Jesse Zhang 7f3b16f3f2 drm/amdgpu: Fix SDMA UTC_L1 handling during start/stop sequences
This commit makes two key fixes to SDMA v4.4.2 handling:

1. disable UTC_L1 in sdma_cntl register when stopping SDMA engines
   by reading the current value before modifying UTC_L1_ENABLE bit.

2. Ensure UTC_L1_ENABLE is consistently managed by:
   - Adding the missing register write when enabling UTC_L1 during start
   - Keeping UTC_L1 enabled by default as per hardware requirements

v2: Correct SDMA_CNTL setting (Philip)

Suggested-by: Jonathan Kim <jonathan.kim@amd.com>
Signed-off-by: Jesse Zhang <Jesse.Zhang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
(cherry picked from commit 375bf56465)
Cc: stable@vger.kernel.org
2025-06-18 13:14:40 -04:00
2025-06-11 11:57:14 -07:00
2025-02-19 14:53:27 -07:00
2025-06-15 13:49:41 -07:00
2024-03-18 03:36:32 -06:00

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.
S
Description
No description provided
Readme
5.7 GiB
Languages
C 96.9%
Assembly 0.9%
Rust 0.6%
Shell 0.6%
Python 0.5%
Other 0.3%