2013/6/26 Deucher, Alexander Alexander.Deucher@amd.com:
-----Original Message----- From: Joshua C. [mailto:joshuacov@gmail.com] Sent: Wednesday, June 26, 2013 1:52 PM To: dri-devel@lists.freedesktop.org Cc: Deucher, Alexander Subject: RADEON / DPM: GPU cannot properly up-clock
First of all thank you guys for pushing this out! Great work!
I tried the latest code in drm-next-3.11-wip (up to commit b3c1e0c3ba885db44 "drm/radeon: fix endian issues in atombios dpm code") in connection with the latest radeon_ucode (latest update on 2013-06-26). I also reintroduced the debugfs info so that I can better observe the gpu-settings. For this I put back the following patch:
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c index 7ba5d6f..9367234 100644 --- a/drivers/gpu/drm/radeon/radeon_pm.c +++ b/drivers/gpu/drm/radeon/radeon_pm.c @@ -1066,6 +1066,11 @@ static int radeon_pm_init_dpm(struct radeon_device *rdev) ret = device_create_file(rdev->dev, &dev_attr_power_method); if (ret) DRM_ERROR("failed to create device file for power method\n");
if (radeon_debugfs_pm_init(rdev)) {DRM_ERROR("Failed to register debugfs file for PM!\n");}DRM_INFO("radeon: dpm initialized\n");-- 1.8.2.1
I removed that code for a reason when DPM is active. With DPM the hardware changes the power state dynamically internally so that old debugging information is completely irrelevant when DPM is active.
Alex
I see. Do you have any idea why I see those delays when playing a HD-movie? They do not appear when switching to dynpm. I use the latest llvm(3.4svn), libdrm(2.4.45), mesa(9.2.0 devel), xserver(1.14.99.0), xf86-video-ati(deve) - all fetched from git as of 2013-06-26.
-- --joshua