| comment "sunxi-mali-utgard-driver needs a Linux kernel to be built" |
| depends on BR2_PACKAGE_SUNXI_MALI_UTGARD |
| depends on !BR2_LINUX_KERNEL |
| |
| config BR2_PACKAGE_SUNXI_MALI_UTGARD_DRIVER |
| bool "sunxi-mali-utgard-driver" |
| default y |
| depends on BR2_PACKAGE_SUNXI_MALI_UTGARD # runtime |
| depends on BR2_LINUX_KERNEL |
| select BR2_LINUX_NEEDS_MODULES # not using kernel-module infra |
| help |
| This package builds and installs the Linux kernel driver for |
| the Mali Utgard GPU on Allwinner platforms, compatible with |
| recent Linux kernels (>= 4.4). Note that it should be |
| installed together with the corresponding userspace OpenGL |
| libraries, which are provided as binaries only at: |
| https://github.com/bootlin/mali-blobs |
| |
| sunxi-mali-utgard-driver requires a Linux kernel >= 4.4 |
| with the following options enabled: |
| |
| - CONFIG_CMA |
| - CONFIG_DMA_CMA |
| |
| starting from Linux Kernel >= 4.20 following options must be |
| enabled: |
| - CONFIG_DRM_FBDEV_LEAK_PHYS_SMEM |
| |
| The following kernel command line options must be passed: |
| |
| - drm_kms_helper.drm_leak_fbdev_smem = 1 |
| since drm_kms_helper.drm_leak_fbdev_smem is set to 0 by |
| default |
| |
| - drm_kms_helper.drm_fbdev_overalloc >= 200 |
| since the driver requires at least double buffering and |
| fails to work with the default value(100). |
| |
| https://github.com/giuliobenetti/sunxi-mali/blob/master/README.md |
