency valid range was asserted incorrectly.
Correct the range to 20 to 50 MHz and update the comment accordingly.
Reviewed-by: Sridevi Arvindekar <sridevi.arvindekar@amd.com>
Reviewed-by: Dillon Varone <dillon.varone@amd.com>
Signed-off-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c b/drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c index 053a08b6d3a3..9fb2907361c3 100644 --- a/drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c +++ b/drivers/gpu/drm/amd/display/dc/hubbub/dcn20/dcn20_hubbub.c @@ -574,9 +574,8 @@ void hubbub2_get_dchub_ref_freq(struct hubbub *hubbub, else *dchub_ref_freq_inKhz = dccg_ref_freq_inKhz; - // DC hub reference frequency must be around 50Mhz, otherwise there may be - // overflow/underflow issues when doing HUBBUB programming - if (*dchub_ref_freq_inKhz < 40000 || *dchub_ref_freq_inKhz > 60000) + // DC Hub reference frequency valid range is 20 to 50 MHz + if (*dchub_ref_freq_inKhz < 20000 || *dchub_ref_freq_inKhz > 50000) ASSERT_CRITICAL(false); return; |