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Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: I2c6ffe885717997540a0a9721310e355a3b6a87d
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44704
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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Reference datasheet:
External Memory Interface (EMI).pdf, Document No: RH-A-2020-0055.
Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: I3b778698a09c999252fef3153ac1e869ea9d90cd
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44703
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
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Memory PLL is used to provide the basic clock for dram controller
and DDRPHY. PLL must be initialized as predefined way.
First, enable PLL POWER and ISO, wait at least 30us, release ISO, then
configure PLL frequency and enable PLL master switch.
At last, enable control ability for SPM to switch between active and
idle when system is switched between normal and low power mode.
TEST=Confirm Memory PLL frequency is right by frequency meter
Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: Ieb4e6cbf19da53d653872b166d3191c7b010dca6
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44702
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Frans Hendriks <fhendriks@eltan.com>
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Signed-off-by: Huayang Duan <huayang.duan@mediatek.com>
Change-Id: Ie4877b69de1bfa4ff981d8eb386efbddb9e0f5c2
Reviewed-on: https://review.coreboot.org/c/coreboot/+/44700
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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