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The current SPI NOR speed mainpll_d7_d2 (78MHz) is too fast for MT8186's
HW design, which is capable of up to 52MHz. Therefore, lower the speed
to univpll_d3_d8 (52MHz).
BUG=b:218775654
TEST=emerge-corsola coreboot
TEST=Boot time didn't increase significantly
BRAHCH=none
Change-Id: I5a03e41d4ce47d45b97a805b9b98877ef0dac7b7
Signed-off-by: Yu-Ping Wu <yupingso@chromium.org>
Reviewed-on: https://review.coreboot.org/c/coreboot/+/61796
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Reviewed-by: Hung-Te Lin <hungte@chromium.org>
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DCM (dynamic clock management) can dynamically slow down or gate clocks
during CPU or bus idle. Enable DCM settings on the MT8186 platform.
TEST=build pass and check register ok
BUG=b:202871018
Signed-off-by: Edward-JW Yang <edward-jw.yang@mediatek.corp-partner.google.com>
Change-Id: I82add5ae629d59f7d6773e26ac9cba9d54ab8caf
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59338
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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1. Turn off L2C SRAM and reconfigure as L2 cache
Mediatek SoC uses part of the L2 cache as SRAM before DRAM is ready.
After DRAM is ready, we should invoke disable_l2c_sram to reconfigure
the L2C SRAM as L2 cache.
2. Configure DMA buffer in DRAM
Set DRAM DMA to be non-cacheable to load blob correctly.
TEST=build pass
BUG=b:202871018
Signed-off-by: Rex-BC Chen <rex-bc.chen@mediatek.com>
Change-Id: If56d29cdd7d9dfaed05e129754aa1f887a581482
Reviewed-on: https://review.coreboot.org/c/coreboot/+/59247
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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Add PLL and clock init code, frequency meter and APIs for
raising little CPU/CCI frequency.
TEST=build pass
BUG=b:202871018
Signed-off-by: Chun-Jie Chen <chun-jie.chen@mediatek.com>
Change-Id: Id46d0708e7ba0c1a4043a5dce33ef69421cb59c5
Reviewed-on: https://review.coreboot.org/c/coreboot/+/58936
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
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