Hello everyone !!
I am using sama5d27 sip that is my custom board , My board is booting fine but clock speed is very slow . I mean when I am typing on it it prints very slowly on my screen . Please anyone suggest me what is going wrong with me .
Thanks !!
SAMA5D27 clock speed
Moderator: nferre
- blue_z
- Location: USA
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Provide a qualitative description by using a (calibrated) oscilloscope or frequency counter.
Read and apply "How To Ask Questions The Smart Way" before posting again.
Regards
Re: SAMA5D27 clock speed
That's a subjective (and vague) description.sat123 wrote: ↑... clock speed is very slow . I mean when I am typing on it it prints very slowly on my screen .
Provide a qualitative description by using a (calibrated) oscilloscope or frequency counter.
Read and apply "How To Ask Questions The Smart Way" before posting again.
Regards
- nferre
- Site Admin
Post
Re: SAMA5D27 clock speed
Hi,
You can give us some clues by printing the clock summary in debugfs:
## first, if not already mounted in your rootfs, mount the debugfs
# mount -t debugfs debugfs /sys/kernel/debug/
## then, print the summary:
# cat /sys/kernel/debug/clk/clk_summary
clock enable_cnt prepare_cnt rate accuracy phase
----------------------------------------------------------------------------------------
slow_rc_osc 0 0 32768 250000000 0
main_rc_osc 0 0 12000000 100000000 0
main_xtal 1 1 24000000 0 0
main_osc 1 1 24000000 0 0
mainck 2 2 24000000 0 0
utmick 2 2 480000000 0 0
sdmmc1_gclk 0 0 480000000 0 0
[..]
You can give us some clues by printing the clock summary in debugfs:
## first, if not already mounted in your rootfs, mount the debugfs
# mount -t debugfs debugfs /sys/kernel/debug/
## then, print the summary:
# cat /sys/kernel/debug/clk/clk_summary
clock enable_cnt prepare_cnt rate accuracy phase
----------------------------------------------------------------------------------------
slow_rc_osc 0 0 32768 250000000 0
main_rc_osc 0 0 12000000 100000000 0
main_xtal 1 1 24000000 0 0
main_osc 1 1 24000000 0 0
mainck 2 2 24000000 0 0
utmick 2 2 480000000 0 0
sdmmc1_gclk 0 0 480000000 0 0
[..]
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