433acc2d3d
When we only enable XO_SOC and mask most BBLPM requests, the BBLPM HW arbiter will have DCXO core to enter Baseband Low-Power Mode(BBLPM). Under BBLPM mode, inaccurate(about 1.5KHz offset) 26MHz clocks from crystal is provided and crystal voltage will drop from 1.8V to 0.7V or lower. In order to ensure the stability by always outputting an accuarate system clock when system is running. We should disable BBLPM when only XO_SOC enabled. BRANCH=kukui TEST=accurate 26MHz provided and correct crystal voltage swing Change-Id: Iea72a964507a19735cf92e3774cd8a94c06545b2 Signed-off-by: Weiyi Lu <weiyi.lu@mediatek.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/37136 Reviewed-by: Hung-Te Lin <hungte@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org> |
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