powerpc/85xx: add hardware automatically enter pw20 state

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Using hardware features make core automatically enter PW20 state.
Set a TB count to hardware, the effective count begins when PW10
is entered. When the effective period has expired, the core will
proceed from PW10 to PW20 if no exit conditions have occurred during
the period.

Signed-off-by: Wang Dongsheng <dongsheng.wang@freescale.com>
Signed-off-by: Scott Wood <scottwood@freescale.com>

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Wang Dongsheng 2013-12-17 16:17:01 +08:00 • committed by Scott Wood

parent 202e059ce3

commit 1d47ddf7c3

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arch/powerpc/kernel/cpu_setup_fsl_booke.S

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