OMAP-L138在DSP中可以使用哪个定时器

四个定时器都可以用。

怎么会都可以用的，默认Linux内核中使用的哪个，DSP上应该不可以再用了吧，两个内核可以使用同一个外设？

回答可以不可以负责一些？

The DA850/OMAP-L138/AM18xx SoCs have four 64-bit timers.

Timer 0 is configured as two 32-bit timers by kernel at boot-up.
Bottom half (12) is used as clockevent.
Top half (34) is used as free-run counter.
Timer 1 will be configured as watchdog timer if support is enabled.
Timer 2 is left untouched.
Timer 3 is left untouched.

两个核不能共用外设。
麻烦您将问题描述清楚一些。