TJA1100 initail failure issue in i.mx6

[andy_cc_huang]

Hi ,

I use a custom board with i.mx6DL + TJA1100 (RMII ) + fsl-bsp-4.1.15_2.0.0 SDK .

I write a tja1100 driver which reference net/phy/davicom.c as base, but our issue is the tja1100 always can not enter "link stable"   status but stuck on "link statup" stage.

    I connect our two custom board with one twisted pair cable in my environment. ( both setting to phy slave mode and managed option )

And here is the register dump value

BASIC_CTRL_REG=0x2100
BASIC_STAT_REG=0x1e1
id1=0x180 , id2=0xdc48
EXT_STAT_REG=0x80
EXT_CTRL_REG=0x9806   // link control enable = 1 , power_mode = 3
CONF_REG1=0x1911
CONF_REG2=0x2245
INT_STAT_REG=0x0
INT_ENABLE_REG=0xffff
COMM_STAT_REG=0x6004   // TX_MODE is SEND_Z mode  ,  PHY active , loc_rcvr =0 , rem_rcvr = 0 , scr_locked = 0
GENERAL_STAT_REG=0x4000
EXTERNAL_STAT_REG=0x0
LINK_FAIL_CNT_REG=0x0

After I set the LINK_CONTROL bit  into extended control register , I always get the same register value dump .

Could you give us some advise ?

Best,

Andy

[igorpadykov]

Hi Andy

one can check iomux settings (use imx6dl-sabreauto-flexcan1.dts as example)

linux-imx.git - i.MX Linux Kernel 

and test it in loopback mode. Test procedure can be found in imx-test package (test/can folder)

www.nxp.com/lgfiles/NMG/MAD/YOCTO/imx-test-5.7.tar.gz

Best regards
igor
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[andy_cc_huang]

Hi Igor,

  Thank for your reply.

But TJA1100 is broadr-reach ethernet phy not CAN bus.

Could you give other advises ?

Best,

Andy

[igorpadykov]

Hi Andy

sorry for confusion, please check

Is there a Linux driver for the PHY chip "TJA1100" for IMX6? 

Best regards
igor

[JohnDoe1z]

I'll chip in as I'm also interested in getting the TJA1100 to work with Linux/iMX6 in the near future.

Igor, did you read the the topic you've provided the link to? If yes, do you really think the content provides an answer to Andys question?

Does NXP have plans to provide a ready-to-use driver for their own NXP BroadR-Reach PHYs for Linux resp. the iMX family any time in the future?

BR,

John

[igorpadykov]

Hi John

>did you read the the topic you've provided the link to? If yes, do you really think the

>content provides an answer to Andys question?

I believe it answers and provides steps for working solution. Answer was try loopback

mode, please refer to Annex 1B System Level Test Modes BroadR specification

http://www.ieee802.org/3/1TPCESG/public/BroadR_Reach_Automotive_Spec_V3.0.pdf

Unfortunately TJA1100 is not supported in i.MX6 linux bsps and I am not

aware of plans of its support. For such cases recommended to apply to

NXP Professional Services which helps customers with porting new drivers

http://www.nxp.com/support/nxp-professional-services:PROFESSIONAL-SERVICE
Pro-Support contact www.nxp.com/prosupport

Best regards
igor

[andy_cc_huang]

Hi Igor,

     Thanks for your reply but my issue is still there.

Because my issue is stuck on tja1100 phy initial stage  ,  if I can not pass the initial phy stage.

I can not proceed the loopback mode testing.

Best,

Andy

[igorpadykov]

Hi Andy

unfortunately I am not aware of free BroadR phy drivers

which could be used as example. In general I can provide uboot BCM89810

(used in Broadcom Ethernet PHY Card) patch if that helps,

please create service request for that.

Best regards
igor

[andy_cc_huang]

Hi Igor,

    Actually I already created  a service request for that ( Case 00105659 ).

And then I got the linux driver patch for BCM89810 , but this patch seems not helping after survey that.

But if you can also provide  uboot BCM89810 patch it will be great .

Best,

Andy

[igorpadykov]

Hi Andy

I added some data to that sr.

Sorry no more is available, suggest to use professional services.

Best regards
igor