I am trying to setup Intel's new open-source iHD driver on a Yocto environment.
The documentation says that skl_dmc_ver1_27.bin is required. Their documentation updates a symlink (skl_dmc_ver1.bin), as if the kernel loads it, but starting at kernel 4.8, it stopped loading the symlink and instead loads a specific version of the dmc (see here: https://github.com/torvalds/linux/blob/v4.8/drivers/gpu/drm/i915/intel_csr.c#L48). Is the Intel documentation accurate? It is confusing because the guide refers to 4.14.16 specifically, which doesn't use the symlink file skl_dmc_ver1.bin.
Any ways, I tried replacing skl_dmc_ver1_26.bin with skl_dmc_ver1_27.bin to have the same effect, but I got a segfault on boot.
Should I even bother updating the DMC? Should the iHD driver work on most kernels, even with 1_26 version of DMC?
By the way, this is the kernel I am using (with Yocto).
Any help would be greatly appreciated. There is no documentation on this stuff.
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