I2C recovery Ignore

[parveen_y_]

Hi all,

I am working on development of a customized android tablet based on intel Baytrail-T.

In the above project we are facing a issue due to I2C.

Here is the step by step scenario of the issue:

1-Power on the board and let it boot to the android GUI.

2-Press the power button for some time and then power off the board from the Android Gui.

3-Now power on the board without disconnecting the power supply.

Then the board gets stuck and we get the beow logs continously.

[   14.198812] i2c_designware 80860F41:01: ===== REGISTER DUMP (i2c) =====

[   14.206396] i2c_designware 80860F41:01: DW_IC_CON:               0x65

[   14.213639] i2c_designware 80860F41:01: DW_IC_TAR:               0x18

[   14.220957] i2c_designware 80860F41:01: DW_IC_SS_SCL_HCNT:       0x214

[   14.228295] i2c_designware 80860F41:01: DW_IC_SS_SCL_LCNT:       0x272

[   14.235592] i2c_designware 80860F41:01: DW_IC_FS_SCL_HCNT:       0x50

[   14.242811] i2c_designware 80860F41:01: DW_IC_FS_SCL_LCNT:       0xad

[   14.250032] i2c_designware 80860F41:01: DW_IC_INTR_STAT:         0x0

[   14.257236] i2c_designware 80860F41:01: DW_IC_INTR_MASK:         0x246

[   14.264539] i2c_designware 80860F41:01: DW_IC_RAW_INTR_STAT:     0x10

[   14.271762] i2c_designware 80860F41:01: DW_IC_RX_TL:             0x20

[   14.279527] i2c_designware 80860F41:01: DW_IC_TX_TL:             0x20

[   14.286814] i2c_designware 80860F41:01: DW_IC_ENABLE:            0x1

[   14.293916] i2c_designware 80860F41:01: DW_IC_STATUS:            0x2

[   14.301360] i2c_designware 80860F41:01: DW_IC_TXFLR:             0x2

[   14.308489] i2c_designware 80860F41:01: DW_IC_RXFLR:             0x0

[   14.315595] i2c_designware 80860F41:01: DW_IC_TX_ABRT_SOURCE:    0x0

[   14.322718] i2c_designware 80860F41:01: DW_IC_DATA_CMD:          0x0

[   14.330427] i2c_designware 80860F41:01: ===============================

[   14.339419] i2c-2: recovery ignore

In the above condition either or both the SCL and SDA line remain low on boot time.

On this I2C we have only one device i.e Audio Codec from TI.

Please help us asap.

We are on very tight schedule.

Also if i reboot by removing the power supply then the board boots fine.

[JongIl_P_Intel]

Hello,

I think it's hard for you to get proper help here, because this is the forum for Intel SW debugger Tool like Intel System Debugger / Intel System Trace / Intel System Studio. (If you are not Intel SW tool user and want to get more info or try to use it, please check here: https://software.intel.com/en-us/intel-system-studio )

And please raise your issue to IPS, if it needs help on Intel side.

P.S It would be helpful to check the I2C initialization part in the Android linux kernel and I2C device driver module by adding kernel logs.

Thanks,

Jeff