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| author | Masahiro Yamada <yamada.m@jp.panasonic.com> | 2015-01-23 00:24:22 +0900 |
|---|---|---|
| committer | Tom Rini <trini@ti.com> | 2015-01-23 16:56:09 -0500 |
| commit | 37b608a52dcb13312a4f7ccea199cd6bac76d298 (patch) | |
| tree | 9246259c04eae06ca01a7af206a2ee872318217f /board/icecube/README.Lite5200B_low_power | |
| parent | a258e732a7e2608695c9244eb10998af8f968f5b (diff) | |
| download | u-boot-imx-37b608a52dcb13312a4f7ccea199cd6bac76d298.zip u-boot-imx-37b608a52dcb13312a4f7ccea199cd6bac76d298.tar.gz u-boot-imx-37b608a52dcb13312a4f7ccea199cd6bac76d298.tar.bz2 | |
powerpc: remove icecube_5200, Lite5200, cpci5200, mecp5200, pf5200
These boards are still non-generic boards.
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Reinhard Arlt <reinhard.arlt@esd-electronics.com>
Diffstat (limited to 'board/icecube/README.Lite5200B_low_power')
| -rw-r--r-- | board/icecube/README.Lite5200B_low_power | 22 |
1 files changed, 0 insertions, 22 deletions
diff --git a/board/icecube/README.Lite5200B_low_power b/board/icecube/README.Lite5200B_low_power deleted file mode 100644 index 5b04fbb..0000000 --- a/board/icecube/README.Lite5200B_low_power +++ /dev/null @@ -1,22 +0,0 @@ -Lite5200B wakeup from low-power mode (CONFIG_LITE5200B_PM) ----------------------------------------------------------- - -Low-power mode as described in Lite5200B User's Manual, means that -with support of MC68HLC908QT1 microcontroller (refered to as QT), -everything but the SDRAM can be powered down. This brings -maximum power saving, while one can still restore previous state -quickly. - -Quick overview where U-Boot comes into the picture: -- OS saves device states -- OS saves wakeup handler address to physical 0x0, puts SDRAM into - self-refresh and signals to QT, it should power down the board -- / board is sleeping here / -- someone presses SW4 (connected to QT) -- U-Boot checks PSC2_4 pin, if QT drives it down, then we woke up, - so get SDRAM out of self-refresh and transfer control to OS - wakeup handler -- OS restores device states - -This was tested on Linux with USB and Ethernet in use. Adding -support for other devices is an OS issue. |