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BBB message SR 1: curr=1300000, delta_v=-14650, calc=1285350, act=1300002, gain=32

Benjamart Pantayoung
Prodigy 10 points
Other Parts Discussed in Thread: AM3352, AM3359

Dear Developers,

I have a question and need your help to explain this issue.

I'm using the Beaglebone black ver B which installed arago project from ti-sdk 6.

During the program is running, there is a message.

[ 3489.954650] SR 1: curr=1300000, delta_v=-14650, calc=1285350, act=1300002, gain=32

What is the message?

What cause the message occurred?

Is there any thing effect to hw or sw?

Does any one found this message like me? If you know, please help to explain what wrong. Thanks.

Benjamart

  • 0
    TI__Guru**** 393215 points

    Hi,

    This is a SmartReflex debug message. It doesn't have any effect on HW/SW functionality. Probably your board has processor silicon revision 1.0, for which SR won't work. If you disable SR this message should disappear.

  • 0 in reply to Biser Gatchev-XID
    TI__Mastermind 25235 points

    Hi,

    As Biser stated, this is just a SmartReflex debug message. It can be found inside <kernel_dir>/arch/arm/mach-omap2/am33xx-smartreflex-class2.c, set_voltage() function:

            /* this is the primary output for debugging SR activity */
            printk(KERN_DEBUG "SR %d: curr=%d, delta_v=%d, calc=%d, act=%d, gain=%02x\n",
                 i, prev_volt, delta_v, new_volt,
                regulator_get_voltage(sr->sen[i].reg),
                sr->sen[i].opp_data[sr->sen[i].curr_opp].e2v_gain);

    Best regards,
    Miroslav

  • 0 in reply to Miroslav Kiradzhiyski XID
    Prodigy 90 points

    I have the same problem. I have two AM3352 and both print this message.

    I also have three AM3359 and both don't print this message.

    My AM3352 is ES 2.1 and my AM3359 is ES1.0.

    Miroslav, doesn't it have any effect on HW/SW functionality this variation?

    Best regards,