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Enable open source GPU support

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Enable open source GPU support for Mali Utgard GPUs (lima driver) and
Mali Midgard and Bifrost GPUs (panfrost driver).
The support is enabled by:
- enabling DRM kernel CONFIGs
- enabling lima, panfrost and kmsro in Mesa
- disabling the specific mali driver overrides in sunxi-mali.inc
To enable open source mainline graphics support just add the following
line in your local.conf:

MACHINEOVERRIDES .= ":use-mailine-graphics"

Please note that some machines may need a bigger CMA value to be able to
start Weston. To do that, add e.g. "cma=128M" to the kernel parameters.

Signed-off-by: Diego Rondini <diego.rondini@kynetics.com>
This commit is contained in:
Diego Rondini
2019-11-20 21:55:35 +00:00
parent fa0846c0eb
commit 1d6ef084db
5 changed files with 35 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
recipes-kernel/linux/linux-mainline.inc
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@ -26,4 +26,6 @@ SRC_URI = "https://www.kernel.org/pub/linux/kernel/v5.x/linux-${PV}.tar.xz \
file://defconfig \
"
SRC_URI_append_use-mailine-graphics = " file://drm.cfg"
FILES_${KERNEL_PACKAGE_NAME}-base_append = " ${nonarch_base_libdir}/modules/${KERNEL_VERSION}/modules.builtin.modinfo"

8
recipes-kernel/linux/linux-mainline/drm.cfg Normal file
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@ -0,0 +1,8 @@
CONFIG_DRM=y
CONFIG_DRM_SUN4I=y
CONFIG_DRM_SUN8I_DW_HDMI=y
CONFIG_DRM_SUN8I_MIXER=y
CONFIG_DRM_LIMA=y
CONFIG_DRM_PANFROST=y
CONFIG_CMA=y
CONFIG_DMA_CMA=y