[Nouveau] [Bug 66176] nouveau.perflvl kernel parameter doesn't work

bugzilla-daemon at freedesktop.org bugzilla-daemon at freedesktop.org
Thu Jun 27 06:04:53 PDT 2013


https://bugs.freedesktop.org/show_bug.cgi?id=66176

--- Comment #6 from Emil Velikov <emil.l.velikov at gmail.com> ---
Although that seems too much as a start. Thus it would be nice to get the
non-memory engine(s) reclock first and then deal with memory/timings/etc

This can be done by forcing current code to ignore the memory clock stored in
vbios, i.e.

diff --git a/drm/nv40_pm.c b/drm/nv40_pm.c
index 3af5bcd..0be61db 100644
--- a/drm/nv40_pm.c
+++ b/drm/nv40_pm.c
@@ -191,7 +191,7 @@ nv40_pm_clocks_pre(struct drm_device *dev, struct
nouveau_pm_level *perflvl)
     }

     /* memory clock */
-    if (!perflvl->memory) {
+    if (1) {
         info->mpll_ctrl = 0x00000000;
         goto out;
     }

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