drm/i915: Always program m2 fractional value on CHV
When fractional m2 divider isn't used on CHV the fractional part
is ignore by the hardware. Despite that, program the fractional
value (0 in this case) to the hardware register just to keep
things a bit more consistent. Might at least make register dumps
a bit less confusing when there isn't some stale fractional part
hanging around.
Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c
index cf8dfa5..a64da67 100644
--- a/drivers/gpu/drm/i915/intel_display.c
+++ b/drivers/gpu/drm/i915/intel_display.c
@@ -7374,8 +7374,7 @@
1 << DPIO_CHV_N_DIV_SHIFT);
/* M2 fraction division */
- if (bestm2_frac)
- vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
+ vlv_dpio_write(dev_priv, pipe, CHV_PLL_DW2(port), bestm2_frac);
/* M2 fraction division enable */
dpio_val = vlv_dpio_read(dev_priv, pipe, CHV_PLL_DW3(port));