Commit Graph

52200 Commits

Author SHA1 Message Date
Christian König
8c65fe5fc8 drm/amdgpu: limit the number of IVs processed at once
Only process a maximum of 32 IVs before writing back the RPTR. This improves
hw handling when we get close to an overflow in the ring buffer.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Michel Dänzer <michel.daenzer@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:58 -05:00
Christian König
b51cd19e48 drm/amdgpu: enable IH ring 1&2 for Vega20 as well
That doesn't seem to have any negative effects.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:58 -05:00
Christian König
1ae64cec8a drm/amdgpu: enable IH doorbell for ring 1&2 on Vega
The doorbells should already be reserved, just enable them.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:58 -05:00
Christian König
0133690e0d drm/amdgpu: change Vega IH ring 1 config
Disable overflow and enable full drain. This makes fault handling on ring 1
much more reliable since we don't generate back pressure any more.

Signed-off-by: Christian König <christian.koenig@amd.com>
Acked-by: Chunming Zhou <david1.zhou@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:58 -05:00
Nicholas Kazlauskas
46846ba265 drm/amdgpu: Only clear dumb buffers if ring is enabled
The buffers should be cleared when possible but we also don't want
buffer creation to fail in the rare case where the ring isn't ready
during the call. This could happen during some suspend/resume sequences.

Cc: Christian König <ckoenig.leichtzumerken@gmail.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:57 -05:00
Nicholas Kazlauskas
95b1346872 drm/amdgpu: Clear VRAM for DRM dumb_create buffers
The dumb_create API isn't intended for high performance rendering
and it's more useful for userspace (ie. IGT) to have them precleared.

The bonus here is that we also won't needlessly leak whatever was
previously in VRAM, but it also probably wasn't sensitive if it was
going through this API.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:57 -05:00
kbuild test robot
289d513b17 drm/amdgpu: fix semicolon.cocci warnings
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:405:2-3: Unneeded semicolon
drivers/gpu/drm/amd/amdgpu/amdgpu_ras.c:435:2-3: Unneeded semicolon

 Remove unneeded semicolon.

Generated by: scripts/coccinelle/misc/semicolon.cocci

CC: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:52 -05:00
xinhui pan
108c6a6309 drm/amdgpu: add new ras workflow control flags
add ras post init function.
Do some initialization after all IP have finished their late init.

Add new member flags which will control the ras work flow.
For now, vbios enable ras for us on boot. That might change in the
future.
So there should be a flag from vbios to tell us if ras is enabled or not
on boot. Looks like there is no such info now.

Other bits of the flags are reserved to control other parts of ras.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:52 -05:00
xinhui pan
5d0f903fe2 drm/amdgpu: let ras initialization a little noticeable
add drm info output if ras initialized successfully.
add ras atomfirmware sanity check.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:52 -05:00
xinhui pan
163def43e9 drm/amdgpu: Fix lockdep warning more gracely
lockdep need a static key.
Previously we set ignore bit to avoid the warning.
Now call sysfs_attr_init to initialize the static key.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-and-Tested-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:52 -05:00
xinhui pan
b076296b0f drm/amdgpu: Fix ras debugfs data parse
Unzero char is accepted by sscanf, so when data is structure but
unexpectedly return error invalid;

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
5caf466a6e drm/amdgpu: add new member hw_supported
Currently, it is not clear how ras is supported. Both software and
hardware can set the supported. That is confusing.

Fix it by adding new member hw_supported.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
2b9505e353 drm/amdgpu: Fix warning when lockdep is enabled
Set ignore bit to satisfy locpdep.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
54eb4ed607 drm/amdgpu: Fix NULL pointer when ta is missing
Ta is optional, so check if ta firmware is loaded or not.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
Evan Quan
2f3940e992 drm/amdgpu: fix ras parameter descriptions
The descriptions of modinfo wrongly show two parameters
for each feature(see below). This patch can fix this
incorrect outputs.

parm:           amdgpu_ras_enable:Enable RAS features on the GPU (0 = disable, 1 = enable, -1 = auto (default))
parm:           ras_enable:int
parm:           amdgpu_ras_mask:Mask of RAS features to enable (default 0xffffffff), only valid when ras_enable == 1
parm:           ras_mask:uint

Signed-off-by: Evan Quan <evan.quan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Reviewed-by: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
1febb00ecb drm/amdgpu: export both supported and enabled ras features
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
b404ae8255 drm/amdgpu: lookup vbios table to check ecc capability
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Evan Quan <evan.quan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
Hawking Zhang
f49ea9f815 drm/amdgpu: query sram ecc/ecc availability from atombios
query sram ecc capability via amdgpu_atomfirmware_ecc_default_enabled
query ecc availability via amdgpu_atomfirmware_sram_ecc_supported

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
Hawking Zhang
8b6da23f51 drm/amdgpu: add atomfirmware helper function to query sram ecc caps
sram ecc capability could be get from firmware_capability field in firmwareinfo table

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
Hawking Zhang
511c4348cf drm/amdgpu: add atomfirmware helper function to query ecc status
ecc default status (enabled or disabled) could be get from umc_config field in umc_info table

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
Hawking Zhang
ed606ca3d3 drm/amdgpu: update atomfirmware header with ecc related members
add new umc_info structures and new firmware_capability defines

Signed-off-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
acbbee015b drm/amdgpu: handle ras resume
Suspend will put irq, so resume need get irq back.
And in the same time, skip other ras initialization.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
Eric Huang
9b54d20176 drm/amdkfd: add RAS ECC event support (v3)
RAS ECC event will combine with GPU reset event, due to
ECC interrupts are caused by uncorrectable error that triggers
GPU reset.

v2: Fix misleading-indentation warning
v3: fix build with CONFIG_HSA_AMD disabled

Signed-off-by: Eric Huang <JinhuiEric.Huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
Eric Huang
0dee45a25a drm/amdkfd: add RAS capabilities in topology for Vega20 (v2)
It is to collaborate with HSA_CAPABILITY in libhsakmt.

v2: squash in NULL pointer check

Signed-off-by: Eric Huang <JinhuiEric.Huang@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
96ebb30732 drm/amdgpu: add human readable debugfs control support (v2)
Currently, the debugfs control node can't parse bash-like commands.
Now add such support for any tester that uses scripts.

v2: squash in fixes for input validation

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
138352e575 drm/amdgpu: skip gpu reset when ras error occured
gpu reset is not stable on vega20 A1.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
5cb771143e drm/amdgpu: add ioctl query for enabled ras features (v2)
Add a query for userspace to check which RAS features
are enabled.

v2: squash in warning fix

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
ae363a212b drm/amdgpu: Add a new flag to AMDGPU_CTX_OP_QUERY_STATE2
Add AMDGPU_CTX_QUERY2_FLAGS_RAS_CE/UE which indicate if any error happened
between previous query and this query.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:51 -05:00
xinhui pan
791c47694f drm/amdgpu: enable ras on gmc9
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
Feifei Xu
760a1d5534 drm/amdgpu: enable ras on gfx9 (v2)
Register ecc interrupts and ecc interrupt handler on gfx9.
Add ras support on gfx9

v2: squash in warning fix

Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
8cf12507d3 drm/amdgpu: enable ras on sdma4
register IH, enable ras features on sdma.
create sysfs debugfs file for sdma.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Signed-off-by: Feifei Xu <Feifei.Xu@amd.com>
Signed-off-by: Eric Huang <JinhuiEric.Huang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
2be4c4a9d4 drm/amdgpu: reserve bad pages during recovery
Mark vram pages with errors as bad and prevent the driver
from using them.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
36ea1bd2d0 drm/amdgpu: add debugfs ctrl node
allow userspace enable/disable ras

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
c030f2e416 drm/amdgpu: add amdgpu_ras.c to support ras (v2)
add obj management.
add feature control.
add debugfs infrastructure.
add sysfs infrastructure.
add IH infrastructure.
add recovery infrastructure.

It is a framework. Other IPs need call amdgpu_ras_xxx function instead of
psp_ras_xxx functions.

v2: squash in warning fixes

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
ea11421391 drm/amdgpu: add psp cmd submit timeout
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
3ea8fb8c80 drm/amdgpu: add psp v11 ras callback
Add trigger_error and cure_posion.

Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
5e5d315457 drm/amdgpu: add psp ras subsystem infrastructure (v2)
Add ras fw loading, init, terminate.
Add ras cmd submit helper.
Add ras feature enable/disable common function.

v2: squash in unused variable warning fix

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
7da674535d drm/amdgpu: add psp ras callback func and macro
Define the driver side interface for ras ta.

Acked-by: Hawking Zhang <Hawking.Zhang@amd.com>
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
58b22e0b0e drm/amdgpu: add ta_ras_if.h
Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
1218252ff2 drm/amdgpu: add module parameters for ras
Allow RAS feature enable/disable via boot parameter.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Hawking Zhang <Hawking.Zhang@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
9b9ca62dde drm/amdgpu: export ta fw info
Output the ta fw, aka xgmi/ras, via debugfs.

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
xinhui pan
c6eec90219 drm/amdgpu: add ta ras fw info (v2)
Add ras fw part, xgmi and ras fw are combined together in ta binary.
Reading the data from the info is not implemented yet.

v2: squash in "drm/amdgpu: fix NULL pointer when ta is missing"

Signed-off-by: xinhui pan <xinhui.pan@amd.com>
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
Kevin Wang
1fb4f15548 drm/amd/powerplay: move the smc_if_version to asic file
each asic may be has different smc if version,
so move its to asic file to implement.

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
Kevin Wang
96e1b2c2f2 drm/amd/powerplay: simplify sw-smu message map macro
simplify macro of MSG_MAP for sw-smu

Signed-off-by: Kevin Wang <kevin1.wang@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
Oak Zeng
83afe835eb drm/amdgpu: Cosmetic change for calling func amdgpu_gmc_vram_location
Use function parameter mc as the second parameter of amdgpu_gmc_vram_location,
so codes look more consistent.

Signed-off-by: Oak Zeng <Oak.Zeng@amd.com>
Reviewed-by: Christian Konig <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
Nicholas Kazlauskas
e0634e8d6b drm/amd/display: Fix plane address updates for video surface formats
[Why]
For new DC planes the correct plane address fields are filled based
on whether the plane had a graphics or video format.

However, when we perform stream and plane updates using DC we only ever
fill in the graphics format fields. This causing corruption and hangs
when using video surface formats like NV12 for planes.

[How]
Use the same logic everywhere we update dc_plane_address - always
fill in the correct fields based on the surface format type.

There are 3 places this is done:

- Atomic check, during DC plane creation
- Atomic commit, during plane prepare_fb
- Atomic commit tail, during amdgpu_dm_commit_planes

We use the fill_plane_tiling_attributes in all 3 locations and it
already needs the address to update DCC attributes, so the surface
address update logic can be moved into this helper.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:50 -05:00
Andrey Grodzovsky
533aed278a drm/amdgpu: Move IB pool init and fini v2
Problem:
Using SDMA for TLB invalidation in certain ASICs exposed a problem
of IB pool not being ready while SDMA already up on Init and already
shutt down while SDMA still running on Fini. This caused
IB allocation failure. Temproary fix was commited into a
bringup branch but this is the generic fix.

Fix:
Init IB pool rigth after GMC is ready but before SDMA is ready.
Do th opposite for Fini.

v2: Remove restriction on SDMA early init and move amdgpu_ib_pool_fini

Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Andrey Grodzovsky <andrey.grodzovsky@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:49 -05:00
David Francis
c6ade4ee73 drm/amd/display: On DCN1, Wait for vupdate on cursor updates
[Why]
Cursor updates must acquire the pipe control lock to
prevent vupdate from triggering in the middle of cursor
programming. On DCN1 the pipe control lock prevents
pageflips from occurring. This means that a cursor update
right before vupdate can delay a pending pageflip

[How]
If the time until the next vupdate is less than a
conservative estimate of the cursor programming time,
wait until the vupdate has passed before locking.

Signed-off-by: David Francis <David.Francis@amd.com>
Reviewed-by: Harry Wentland <Harry.Wentland@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Nicholas Kazlauskas <Nicholas.Kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:49 -05:00
Wenjing Liu
0dcdcc8982 drm/amd/display: add i2c over aux failure handling
[why]
We will not retry when EDID read failure using i2c over aux

[how]
treat i2c over aux failure the same as defer

Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: David Francis <David.Francis@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:49 -05:00
Jun Lei
33d7598d70 drm/amd/display: fix up reference clock abstractions
[why]
"reference clock" is a very overloaded variable in DC and causes confusion
as there are multiple sources of reference clock, which may be different values
incorrect input values to DML will cause DCHUB to be programmed improperly
and lead to hard to debug underflow issues

[how]
instead of using ref clock everywhere, specify WHICH ref clock:
- xtalin
- dccg refclk
- dchub refclk

these are all distinct values which may not be equal

Signed-off-by: Jun Lei <Jun.Lei@amd.com>
Reviewed-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: David Francis <David.Francis@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2019-03-19 15:36:49 -05:00