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8fdded8215
linux_dsm_epyc7002/drivers/gpu/drm
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Ville Syrjälä 8fdded8215 drm/i915: Disable L2 cache clock gating on 830 when using the overlay 
BSpec says:
"Overlay Clock Gating Must be Disabled: Overlay & L2 Cache clock gating
must be disabled in order to prevent device hangs when turning off overlay.SW
must turn off Ovrunit clock gating (6200h) and L2 Cache clock gating (C8h)."

We only turned off the overlay clock gating (due to lack of docs I
presume). After a bit of experimentation it looks like the the magic
C8h register lives in the PCI config space of device 0, and the magic
bit appears to be bit 2. Or at the very least this eliminates the GPU
death after MI_OVERLAY_OFF.

L2 clock gating seems to save ~80mW, so let's keep it on unless we need
to actually use the overlay.

Also let's move the OVRUNIT clock gating to the same place since we can,
and 845 supposedly doesn't need it.

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Link: http://patchwork.freedesktop.org/patch/msgid/1481131693-27993-11-git-send-email-ville.syrjala@linux.intel.com
Acked-by: Chris Wilson <chris@chris-wilson.co.uk>
2016-12-22 21:31:21 +02:00
..
amd Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
arc Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
arm Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
armada Merge branch 'drm-armada-devel' of git://git.armlinux.org.uk/~rmk/linux-arm into drm-next 2016-11-25 09:03:27 +10:00
ast drm/ast: free correct pointer in astfb_create() error paths 2016-11-14 07:45:16 +01:00
atmel-hlcdc drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
bochs drm/bochs: use DRM_FB_HELPER_DEFAULT_OPS for fb_ops 2016-11-14 07:54:38 +01:00
bridge tilcdc changes for v4.10 2016-12-01 09:26:55 +10:00
cirrus Merge tag 'topic/drm-misc-2016-11-10' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-11-11 09:28:44 +10:00
etnaviv drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
exynos Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
fsl-dcu Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
gma500 drm/gma500: use DRM_FB_HELPER_DEFAULT_OPS for fb_ops 2016-11-14 08:01:01 +01:00
hisilicon drm/hisilicon/hibmc: mark PM functions __maybe_unused 2016-11-25 07:58:55 +01:00
i2c drm/i2c: tda998x: fix spelling mistake 2016-11-18 00:00:40 +00:00
i810 drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
i915 drm/i915: Disable L2 cache clock gating on 830 when using the overlay 2016-12-22 21:31:21 +02:00
imx drm/virtio: fix busid in a different way, allocate more vbufs. 2016-11-30 14:18:51 +10:00
mediatek Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
mga
mgag200 Merge tag 'topic/drm-misc-2016-11-10' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-11-11 09:28:44 +10:00
msm Merge branch 'msm-next' of git://people.freedesktop.org/~robclark/linux into drm-next 2016-12-01 09:25:58 +10:00
nouveau Merge branch 'linux-4.10' of git://github.com/skeggsb/linux into drm-next 2016-11-17 10:08:29 +10:00
omapdrm drm/omapdrm: use DRM_FB_HELPER_DEFAULT_OPS for fb_ops 2016-11-14 07:58:15 +01:00
panel
qxl drm/virtio: fix busid in a different way, allocate more vbufs. 2016-11-30 14:18:51 +10:00
r128
radeon Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
rcar-du Merge branch 'drm/next/du' of git://linuxtv.org/pinchartl/media into drm-next 2016-11-16 09:39:21 +10:00
rockchip drm/rockchip: use DRM_FB_HELPER_DEFAULT_OPS for fb_ops 2016-11-14 07:56:47 +01:00
savage drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
shmobile drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
sis drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
sti Merge tag 'topic/drm-misc-2016-11-10' of git://anongit.freedesktop.org/drm-intel into drm-next 2016-11-11 09:28:44 +10:00
sun4i Linux 4.9-rc8 2016-12-05 17:11:48 +10:00
tdfx drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
tegra drm/tegra: use DRM_FB_HELPER_DEFAULT_OPS for fb_ops 2016-11-14 07:56:58 +01:00
tilcdc drm/tilcdc: fix parsing of some DT properties 2016-11-30 14:20:16 +02:00
ttm drm/ttm: fix ttm_bo_wait 2016-11-09 00:46:04 +05:30
udl drm/virtio: fix busid in a different way, allocate more vbufs. 2016-11-30 14:18:51 +10:00
vc4 This pull request brings in fragment shader threading and ETC1 support 2016-11-17 09:43:56 +10:00
vgem dma-buf: Rename struct fence to dma_fence 2016-10-25 14:40:39 +02:00
via drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
virtio drm/virtio: fix busid in a different way, allocate more vbufs. 2016-11-30 14:18:51 +10:00
vmwgfx drm: move allocation out of drm_get_format_name() 2016-11-12 14:19:38 +01:00
zte drm: zte: checking for NULL instead of IS_ERR() 2016-11-15 11:00:42 +01:00
ati_pcigart.c
drm_agpsupport.c
drm_atomic_helper.c drm/atomic: Unconfuse the old_state mess in commmit_tail 2016-11-22 11:11:57 +01:00
drm_atomic.c drm: Introduce drm_framebuffer_assign() 2016-11-29 10:22:08 +01:00
drm_auth.c
drm_blend.c drm: RIP mode_config->rotation_property 2016-10-22 10:42:11 +02:00
drm_bridge.c
drm_bufs.c GPU-DRM: Replace a kzalloc() call by kcalloc() in drm_legacy_addbufs_sg() 2016-09-21 13:24:27 +02:00
drm_cache.c
drm_color_mgmt.c drm/color: document NULL values and default settings better 2016-11-15 22:39:48 +01:00
drm_connector.c drm: document standard connector properties 2016-11-18 09:45:07 +01:00
drm_context.c
drm_crtc_helper_internal.h
drm_crtc_helper.c
drm_crtc_internal.h drm/fence: add fence timeline to drm_crtc 2016-11-16 10:42:48 +01:00
drm_crtc.c drm/fence: add out-fences support 2016-11-16 14:36:27 +01:00
drm_debugfs_crc.c drm: fix sparse warnings on undeclared symbols in crc debugfs 2016-10-19 14:10:29 +03:00
drm_debugfs.c drm/atomic: cleanup debugfs entries on un-registering the driver. 2016-11-21 13:22:08 -05:00
drm_dma.c
drm_dp_aux_dev.c
drm_dp_dual_mode_helper.c drm: Print some debug/error info during DP dual mode detect 2016-10-26 15:57:11 -04:00
drm_dp_helper.c Merge tag 'drm-for-v4.9' of git://people.freedesktop.org/~airlied/linux 2016-10-11 18:12:22 -07:00
drm_dp_mst_topology.c drm/dp/mst: Check peer device type before attempting EDID read 2016-10-26 18:53:44 +02:00
drm_drv.c Merge tag 'drm-misc-next-2016-11-29' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2016-11-30 14:28:20 +10:00
drm_dumb_buffers.c drm: Consolidate dumb buffer docs 2016-11-15 12:51:49 +01:00
drm_edid_load.c
drm_edid.c Merge tag 'drm-misc-next-2016-11-29' of git://anongit.freedesktop.org/git/drm-misc into drm-next 2016-11-30 14:28:20 +10:00
drm_encoder_slave.c
drm_encoder.c drm: Fix typo in encoder docs 2016-09-21 13:33:50 +02:00
drm_fb_cma_helper.c drm/fb_cma_helper: Add drm_fb_cma_prepare_fb() helper 2016-11-14 12:43:58 +01:00
drm_fb_helper.c drm: Fix shift operations for drm_fb_helper::drm_target_preferred() 2016-11-28 08:40:03 +01:00
drm_flip_work.c
drm_fops.c drm: define drm_compat_ioctl NULL on CONFIG_COMPAT=n and reduce #ifdefs 2016-11-02 11:33:47 -04:00
drm_fourcc.c drm: move allocation out of drm_get_format_name() 2016-11-12 14:19:38 +01:00
drm_framebuffer.c drm: Nuke modifier[1-3] 2016-11-17 11:58:09 +01:00
drm_gem_cma_helper.c
drm_gem.c
drm_global.c
drm_hashtab.c
drm_info.c drm: Print device information again in debugfs 2016-10-17 16:20:53 +10:00
drm_internal.h drm: drm_irq.h header cleanup 2016-11-15 23:33:48 +01:00
drm_ioc32.c
drm_ioctl.c drm: Don't call drm_for_each_crtc with a non-KMS driver 2016-11-30 10:13:00 +01:00
drm_irq.c drm/irq: Unexport drm_vblank_on/off 2016-11-15 23:33:48 +01:00
drm_kms_helper_common.c
drm_legacy.h
drm_lock.c drm: Avoid NULL dereference for DRM_LEGACY debug message 2016-11-28 08:39:41 +01:00
drm_memory.c
drm_mipi_dsi.c
drm_mm.c drm: Check against color expansion in drm_mm_reserve_node() 2016-11-24 09:11:37 +01:00
drm_mode_config.c drm/fence: add out-fences support 2016-11-16 14:36:27 +01:00
drm_mode_object.c
drm_modes.c Revert "drm: Add aspect ratio parsing in DRM layer" 2016-11-15 15:01:42 +01:00
drm_modeset_helper.c drm: also move DSI panels to the front of the connector list 2016-11-17 11:59:26 +01:00
drm_modeset_lock.c drm: don't let crtc_ww_class leak out 2016-11-15 08:33:35 +01:00
drm_of.c drm: convert DT component matching to component_match_add_release() 2016-10-25 11:52:38 -04:00
drm_panel.c
drm_pci.c drm: Don't swallow error codes in drm_dev_alloc() 2016-09-22 04:03:48 -07:00
drm_plane_helper.c drm: add helpers to go from plane state to drm_rect 2016-11-08 16:38:03 -05:00
drm_plane.c drm/fence: add in-fences support 2016-11-16 09:55:27 +01:00
drm_platform.c drm: Don't swallow error codes in drm_dev_alloc() 2016-09-22 04:03:48 -07:00
drm_prime.c drm: Fix up kerneldoc for new drm_gem_dmabuf_export() 2016-10-10 11:19:42 +02:00
drm_print.c drm/print: Move kerneldoc next to definition 2016-11-15 12:55:24 +01:00
drm_probe_helper.c
drm_property.c drm: Use u64_to_user_ptr() helper for blob ioctls 2016-11-28 08:12:18 +01:00
drm_rect.c drm: helper macros to print composite types 2016-11-08 16:38:03 -05:00
drm_scatter.c
drm_simple_kms_helper.c drm: simple_kms_helper: Add prepare_fb and cleanup_fb hooks 2016-10-05 15:18:02 +02:00
drm_sysfs.c
drm_trace_points.c
drm_trace.h
drm_vm.c
drm_vma_manager.c
Kconfig drm/fence: add in-fences support 2016-11-16 09:55:27 +01:00
Makefile drm: Extract drm_mode_config.[hc] 2016-11-15 15:23:29 +01:00