Svetoslav Trochev wrote: >> BTW, for a start you can fix SD power control issues (due to a bad >> merge the function got fubarred), if you run with SD inserted you'll >> have extra ~20mA feeding card even in suspend. >> >> > Well I just looked the GTA01 schematics and SD card interface an found > first design problem. ;) It can only account for ~30uA leaking from the > IO_3V3 power bus to SD_3V3 power bus through R7501 and R7502 when U7501 > is off. I believe we are missing blocking diode that will prevent > current to flow between SD and IO power buses. (I don't remember if the > simple diode can stop 30uA leak. ) > Of course you are talking about ~20mA so I guess the problem is in the > kernel that keeps the power to the SD card on at all time. Right? ( > Signal /SD_ON coming from pin M14 on S3C2410X ). > Great, I just made my first mistake :) After the printing the schematics on bigger sheet of paper I see that there is no connection between R7502 and R7501 because we have two different signals: /SD_ON and /SD_CD. So the right signal that powers on/off the card is /SD_ON connected to pin F4 on SoC.
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