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Fangzhi Zuo 16f2e14ee9 drm/amd/display: Skip Check Runtime Link Setting for Specific Branch Device
[why]
Read link setting inside mode validation is not always the final downlink setting.
It is found true in Synaptics branch device.

At bootup, the preferred mode being set right after 1080p is set. It occurred
before graphic load. That modeset switch in a short period of time makes
the branch device switch back and forth from lower and higher link rate,
observed at Synaptics branch device.
DP2 RTK hub on the other hand, sticks to highest available downlink rate after bootup.

Existing check of runtime downlink setting in mode validation shows asynchronous at
branch device link switch, i.e., downlink switch to higher link rate not yet complete
when the mode validation tries to probe the downlink setting. That makes mode validation
checking downlink setting making wrong decision by pruning modes that should pass the
validation after the downlink setting switch is complete.

[how]
If Synaptics is found at the last branch, skip checking downlink setting
at mode validation.

Reviewed-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2025-08-29 10:23:09 -04:00
arch drm-misc-next for 6.17: 2025-06-27 09:58:05 +10:00
block block-6.16-20250614 2025-06-14 09:25:22 -07:00
certs
crypto crypto: hkdf - move to late_initcall 2025-06-11 10:59:45 +08:00
Documentation docs: gpu: amdgpu: Fix spelling in amdgpu documentation 2025-08-27 13:57:48 -04:00
drivers drm/amd/display: Skip Check Runtime Link Setting for Specific Branch Device 2025-08-29 10:23:09 -04:00
fs three smb3 client fixes 2025-06-14 10:13:32 -07:00
include amd-drm-next-6.17-2025-07-17: 2025-07-21 11:57:43 +10:00
init init: fix build warnings about export.h 2025-06-11 22:42:36 -07:00
io_uring io_uring-6.16-20250614 2025-06-14 08:44:54 -07:00
ipc - The 3 patch series "hung_task: extend blocking task stacktrace dump to 2025-05-31 19:12:53 -07:00
kernel PM: hibernate: shrink shmem pages after dev_pm_ops.prepare() 2025-07-10 10:49:45 -05:00
lib scatterlist: fix extraneous '@'-sign kernel-doc notation 2025-06-11 22:42:35 -07:00
LICENSES
mm 9 hotfixes. 3 are cc:stable and the remainder address post-6.15 issues 2025-06-14 08:18:09 -07:00
net Including fixes from bluetooth and wireless. 2025-06-12 09:50:36 -07:00
rust Nova changes for v6.17 2025-07-21 12:56:39 +10:00
samples rust: dma: convert the read/write macros to return Result 2025-06-23 15:34:13 +02:00
scripts gendwarfksyms: Fix structure type overrides 2025-06-16 00:49:48 +09:00
security KEYS: Invert FINAL_PUT bit 2025-06-11 11:57:14 -07:00
sound treewide, timers: Rename from_timer() to timer_container_of() 2025-06-08 09:07:37 +02:00
tools 9 hotfixes. 3 are cc:stable and the remainder address post-6.15 issues 2025-06-14 08:18:09 -07:00
usr
virt
.clang-format
.clippy.toml
.cocciconfig
.editorconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap Including fixes from bluetooth and wireless. 2025-06-12 09:50:36 -07:00
.pylintrc
.rustfmt.toml
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Nova changes for v6.17 2025-07-21 12:56:39 +10:00
Makefile Linux 6.16-rc2 2025-06-15 13:49:41 -07:00
README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.