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authorRen Kuo <ren.kuo@quanta.corp-partner.google.com>2021-12-22 18:42:43 +0800
committerNico Huber <nico.h@gmx.de>2022-01-01 14:20:27 +0000
commite15e64054c059f58569b4aa9ce132aee8c8a2e48 (patch)
treefe41edd638e01f5ab68ddf2c482d8221273da6c7 /src/mainboard/lenovo/t410/acpi/platform.asl
parent355fb2fb984cc264f4452d4bbffbd3666c71906e (diff)
mb/google/dedede/var/magolor: Set core display clock to 172.8 MHz
When using the default initial core display clock frequency, Magolor has a rare stability issue where the startup of Chrome OS in secure mode may hang. Slowing the initial core display clock frequency down to 172.8 MHz as per Intel recommendation avoids this problem. Depend on CL: https://review.coreboot.org/c/coreboot/+/60009 The CdClock=0xff is set in dedede baseboard,and we overwrite it as 0x0 (172.8 MHz) for magolor. BUG=b:206557434 BRANCH=dedede TEST=Build firmware and verify on fail DUTs. Check the DUTs can boot up in secure mode well. Change-Id: I5a0ad2bed79b37775184f0bd0a0ef024900cbe34 Signed-off-by: Ren Kuo <ren.kuo@quanta.corp-partner.google.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/60301 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Nico Huber <nico.h@gmx.de> Reviewed-by: Angel Pons <th3fanbus@gmail.com>
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