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9cdc99919a
Multiple CPU clusters are used in Hisilicon HiP04 SoC. Now use MCPM framework to manage power on HiP04 SoC. Changelog: v20: * Disable L2 prefetch when the whole cluster is down. * Move disabling snoop filter into power_down() after L2 prefetch disabled. * Remove delay in wait_for_power_down() after L2 prefetch disabled. * Add the sleep polling in wait_for_power_down() again since we need to wait L2 when the cluster is down. v19: * Add comments on those delay hacks. * Update on checking core enabled counts in wait_for_power_down(). v18: * Fix to release resource in probe(). * Check whether cpu is already up in the process of making cpu down. * Add udelay in power up/down sequence. * Optimize on setting relocation entry. * Optimize on polling status in wait_for_power_down(). * Add mcpm critical operations. v17: * Parse bootwrapper parameters in DTS file. * Fix to use msleep() in spinlock region. v16: * Parse bootwrapper parameters in command line instead. v13: * Restore power down operation in MCPM. * Fix disabling snoop filter issue in MCPM. v12: * Use wfi as power down state in MCPM. * Remove wait_for_powerdown() in MCPM because wfi is used now. Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org> Reviewed-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Wei Xu <xuwei5@hisilicon.com> |
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