On Mon, 7 Jul 2014, Tony Lindgren wrote: > With v3.16-rc4 the PM features for omap3 should be working > finally for device tree based booting. At lest beaglexm and > 3xxevm should work. Just to follow up briefly on this: there was indeed a bug in the OMAP3 test scripts here that resulted in the UART wakeup not being enabled. Once that was fixed, system suspend-based chip-retention and chip-off modes work. However, scheduler-idle based chip-retention and chip-off still are not working. Looking at the logs, it appears that some domains are not dynamically going idle. For example, looking at: http://www.pwsan.com/omap/testlogs/test_v3.16-rc6/20140724142225/pm/37xxevm/37xxevm_log.txt it can be seen that core_pwrdm's retention count doesn't increase between the two PM debug dumps. The important lines are: core_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 and core_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 That's why the test reports mark the dynamic PM modes as failing. ... Here's an example where things worked: http://www.pwsan.com/omap/testlogs/test_v3.10/20130717134228/pm/3530es3beagle/3530es3beagle_log.txt In this one, it can be seen that the CORE counts transitioned from: core_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 to core_pwrdm (ON),OFF:0,RET:10,INA:0,ON:11,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 between the retention suspend/resume test ending and the dynamic retention idle test ending. - Paul # # cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:333,INA:0,ON:334,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 core_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 per_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 dss_pwrdm (ON),OFF:0,RET:333,INA:0,ON:334,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 cam_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 neon_pwrdm (ON),OFF:0,RET:297,INA:36,ON:334,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:297,INA:36,ON:334,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 usbhost_clkdm->usbhost_pwrdm (1) sgx_clkdm->sgx_pwrdm (0) per_clkdm->per_pwrdm (15) cam_clkdm->cam_pwrdm (0) dss_clkdm->dss_pwrdm (1) d2d_clkdm->core_pwrdm (0) iva2_clkdm->iva2_pwrdm (0) mpu_clkdm->mpu_pwrdm (0) core_l4_clkdm->core_pwrdm (22) core_l3_clkdm->core_pwrdm (1) neon_clkdm->neon_pwrdm (0) # # # # ./test_rootfs_access_nonexistent_file__ret_susp /bin/sh: 32: ./test_rootfs_access_nonexistent_file__ret_susp: not found # # %% End retention double suspend/resume UART wakeup test %% Start retention dynamic idle UART wakeup test for u in `ls -1d /sys/bus/platform/drivers/omap_uart/*.serial | paste -s -d' '`; do echo 3000 > $u/power/autosuspend_delay_ms; done # # # # # # cat /debug/pm_debug/count usbhost_pwrdm (ON),OFF:0,RET:433,INA:0,ON:434,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 core_pwrdm (ON),OFF:0,RET:2,INA:0,ON:3,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0,RET-MEMBANK2-OFF:0 per_pwrdm (ON),OFF:0,RET:23,INA:0,ON:24,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 dss_pwrdm (ON),OFF:0,RET:433,INA:0,ON:434,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 cam_pwrdm (RET),OFF:0,RET:1,INA:0,ON:1,RET-LOGIC-OFF:0,RET-MEMBANK1-OFF:0 neon_pwrdm (ON),OFF:0,RET:393,INA:40,ON:434,RET-LOGIC-OFF:0 mpu_pwrdm (ON),OFF:0,RET:393,INA:40,ON:434,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 usbhost_clkdm->usbhost_pwrdm (1) sgx_clkdm->sgx_pwrdm (0) per_clkdm->per_pwrdm (13) cam_clkdm->cam_pwrdm (0) dss_clkdm->dss_pwrdm (1) d2d_clkdm->core_pwrdm (0) iva2_clkdm->iva2_pwrdm (0) mpu_clkdm->mpu_pwrdm (0) core_l4_clkdm->core_pwrdm (21) core_l3_clkdm->core_pwrdm (1) neon_clkdm->neon_pwrdm (0) # # # # ./test_rootfs_access_nonexistent_file__ret_dyn /bin/sh: 44: ./test_rootfs_access_nonexistent_file__ret_dyn: not found # # for u in `ls -1d /sys/bus/platform/drivers/omap_uart/*.serial | paste -s -d' '`; do echo -1 > $u/power/autosuspend_delay_ms; done # # %% End retention dynamic idle UART wakeup test -- 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
