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| 00:39.13 | Mirell | Aaaand, he's not here. |
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| 17:04.01 | jzarr_ | hi all, anyone familiar with the ISP1760 USB host controler? |
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| 20:31.53 | roxfan | i've heard of it |
| 20:32.14 | jzarr_ | isp1760? |
| 20:32.22 | roxfan | yes |
| 20:32.35 | jzarr_ | would you have any idea how to force the thing into suspend mode? |
| 20:35.11 | roxfan | from linux sources: |
| 20:35.12 | roxfan | isp116x_write_reg32(isp116x, wIndex ? HCRHPORT2 : HCRHPORT1, RH_PS_PSS); |
| 20:35.27 | roxfan | that's for case USB_PORT_FEAT_SUSPEND: |
| 20:36.25 | jzarr_ | that dosnt mean too much to me, im in a RTOS, we are not using the device, just want to bit bang it into suspend so it dosnt draw power |
| 20:37.39 | roxfan | ah so you mean to turn off the chip itself? |
| 20:38.23 | jzarr_ | yup, dosnt need to wake up at all, just want the thing off |
| 20:38.28 | roxfan | it should have a power pin or similar methinks |
| 20:39.03 | roxfan | or you can't control those? |
| 20:39.04 | jzarr_ | not from what i can tell, ive googled, and some places say if you set the SUSPEND_N pin high it will suspend, tried that, didnt work |
| 20:40.08 | roxfan | how about PSW1/2/3_N ? |
| 20:40.47 | roxfan | oh looks like that's output |
| 20:41.10 | jzarr_ | PSWX are all tied to power rails, not controlled from the CPU |
| 20:41.43 | jzarr_ | linux does it right cause i can see the SUSPEND_N go high when it suspends, cant figure out what they are doing ;-) |
| 20:41.58 | roxfan | ok, then i guess you need to turn it off via software means |
| 20:42.23 | jzarr_ | i have it memory mapped so i can bit bang all the registers, just cant get it to suspend |
| 20:42.54 | roxfan | looks like you need Power Down Control register (address 0354h) |
| 20:43.16 | jzarr_ | yup, that sets what happens when it does suspend |
| 20:43.45 | jzarr_ | as far as i can tell, you need to write to PORTSC1 to make it suspend |
| 20:44.23 | roxfan | try setting PORT1_POWER to 0? |
| 20:45.14 | jzarr_ | tried that, when i write to PR it come out in state 0x1803 |
| 20:45.30 | jzarr_ | the app notes say it needs to be 0x1004 to be able to suspend |
| 20:45.55 | jzarr_ | i have all interupts disabled, and have set USBCMD to 0 |
| 20:47.02 | roxfan | hm, you've read the app note they have? |
| 20:47.15 | jzarr_ | backwards and forwards ;-) |
| 20:47.28 | jzarr_ | both app notes, one on the linux driver, and the other on suspend/resume |
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