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path: root/src/mainboard/google/kukui/sdram_params/sdram-lpddr4x-SDADA4CR-128G-4GB.c
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2019-10-09soc/mediatek/mt8183: Use cached calibration result for faster bootupHuayang Duan
Load calibration params from flash. If the format of the params is correct, use these calibration params for fast calibration to reduce the bootup time. Bootup time of DRAM partial calibration: - 1,349,385 usecs with low frequency - 924,698 usecs with middle frequency - 1,270,089 usecs with high frequency 3,544,172 usecs in total. Bootup time of DRAM fast calibration: - 216,663 usecs with low frequency - 328,220 usecs with middle frequency - 322,612 usecs with high frequency 867,495 usecs in total. BUG=b:139099592 BRANCH=none TEST=Boots correctly on Kukui Change-Id: I9ef4265dd369a1c276bb02294696556df927e7bc Signed-off-by: Huayang Duan <huayang.duan@mediatek.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35164 Reviewed-by: Hung-Te Lin <hungte@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-10-02mediatek/mt8183: Rename fields of struct sdram_paramsYu-Ping Wu
Two fields of struct sdram_params are renamed for future CL of DRAM full calibration. Field 'impedance' is also removed. BUG=none BRANCH=none TEST=emerge-kukui coreboot Change-Id: I2f9673fd5ea2e62ee971f0d81bdd12aaf565e31c Signed-off-by: Yu-Ping Wu <yupingso@chromium.org> Reviewed-on: https://review.coreboot.org/c/coreboot/+/35738 Reviewed-by: Hung-Te Lin <hungte@chromium.org> Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
2019-07-21mediatek/mt8183: support more EMCP LPDDR4X DDR bootupHuayang Duan
Support SANDISK SDADA4CR-128G, SAMSUNG KMDP6001DA-B425, KMDV6001DA-B620 EMCP LPDDR4X DDR bootup. BUG=b:80501386 BRANCH=none TEST=Boots correctly on EMCP DRAM Change-Id: I7de4c9a27282d3d00f51adf46dcb3d2f3984bfff Signed-off-by: Huayang Duan <huayang.duan@mediatek.com> Reviewed-on: https://review.coreboot.org/c/coreboot/+/33838 Tested-by: build bot (Jenkins) <no-reply@coreboot.org> Reviewed-by: Hung-Te Lin <hungte@chromium.org>