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authorAngel Pons <th3fanbus@gmail.com>2020-10-09 20:55:56 +0200
committerMichael Niewöhner <foss@mniewoehner.de>2020-10-13 10:32:12 +0000
commitd89d0860451f2e2f6c4dc1db57f75e60d5cb2add (patch)
treef6f3b05330e2491a534c8dbab20e28eecef8251f /src/mainboard/jetway/nf81-t56n-lf
parent5b24c6d304ed3912419b95c9af7fd496897638a7 (diff)
mb/asrock/h110m/romstage.c: Correct FSP-M UPDs
The DQ and DQS byte maps do not apply to DDR4 configurations, and the RCOMP resistor and target values are not correct for SKL-S (or KBL-S). Drop the byte maps and use RCOMP values for the correct platform type. RCOMP resistor values for all non-socketed platforms are listed in the Platform Design Guide, and also appear in schematics. For SKL-S, the RCOMP resistors are on the CPU and their values have been confirmed by measuring them on an i5-6400, and match the PDG values for SKL-H. RCOMP target values can be guessed from Intel Document #573387 and some of them are also present in datasheet volume 1, under DC specifications. Change-Id: I699d46b9b516be8946367e6d9b24883ae1e78d03 Signed-off-by: Angel Pons <th3fanbus@gmail.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/46246 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Michael Niewöhner <foss@mniewoehner.de>
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