diff options
Diffstat (limited to 'drivers/gpu/drm/radeon/r600.c')
| -rw-r--r-- | drivers/gpu/drm/radeon/r600.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c index e2dee80e27d..637280f541a 100644 --- a/drivers/gpu/drm/radeon/r600.c +++ b/drivers/gpu/drm/radeon/r600.c @@ -3681,6 +3681,8 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev) { u32 link_width_cntl, lanes, speed_cntl, training_cntl, tmp; u16 link_cntl2; + u32 mask; + int ret; if (radeon_pcie_gen2 == 0) return; @@ -3699,6 +3701,15 @@ static void r600_pcie_gen2_enable(struct radeon_device *rdev) if (rdev->family <= CHIP_R600) return; + ret = drm_pcie_get_speed_cap_mask(rdev->ddev, &mask); + if (ret != 0) + return; + + if (!(mask & DRM_PCIE_SPEED_50)) + return; + + DRM_INFO("enabling PCIE gen 2 link speeds, disable with radeon.pcie_gen2=0\n"); + /* 55 nm r6xx asics */ if ((rdev->family == CHIP_RV670) || (rdev->family == CHIP_RV620) || |