Hi everyone, I’m working on a board that using intel iSMT controller to communicate with custom I2C slave device. But sometimes I got IRDPE error while reading data from device. And I got information that there is a Errata about this error and has a workaround. Does anyone know the detail about that Errata ? And have this workaround already be implemented in the latest i2c-ismt driver ? Thanks. Best regards Kenny Cheng. === IRDPE Error message === === Kernel version 3.13.11 === [ 96.776427] priv->dma_buffer (after completion) - 06 24 00 00 24 01 A1 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF [ 96.799780] Processing completed descriptor [ 96.804464] Descriptor struct: ffff8802739ae010 [ 96.809631] tgtaddr_rw=0xFE [ 96.812846] wr_len_cmd=0x07 [ 96.816059] rd_len= 0x28 [ 96.819280] control= 0x68 [ 96.822503] status= 0x00 [ 96.825727] retry= 0x00 [ 96.828949] rxbytes= 0x00 [ 96.832171] txbytes= 0x00 [ 96.835393] dptr_low= 0x73FCFB78 [ 96.839198] dptr_high= 0x00000002 [ 96.842995] Dump of the iSMT General Registers [ 96.847969] GCTRL.... : (0xffffc90000c74000)=0x00000000 [ 96.854011] SMTICL... : (0xffffc90000c74008)=0x0000000000000000 [ 96.860830] ERRINTMSK : (0xffffc90000c74010)=0x00000000 [ 96.866871] ERRAERMSK : (0xffffc90000c74014)=0x00000000 [ 96.872905] ERRSTS... : (0xffffc90000c74018)=0x00000200 <- IRDPE Error [ 96.878948] ERRINFO.. : (0xffffc90000c7401c)=0x00000029 [ 96.884988] Dump of the iSMT Master Registers [ 96.889864] MDBA..... : (0xffffc90000c74100)=0x00000002739AE000 [ 96.896685] MCTRL.... : (0xffffc90000c74108)=0x00020010 [ 96.902728] MSTS..... : (0xffffc90000c7410c)=0x00020000 [ 96.908772] MDS...... : (0xffffc90000c74110)=0x0000001F [ 96.914814] RPOLICY.. : (0xffffc90000c74114)=0x00061020 [ 96.920856] TBBA..... : (0xffffc90000c74200)=0x0000000000000000 [ 96.927668] TCTRL.... : (0xffffc90000c74208)=0x00000010 [ 96.933710] TSTS..... : (0xffffc90000c7420c)=0x00000000 [ 96.939752] TBS...... : (0xffffc90000c74210)=0x00000000 [ 96.945795] HTHP..... : (0xffffc90000c74218)=0x00000000 [ 96.951838] FTTP..... : (0xffffc90000c7421c)=0x00000000 [ 96.957880] TRxCTRL.. : (0xffffc90000c74220)=0x00000058 [ 96.963921] TRxSTS... : (0xffffc90000c74224)=0x00000000 [ 96.969955] TACTRL... : (0xffffc90000c74228)=0x00000000 [ 96.975998] TPOLICY.. : (0xffffc90000c7422c)=0x0000001A [ 96.982041] GPBRCTRL. : (0xffffc90000c74240)=0x00000089 [ 96.988084] GPBRDBUF. : (0xffffc90000c74244)=0x00000000 [ 96.994126] SMTARPCTRL: (0xffffc90000c74280)=0x00000000 [ 97.000168] UDID0.... : (0xffffc90000c74290)=0x8086000000000000 [ 97.006989] UUDID0... : (0xffffc90000c74298)=0x8108808600000024 [ 97.013808] UDID1.... : (0xffffc90000c742a0)=0x8086000000000001 [ 97.020617] UUDID1... : (0xffffc90000c742a8)=0x8108808600000024 [ 97.027436] SPGT..... : (0xffffc90000c74300)=0x40000005 [ 97.033478] SPMT..... : (0xffffc90000c74304)=0x08080000 [ 97.039521] SPST..... : (0xffffc90000c74308)=0x00000000 [ 97.045563] SMBFT.... : (0xffffc90000c7430c)=0x00002024 [ 97.051604] CLTC..... : (0xffffc90000c74310)=0x00000962 -- To unsubscribe from this list: send the line "unsubscribe linux-i2c" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
