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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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cffb4c3ea3
There was a integer wraparound when mode_clock became too high, and we didn't correct for the FEC overhead factor when dividing, with the calculations breaking at HBR3. As a result our calculated bpp was way too high, and the link width limitation never came into effect. Print out the resulting bpp calcululations as a sanity check, just in case we ever have to debug it later on again. We also used the wrong factor for FEC. While bspec mentions 2.4%, all the calculations use 1/0.972261, and the same ratio should be applied to data M/N as well, so use it there when FEC is enabled. This fixes the FIFO underrun we are seeing with FEC enabled. Changes since v2: - Handle fec_enable in intel_link_compute_m_n, so only data M/N is adjusted. (Ville) - Fix initial hardware readout for FEC. (Ville) Changes since v3: - Remove bogus fec_to_mode_clock. (Ville) Changes since v4: - Use the correct register for icl. (Ville) - Split hw readout to a separate patch. Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com> Fixes: |
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.. | ||
amd | ||
arc | ||
arm | ||
armada | ||
aspeed | ||
ast | ||
atmel-hlcdc | ||
bochs | ||
bridge | ||
cirrus | ||
etnaviv | ||
exynos | ||
fsl-dcu | ||
gma500 | ||
hisilicon | ||
i2c | ||
i810 | ||
i915 | ||
imx | ||
ingenic | ||
lib | ||
lima | ||
mcde | ||
mediatek | ||
meson | ||
mga | ||
mgag200 | ||
msm | ||
mxsfb | ||
nouveau | ||
omapdrm | ||
panel | ||
panfrost | ||
pl111 | ||
qxl | ||
r128 | ||
radeon | ||
rcar-du | ||
rockchip | ||
savage | ||
scheduler | ||
selftests | ||
shmobile | ||
sis | ||
sti | ||
stm | ||
sun4i | ||
tdfx | ||
tegra | ||
tilcdc | ||
tiny | ||
ttm | ||
tve200 | ||
udl | ||
v3d | ||
vboxvideo | ||
vc4 | ||
vgem | ||
via | ||
virtio | ||
vkms | ||
vmwgfx | ||
xen | ||
zte | ||
ati_pcigart.c | ||
drm_agpsupport.c | ||
drm_atomic_helper.c | ||
drm_atomic_state_helper.c | ||
drm_atomic_uapi.c | ||
drm_atomic.c | ||
drm_auth.c | ||
drm_blend.c | ||
drm_bridge.c | ||
drm_bufs.c | ||
drm_cache.c | ||
drm_client_modeset.c | ||
drm_client.c | ||
drm_color_mgmt.c | ||
drm_connector.c | ||
drm_context.c | ||
drm_crtc_helper_internal.h | ||
drm_crtc_helper.c | ||
drm_crtc_internal.h | ||
drm_crtc.c | ||
drm_damage_helper.c | ||
drm_debugfs_crc.c | ||
drm_debugfs.c | ||
drm_dma.c | ||
drm_dp_aux_dev.c | ||
drm_dp_cec.c | ||
drm_dp_dual_mode_helper.c | ||
drm_dp_helper.c | ||
drm_dp_mst_topology.c | ||
drm_drv.c | ||
drm_dsc.c | ||
drm_dumb_buffers.c | ||
drm_edid_load.c | ||
drm_edid.c | ||
drm_encoder_slave.c | ||
drm_encoder.c | ||
drm_fb_cma_helper.c | ||
drm_fb_helper.c | ||
drm_file.c | ||
drm_flip_work.c | ||
drm_format_helper.c | ||
drm_fourcc.c | ||
drm_framebuffer.c | ||
drm_gem_cma_helper.c | ||
drm_gem_framebuffer_helper.c | ||
drm_gem_shmem_helper.c | ||
drm_gem_vram_helper.c | ||
drm_gem.c | ||
drm_hashtab.c | ||
drm_hdcp.c | ||
drm_internal.h | ||
drm_ioc32.c | ||
drm_ioctl.c | ||
drm_irq.c | ||
drm_kms_helper_common.c | ||
drm_lease.c | ||
drm_legacy_misc.c | ||
drm_legacy.h | ||
drm_lock.c | ||
drm_memory.c | ||
drm_mipi_dbi.c | ||
drm_mipi_dsi.c | ||
drm_mm.c | ||
drm_mode_config.c | ||
drm_mode_object.c | ||
drm_modes.c | ||
drm_modeset_helper.c | ||
drm_modeset_lock.c | ||
drm_of.c | ||
drm_panel_orientation_quirks.c | ||
drm_panel.c | ||
drm_pci.c | ||
drm_plane_helper.c | ||
drm_plane.c | ||
drm_prime.c | ||
drm_print.c | ||
drm_probe_helper.c | ||
drm_property.c | ||
drm_rect.c | ||
drm_scatter.c | ||
drm_scdc_helper.c | ||
drm_self_refresh_helper.c | ||
drm_simple_kms_helper.c | ||
drm_syncobj.c | ||
drm_sysfs.c | ||
drm_trace_points.c | ||
drm_trace.h | ||
drm_vblank.c | ||
drm_vm.c | ||
drm_vma_manager.c | ||
drm_vram_helper_common.c | ||
drm_vram_mm_helper.c | ||
drm_writeback.c | ||
Kconfig | ||
Makefile |