Hi, I am attempting to reduce overall power consumption on a Board like the Beagle Board. I am using the 2.6.39-pm kernel from Steve Sakoman. Here is my system as it stands now: # cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:3,INA:1,ON:5,RET-LOGIC-OFF:0,RET-MEMBANK1- OFF:0 sgx_pwrdm (OFF),OFF:1,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1- OFF:0 per_pwrdm (ON),OFF:0,RET:3,INA:0,ON:4,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF: 0 dss_pwrdm (ON),OFF:0,RET:3,INA:0,ON:4,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF: 0 cam_pwrdm (RET),OFF:0,RET:2,INA:0,ON:2,RET-LOGIC-OFF:0,RET-MEMBANK1- OFF:0 core_pwrdm (ON),OFF:0,RET:0,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1- OFF:0,RET-MEMBANK2-OFF:0 neon_pwrdm (ON),OFF:0,RET:3,INA:0,ON:4,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:3,INA:0,ON:4,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF: 0 iva2_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1- OFF:0,RET-MEMBANK2-OFF:0,RET-MEMBANK3-OFF:0,RET-MEMBANK4-OFF:0 per_clkdm->per_pwrdm (20) usbhost_clkdm->usbhost_pwrdm (3) cam_clkdm->cam_pwrdm (0) dss_clkdm->dss_pwrdm (1) core_l4_clkdm->core_pwrdm (23) core_l3_clkdm->core_pwrdm (4) d2d_clkdm->core_pwrdm (0) sgx_clkdm->sgx_pwrdm (0) iva2_clkdm->iva2_pwrdm (0) neon_clkdm->neon_pwrdm (0) mpu_clkdm->mpu_pwrdm (0) prm_clkdm->wkup_pwrdm (0) cm_clkdm->core_pwrdm (0) I was wondering if it is possible or even beneficial to turn off various subsystems (like DSS) or anything else that can be switched off to save on power usage. I'm not sure how to go about turning these things off. My goal is to knock off another 100mA. Any other tips or additional things I can look at to further reduce power? Regards, CJ -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
