am335x to set: lower clock while linux boot?

Cao Yiling

Other Parts Discussed in Thread: AM3352

Hi, is it possible to manually set to lower clock while linux boot? I have some heat issue with certain type of machine.

I am using AM3352 720MHz, hopefully can set it to 600 MHz

0 Miroslav Kiradzhiyski XID over 11 years ago

Hi,

Please let us know which version of the Sitara AM335x SDK/PSP you are using.

Best regards,
Miroslav

0 Cao Yiling over 11 years ago in reply to Miroslav Kiradzhiyski XID

Hi I am using: ti-sdk-am335x-evm-05.06.00.00. kernel version is 3.2, u-boot is 2013.01 thanks!

Also If I have set voltage/frequency for CPU/MPU in uboot, will this get reset by kernel at later stage of booting?

Thanks!

0 Miroslav Kiradzhiyski XID over 11 years ago in reply to Cao Yiling

You can change the mpu_pll value inside the am33xx_spl_board_init() function in <u-boot_dir>/board/ti/am335x/board.c.

I believe it won't later be reset by the kernel.

Best regards,
Miroslav

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