drm/amd/display: add guard for SMU ver, for 48mhz clk

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[why]
dp_48m_refclk_driver_pwdn is persistent through S3 and S5.
This was worked arround in SMU FW 55.21.0. Earlier FW don't have this fix
so we will hang on reboot

[how]
add a guard for smu versions before SMU FW 55.21.0

Signed-off-by: Joseph Gravenor <joseph.gravenor@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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Joseph Gravenor 2019-09-16 15:13:33 -04:00 • committed by Alex Deucher

parent 57133a28bc

commit ac81c2a75b

1 changed files with 1 additions and 1 deletions

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drivers/gpu/drm/amd/display/dc/clk_mgr/dcn21/rn_clk_mgr.c

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