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MLK-12531 mx6sxsabresd: Add CM4 fast boot up demo

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This is a demo that CM4 will boot up by u-boot without typing any
command. It boots up at u-boot early init, try to minimize the time
from power up to the CM4 running.
Since CM4 runs on QSPI NOR XIP, we have to disable the QSPI driver in
u-boot to avoid conflict.

RDC for shared GPIO1 is added, but not enabled, because the kernel is
not ready for shared GPIO1. Users can uncomment the CONFIG_IMX_RDC to
enable it.

Some legacy codes in mx6sxsabreauto are removed. We only need this work
on mx6sxsabresd as a demo.

Signed-off-by: Ye Li <ye.li@nxp.com>
This commit is contained in:
Ye Li
2016-03-10 17:18:57 +08:00
parent 43fe988af2
commit f66842f79d
5 changed files with 33 additions and 13 deletions
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5
configs/mx6sxsabresd_m4fastup_defconfig Normal file
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CONFIG_ARM=y
CONFIG_ARCH_MX6=y
CONFIG_TARGET_MX6SXSABRESD=y
CONFIG_SYS_EXTRA_OPTIONS="IMX_CONFIG=board/freescale/mx6sxsabresd/imximage.cfg,SYS_BOOT_QSPI,SYS_AUXCORE_FASTUP"
CONFIG_CMD_GPIO=y