Difference between revisions of "Novena Issue Log"

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* DDR3: need to come up with alternate poke files for different SO-DIMM types
 
* DDR3: need to come up with alternate poke files for different SO-DIMM types
 
* DDR3: need to figure out how to configure u-boot to recognize greater amounts of DRAM
 
* DDR3: need to figure out how to configure u-boot to recognize greater amounts of DRAM
−
* MMC: need to figure out how to get u-boot to recognize microSD cards (they have no CD line)
+
* MMC: USDHC3 has to have the CD check return 1 at all times. '''Patch not yet checked into trunk''' - todo bunnie
−
** Issue: MMC implementation of scan() only checks the first device in the device list. Two devices are defined, 3 and 4; only 3 ever gets queried (there is no device 3). In order to work around this, the listing of partitions in the structures is swapped so 4 is before 3, and will have index 0 on the scans. This isn't a correct fix, it just gets us past this bug. Proper fix is to figure out why the scanner only wants to scan just the first entry in the MMC descriptor structures.
 
−
** Issue: [[https://github.com/sutajiokousagi/u-boot-imx6/blob/u-boot-imx-staging/drivers/mmc/mmc.c#L1330 send-op_cond in mmc.c]] is timing out after card detect.
 
  
 
===Linux===
 
===Linux===
 +
* MMC: device tree novena.dts descriptor edited to note that USDHC3 port is non-removable in order to enable boot '''Patch not yet checked into trunk''' - todo bunnie
 +
* Power: Driver for power currently assumes fixed regulators, an incorrect assumption. This needs to be changed to use the PFUZE PMIC. Currently, no drivers exist in the source tree (based off of the sabrelite). Recommend using Sabre board for smart devices as the base image instead of sabrelite - todo xobs

Revision as of 00:14, 12 December 2012

Known issues.

Hardware

  • Inrush current limiting for 3.3V_DELAYED turnon: R38N should be increased to about 30k. Need to verify with experiment turn-on timing margin (i.e. put smaller values in until failure to determine how much margin is available at 30k to ensure consistency across process variation)

Software

U-boot

  • DDR3: need to come up with alternate poke files for different SO-DIMM types
  • DDR3: need to figure out how to configure u-boot to recognize greater amounts of DRAM
  • MMC: USDHC3 has to have the CD check return 1 at all times. Patch not yet checked into trunk - todo bunnie

Linux

  • MMC: device tree novena.dts descriptor edited to note that USDHC3 port is non-removable in order to enable boot Patch not yet checked into trunk - todo bunnie
  • Power: Driver for power currently assumes fixed regulators, an incorrect assumption. This needs to be changed to use the PFUZE PMIC. Currently, no drivers exist in the source tree (based off of the sabrelite). Recommend using Sabre board for smart devices as the base image instead of sabrelite - todo xobs
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