https://bugzilla.kernel.org/show_bug.cgi?id=82781
--- Comment #11 from Christian Birchinger <joker at netswarm.net> ---
Simply doing this also works:
ni_dpm.c:
bool ni_dpm_vblank_too_short(struct radeon_device *rdev)
{
struct rv7xx_power_info *pi = rv770_get_pi(rdev);
u32 vblank_time = r600_dpm_get_vblank_time(rdev);
/* we never hit the non-gddr5 limit so disable it */
u32 switch_limit = pi->mem_gddr5 ? 450 : 0;
return true;
Adding a hardcoded true also disables mclk changes. which only leads
to one conclusion:
if (vblank_time <= switch_limit)
return true;
else
return false;
Somehow the values are not always 450 but i cannot see such a case
in the printk debug.
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