drm/radeon: improve mclk param calcuations for ci dpm
Properly take into account the post divider.
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
diff --git a/drivers/gpu/drm/radeon/ci_dpm.c b/drivers/gpu/drm/radeon/ci_dpm.c
index 4dd8f357..3705d13 100644
--- a/drivers/gpu/drm/radeon/ci_dpm.c
+++ b/drivers/gpu/drm/radeon/ci_dpm.c
@@ -2409,10 +2409,10 @@
u32 tmp;
u32 reference_clock = rdev->clock.mpll.reference_freq;
- if (pi->mem_gddr5)
- freq_nom = memory_clock * 4;
+ if (mpll_param.qdr == 1)
+ freq_nom = memory_clock * 4 * (1 << mpll_param.post_div);
else
- freq_nom = memory_clock * 2;
+ freq_nom = memory_clock * 2 * (1 << mpll_param.post_div);
tmp = (freq_nom / reference_clock);
tmp = tmp * tmp;