Tool/software:
Dear Ti expert
I am trying to change the C7x clock frequency.
The purpose is to meet the speed grade J. For the J grade, the C7x should be 912.5 MHz.
#1. Changed the code
mcu_plus_sdk_j722s_09_02_00_41/source/drivers/bootloader/soc/j722s/bootloader_soc.c
{ /* CSL_CORE_ID_C75SS0_0 */
.tisciProcId = SCICLIENT_PROC_ID_C7X256V0_C7XV_CORE_0,
.tisciDevId = TISCI_DEV_C7X256V0_C7XV_CORE_0,
.tisciClockId = TISCI_DEV_C7X256V0_C7XV_CORE_0_C7XV_CLK,
//.defaultClockHz = (uint32_t)(1000*1000000),
.defaultClockHz = (uint32_t)(912.5*1000000), // default value is (uint32_t)(1000*1000000),
.coreName = "c75ss0-0",
},
{ /* CSL_CORE_ID_C75SS1_0 */
.tisciProcId = SCICLIENT_PROC_ID_C7X256V1_C7XV_CORE_0,
.tisciDevId = TISCI_DEV_C7X256V1_C7XV_CORE_0,
.tisciClockId = TISCI_DEV_C7X256V1_C7XV_CORE_0_C7XV_CLK,
//.defaultClockHz = (uint32_t)(1000*1000000),
.defaultClockHz = (uint32_t)(912.5*1000000), // default value is (uint32_t)(1000*1000000),
.coreName = "c75ss1-0",
},
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It did not work.
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#2. Using k3conf
k3conf set clock 208 0 912500000
k3conf set clock 268 0 912500000
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It did not work.
error with Invalid clock arguments
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Please give us guide to solve the problem.
Thank you.
Sincerely
Sukwon Kim
