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The bspec only asks the driver to reprogram the DBUF_CTL's DBUF_TRACKER_STATE_SERVICE field to 0x8 on DG2 and platforms with display version 12. All other platforms should avoid reprogramming this register at driver init. Although we've been accidentally reprogramming DBUF_CTL on platforms where the spec does not ask us to, that mistake has been harmless so far because the value being programmed by the driver happened to match the hardware's default settings. So, update DBUF_TRACKER_STATE_SERVICE field to 0x8 only for 1. display version 12 2. DG2. Other platforms unless stated should use their default value. Bspec: 49213 Signed-off-by: Ravi Kumar Vodapalli <ravi.kumar.vodapalli@intel.com> Reviewed-by: Jonathan Cavitt <jonathan.cavitt@intel.com> Reviewed-by: Matt Roper <matthew.d.roper@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20250108200210.1815229-1-ravi.kumar.vodapalli@intel.com [mattrope: Tweaked patch subject to accurately reflect content] Signed-off-by: Matt Roper <matthew.d.roper@intel.com> |
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| crypto | ||
| Documentation | ||
| drivers | ||
| fs | ||
| include | ||
| init | ||
| io_uring | ||
| ipc | ||
| kernel | ||
| lib | ||
| LICENSES | ||
| mm | ||
| net | ||
| rust | ||
| samples | ||
| scripts | ||
| security | ||
| sound | ||
| tools | ||
| usr | ||
| virt | ||
| .clang-format | ||
| .clippy.toml | ||
| .cocciconfig | ||
| .editorconfig | ||
| .get_maintainer.ignore | ||
| .gitattributes | ||
| .gitignore | ||
| .mailmap | ||
| .rustfmt.toml | ||
| COPYING | ||
| CREDITS | ||
| Kbuild | ||
| Kconfig | ||
| MAINTAINERS | ||
| Makefile | ||
| 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.