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| author | Anson Huang <b20788@freescale.com> | 2013-12-24 17:19:21 -0500 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2013-12-31 09:36:48 +0800 |
| commit | 48c95841110036a95840c6782f27d841ead9a583 (patch) | |
| tree | 2549fedb49658f07058a075a0c4c6a2a937090b6 /include | |
| parent | b4e844f019aa6b46601ef3d04af645b36dffaa0d (diff) | |
| download | blackbird-op-linux-48c95841110036a95840c6782f27d841ead9a583.tar.gz blackbird-op-linux-48c95841110036a95840c6782f27d841ead9a583.zip | |
ARM: imx: improve the comment of CCM lpm SW workaround
Improve the comment of SW workaround for CCM lpm issue using
hardware errata description to avoid confusion.
ERR007265: CCM: When improper low-power sequence is used, the SoC
enters low power mode before the ARM core executes WFI.
Software workaround:
1) Software should trigger IRQ #32 (IOMUX) to be always pending
by setting IOMUX_GPR1_GINT.
2) Software should then unmask IRQ #32 in GPC before setting CCM
Low-Power mode.
3) Software should mask IRQ #32 right after CCM Low-Power mode is
set (set bits 0-1 of CCM_CLPCR).
Signed-off-by: Anson Huang <b20788@freescale.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'include')
0 files changed, 0 insertions, 0 deletions
