Currently, if an odd divider improves the deviation (minimizes it), we
take that divider. The recommendation is to prefer even dividers.
Signed-off-by: Damien Lespiau <damien.lesp...@intel.com>
---
drivers/gpu/drm/i915/intel_ddi.c | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/drivers/gpu/drm/i915/intel_ddi.c b/drivers/gpu/drm/i915/intel_ddi.c
index 381a8c9..54344c3 100644
--- a/drivers/gpu/drm/i915/intel_ddi.c
+++ b/drivers/gpu/drm/i915/intel_ddi.c
@@ -1308,6 +1308,13 @@ skl_ddi_calculate_wrpll(int clock /* in Hz */,
dco_freq,
p);
}
+
+ /*
+ * If a solution is found with an even divider, prefer
+ * this one.
+ */
+ if (d == 0 && ctx.p)
+ break;
}
}
--
2.1.0
_______________________________________________
Intel-gfx mailing list
Intel-gfx@lists.freedesktop.org
http://lists.freedesktop.org/mailman/listinfo/intel-gfx
