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e54469c723
Previously, Valhall and Bifrost GPUs shared a single driver source directory (drivers/gpu/arm/bifrost). However, starting from DDK r52 (g27), Bifrost GPUs are no longer supported. As a result, the Valhall GPU driver from DDK r53 (g28) must use a separate source directory (drivers/gpu/arm/valhall). There are also modifications in some header files outside of drivers/gpu/arm/. In addition, the configs related to Bifrost and Valhall GPUs have been removed from the defconfig file like rockchip_linux_defconfig, which does not reflect the current SoC. Instead, these configs have been migrated to the .config files such as rk3576.config, whose file names can reflect the current SoC. Therefore, for some SoCs, the kernel compilation command line needs to be adjusted. Change-Id: I0c4384212b4b679a728401f7f89ae839530f002b Signed-off-by: Zhen Chen <chenzhen@rock-chips.com>