omap2 suspend consumption

Peter Li

Other Parts Discussed in Thread: DM3730, OMAP3515

Hi ，

I have a problem with the omap3515 and dm3730 board . My boards use linux kernel 2.6.37 source code. and I use the usb ohci host function, when I initialize the mm1_txse0 pin(gpio 15) for this (original code)

omap_mux_init_signal("mm1_txse0", OMAP_PIN_INPUT_PULLDOWN);

so when the system enter suspend state,the power consumption will increase about 12mAh.

and i do not use usb ohci host function, single initialize the mm1_txse0 pin, the same ploblem will be came out .

I test the omap3515 board and dm3730 board , and the pin connect nothing or connect something. the ploblem will take place . i don't know it is regular.

Can somebody help me? thanks.

Best Regards,

Peter

over 12 years ago

0 Shankari G over 12 years ago

TI__Mastermind 43955 points

Hi Peter,

There is a dedicated OMAP35x Processors Forum

for omap35x. Moving your post for better assistance.

Regards,

Shankari.

0 Cvetolin Shulev-XID over 12 years ago

TI__Guru 65405 points

Hi Peter,

Each one configured pull-up represents to resistance of 50 to 100 kΩ per default or 10 to 50 kΩ according to the selected mode. In the worst case this corresponds to 0.18 mAh if there is not additional resistors. For a full description of the pull-up drive strength programming, see the PRG_SDMMC_PUSTRENGTH configuration register bit field in the System Control Module chapter of the AM/DM37x Multimedia Device Technical Reference Manual at the link:

http://www.ti.com/lit/ug/sprugn4r/sprugn4r.pdf

You can find useful information and description about dm3730 power consumption depending on operating state, frequency and used peripheries in the power estimation spreadsheet at the link:

http://processors.wiki.ti.com/index.php/AM/DM37x_Power_Estimation_Spreadsheet

Tsvetolin Shulev

0 Peter Li over 12 years ago in reply to Cvetolin Shulev-XID

Prodigy 80 points

thank you very much.

I am so sorry that these days i am busy and not come here to reply.

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omap2 suspend consumption