[PATCH V2] ARM: tegra30: fix power up sequence for boot_secondary
swarren at wwwdotorg.org
Thu Jan 3 12:19:33 EST 2013
On 01/03/2013 12:31 AM, Joseph Lo wrote:
> The power up sequence is different on the cold boot CPU and the CPU
> that resumed from the hotplug. For the cold boot CPU, it was been power
> gated as default. To power up the cold boot CPU, the power should be
> un-gated by un toggling the power gate register manually.
> For the CPU that resumed from the hotplug, after un-halted the CPU. The
> flow controller will un-gate the power of the CPU. No need to manually
> control, just wait the power be resumed and continue the power up
> sequence after the CPU power is ready.
> Based on the work by:
> Varun Wadekar <vwadekar at nvidia.com>
Applied to Tegra's for-3.9/soc branch.
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