f405c9b560
Integrating the following commit(s) to linux-yocto/6.6:
1/1 [
Author: Kevin Hao
Email: haokexin@gmail.com
Subject: drm/tilcdc: Set preferred depth
Date: Tue, 19 Mar 2024 08:35:29 +0800
The commit c91acda3a380 ("drm/gem: Check for valid formats") adds a
check for valid pixel formats on drm_gem_fb_create(), but this breaks
the X server on the beaglebone black board.
We have set 'DefaultDepth' to 16 in our xorg.conf. In the X modesetting
driver, the drmmode_get_default_bpp() is used to guess the default
depth/bpp. First it tries to get them via DRM_CAP_DUMB_PREFERRED_DEPTH
ioctl, and if it fail, then try to create a FB with 'depth = 24' and
'bpp = 32' to check whether this depth/dpp is a valid combo. Before the
kernel commit c91acda3a380, the FB always can be created successfully.
This will avoid the bpp to be set to 24 forcibly. But after kernel
commit c91acda3a380, the FB will not be created successfully due to the
check of the valid pixel format. Then the bpp is set to 24, but the
'depth = 16' and 'bpp = 24' combo is not a valid pixel format.
Fix this issue by explicitly setting the preferred_depth in this driver.
With this change, the modesetting driver would choose the correct
depth/bpp combo based on our setting in xorg.conf.
Fixes: c91acda3a380 ("drm/gem: Check for valid formats")
Cc: stable@vger.kernel.org
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Link: https://lore.kernel.org/r/20240317033918.535716-1-haokexin@gmail.com/
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
]
(From OE-Core rev: e23cbdd51ce4a8ca784f5902310a9e2d363c438a)
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
Poky
Poky is an integration of various components to form a pre-packaged build system and development environment which is used as a development and validation tool by the Yocto Project. It features support for building customised embedded style device images and custom containers. There are reference demo images ranging from X11/GTK+ to Weston, commandline and more. The system supports cross-architecture application development using QEMU emulation and a standalone toolchain and SDK suitable for IDE integration.
Additional information on the specifics of hardware that Poky supports is available in README.hardware. Further hardware support can easily be added in the form of BSP layers which extend the systems capabilities in a modular way. Many layers are available and can be found through the layer index.
As an integration layer Poky consists of several upstream projects such as BitBake, OpenEmbedded-Core, Yocto documentation, the 'meta-yocto' layer which has configuration and hardware support components. These components are all part of the Yocto Project and OpenEmbedded ecosystems.
The Yocto Project has extensive documentation about the system including a reference manual which can be found at https://docs.yoctoproject.org/
OpenEmbedded is the build architecture used by Poky and the Yocto project. For information about OpenEmbedded, see the OpenEmbedded website.
Contribution Guidelines
Please refer to our contributor guide here: https://docs.yoctoproject.org/dev/contributor-guide/ for full details on how to submit changes.
Where to Send Patches
As Poky is an integration repository (built using a tool called combo-layer), patches against the various components should be sent to their respective upstreams:
OpenEmbedded-Core (files in meta/, meta-selftest/, meta-skeleton/, scripts/):
- Git repository: https://git.openembedded.org/openembedded-core/
- Mailing list: openembedded-core@lists.openembedded.org
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- Git repository: https://git.openembedded.org/bitbake/
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- Mailing list: poky@lists.yoctoproject.org
If in doubt, check the openembedded-core git repository for the content you intend to modify as most files are from there unless clearly one of the above categories. Before sending, be sure the patches apply cleanly to the current git repository branch in question.