| inherit linux-kernel-base | 
 |  | 
 |  | 
 | def get_dts(d, ver): | 
 |     staging_dir = d.getVar("STAGING_KERNEL_BUILDDIR", True) | 
 |     dts = d.getVar("KERNEL_DEVICETREE", True) | 
 |  | 
 |     # d.getVar() might return 'None' as a normal string | 
 |     # leading to 'is None' check isn't enough. | 
 |     # TODO: Investigate if this is a bug in bitbake | 
 |     if ver is None or ver == "None": | 
 |         ''' if 'ver' isn't set try to grab the kernel version | 
 |         from the kernel staging ''' | 
 |         ver = get_kernelversion_file(staging_dir) | 
 |  | 
 |     if ver is not None: | 
 |         min_ver = ver.split('.', 3) | 
 |     else: | 
 |         return dts | 
 |  | 
 |     # Always turn off device tree support for kernel's < 3.18 | 
 |     try: | 
 |         if int(min_ver[0]) <= 3: | 
 |             if int(min_ver[1]) < 18: | 
 |                 dts = "" | 
 |     except IndexError: | 
 |         min_ver = None | 
 |  | 
 |     return dts | 
 |  | 
 |  | 
 | def split_overlays(d, out): | 
 |     dts = get_dts(d, None) | 
 |     if out: | 
 |         overlays = oe.utils.str_filter_out('\S+\-overlay\.dtb$', dts, d) | 
 |     else: | 
 |         overlays = oe.utils.str_filter('\S+\-overlay\.dtb$', dts, d) | 
 |  | 
 |     return overlays |