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authorFelix Held <felix-coreboot@felixheld.de>2024-01-22 18:42:35 +0100
committerFelix Held <felix-coreboot@felixheld.de>2024-01-25 22:51:35 +0000
commitc4e5e91cbdf87842003e4569ddfb2f455c077593 (patch)
tree1214423e911fcb33f5796cc327943b34fb4c3387 /Documentation/technotes
parentdc12a3817ae49123fadbe99fcab6c039f3b4b53d (diff)
vc/amd/opensil/genoa_poc/mpio: don't add duplicate MPIO descriptors
When the device right below the MPIO chip driver has downstream devices without another chip in between, those downstream devices will also have their chip_ops entry set to vendorcode_amd_opensil_genoa_poc_mpio_ops. To avoid adding the same MPIO descriptor again for those additional downstream devices, make sure that the chip_info pointer of the device isn't the same as the one of the parent device, since that's only the case for those additional downstream devices. TEST=Onyx still boots to the payload and the MPIO configuration reported from the openSIL code is still the same Signed-off-by: Felix Held <felix-coreboot@felixheld.de> Suggested-by: Nico Huber <nico.h@gmx.de> Change-Id: I6ba90fdc83ba089127e6722778bfef29dd480bb4 Reviewed-on: https://review.coreboot.org/c/coreboot/+/80149 Reviewed-by: Arthur Heymans <arthur@aheymans.xyz> Reviewed-by: Marshall Dawson <marshalldawson3rd@gmail.com> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
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