Hi Biju, > On RZ/V2M, we have 16 timer channels. First channel we planned to use it as clock source > And remaining 15 channels as clock event devices. I used clocksource-switch to verify > Clocksource functionality. But currently I do not know how to test the clock event? I would love to help, but sadly I can't. CMT/TMU haven't been changed in ages. So, when I upstream them for new SoCs, I test basic/slightly advanced functionality with 'clocksource-switch' and assume the rest has been tested before. I didn't test clocksource events. Magnus seems to have started something, but AFAIU it does the same as your devmem tests: https://patchwork.kernel.org/project/linux-renesas-soc/list/?series=&submitter=19&state=*&q=cmt&archive=&delegate= Sorry I can't be of more help. Wolfram
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