3.12-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alex Deucher <alexander.deuc...@amd.com> commit 8097d94116d0c17e774ba4c8256e774018dc2a46 upstream. Mclk switching doesn't seem to work reliably on these cards. Most RV770 boards specify the same mclk for all performance levels anyway so in most cases, this has no affect. Bug: https://bugs.freedesktop.org/show_bug.cgi?id=73067 Signed-off-by: Alex Deucher <alexander.deuc...@amd.com> Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> --- drivers/gpu/drm/radeon/rv770_dpm.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/gpu/drm/radeon/rv770_dpm.c +++ b/drivers/gpu/drm/radeon/rv770_dpm.c @@ -2531,6 +2531,12 @@ bool rv770_dpm_vblank_too_short(struct r (rdev->pdev->subsystem_device == 0x1c42)) switch_limit = 200; + /* RV770 */ + /* mclk switching doesn't seem to work reliably on desktop RV770s */ + if ((rdev->family == CHIP_RV770) && + !(rdev->flags & RADEON_IS_MOBILITY)) + switch_limit = 0xffffffff; /* disable mclk switching */ + if (vblank_time < switch_limit) return true; else -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
