https://community.nxp.com/t5/Layerscape/System-Clock-Frequency-for-LS1028ardb/m-p/1499019#M10972 <P>I am using the LS1028ARDB (Armv8) board. The RCW setting for System Clock is 0x258 which is 100 MHz. I am using the arm generic timer to calculate execution time. The&nbsp;cntfrq_el0 reads a zero. I am running the bare metal configuration. To check the the counter i read the&nbsp;cntpct_el0. But to calculate the time I need the actual frequency. Arm says that for Armv8 the system clock is usually 1 to 50 Mhz. I dont know what value of system clock should I be using?</P> Mon, 01 Aug 2022 21:14:20 GMT SoccerMom 2022-08-01T21:14:20Z https://community.nxp.com/t5/Layerscape/System-Clock-Frequency-for-LS1028ardb/m-p/1499019#M10972 <P>I am using the LS1028ARDB (Armv8) board. The RCW setting for System Clock is 0x258 which is 100 MHz. I am using the arm generic timer to calculate execution time. The&nbsp;cntfrq_el0 reads a zero. I am running the bare metal configuration. To check the the counter i read the&nbsp;cntpct_el0. But to calculate the time I need the actual frequency. Arm says that for Armv8 the system clock is usually 1 to 50 Mhz. I dont know what value of system clock should I be using?</P> Mon, 01 Aug 2022 21:14:20 GMT https://community.nxp.com/t5/Layerscape/System-Clock-Frequency-for-LS1028ardb/m-p/1499019#M10972 SoccerMom 2022-08-01T21:14:20Z https://community.nxp.com/t5/Layerscape/System-Clock-Frequency-for-LS1028ardb/m-p/1508071#M11048 <P><SPAN>It is 25MHz for LS1028A.</SPAN></P> Thu, 18 Aug 2022 07:33:50 GMT https://community.nxp.com/t5/Layerscape/System-Clock-Frequency-for-LS1028ardb/m-p/1508071#M11048 yipingwang 2022-08-18T07:33:50Z