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On some MediaTek platforms, the cores' System Timers aren't initialized corectly by TEE, so we need to enable them manually, otherwise CNTVCT_EL0 will return 0, and any delay function will generate an infinite loop. Based on [1]. [1]: https://patchwork.kernel.org/project/linux-mediatek/patch/20220509210741.12020-3-angelogioacchino.delregno@collabora.com/ Signed-off-by: Alexandru Chimac <alex@chimac.ro>
11 lines
302 B
Plaintext
11 lines
302 B
Plaintext
if TIMER
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config TIMER_MTK_CPUXGPT
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bool "Timer initialization for MediaTek CPUXGPT"
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depends on MEDIATEK_MCUSYS
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default n
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help
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Some Mediatek platforms have a buggy ATF that doesn't enable
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the ARM Architected Timers. Say Y here if you have a device
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with one of those platforms.
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endif
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