imx6 and Micron NAND (MT29F2G08ABBEAH4)

[kiruthikavarada]

Micron NAND device connected to GPMI nand controller is not detected.

Pin mux settings seems correct.

root@imx6solosabreauto:~# dmesg | grep nand

[    0.440095] gpmi-nand 112000.gpmi-nand: Acq res

[    0.440759] gpmi-nand 112000.gpmi-nand: gpmi Nand Init

[    0.440805] gpmi-nand 112000.gpmi-nand: chip nr = 0

[    0.440818] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    0.440829] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    0.440871] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    0.440883] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    0.440892] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    0.440933] gpmi-nand 112000.gpmi-nand: len is 1

[    1.432864] gpmi-nand 112000.gpmi-nand: DMA timeout, last DMA :1

[    1.438888] gpmi-nand 112000.gpmi-nand: Show GPMI registers :

[    1.444667] gpmi-nand 112000.gpmi-nand: offset 0x000 : 0x21800001

[    1.450773] gpmi-nand 112000.gpmi-nand: offset 0x010 : 0x00000000

[    1.456891] gpmi-nand 112000.gpmi-nand: offset 0x020 : 0x00000000

[    1.463009] gpmi-nand 112000.gpmi-nand: offset 0x030 : 0x00000000

[    1.469111] gpmi-nand 112000.gpmi-nand: offset 0x040 : 0x00000000

[    1.475228] gpmi-nand 112000.gpmi-nand: offset 0x050 : 0x00000000

[    1.481330] gpmi-nand 112000.gpmi-nand: offset 0x060 : 0x0104000c

[    1.487447] gpmi-nand 112000.gpmi-nand: offset 0x070 : 0x00010203

[    1.493564] gpmi-nand 112000.gpmi-nand: offset 0x080 : 0x05000000

[    1.499666] gpmi-nand 112000.gpmi-nand: offset 0x090 : 0x03023336

[    1.505782] gpmi-nand 112000.gpmi-nand: offset 0x0a0 : 0x00000090

[    1.511884] gpmi-nand 112000.gpmi-nand: offset 0x0b0 : 0xff000005

[    1.518002] gpmi-nand 112000.gpmi-nand: offset 0x0c0 : 0x00000000

[    1.524119] gpmi-nand 112000.gpmi-nand: offset 0x0d0 : 0x05010000

[    1.530221] gpmi-nand 112000.gpmi-nand: Show BCH registers :

[    1.535903] gpmi-nand 112000.gpmi-nand: offset 0x000 : 0x00000000

[    1.542005] gpmi-nand 112000.gpmi-nand: offset 0x010 : 0x00000010

[    1.548121] gpmi-nand 112000.gpmi-nand: offset 0x020 : 0x00000000

[    1.554238] gpmi-nand 112000.gpmi-nand: offset 0x030 : 0x00000000

[    1.560339] gpmi-nand 112000.gpmi-nand: offset 0x040 : 0x00000000

[    1.566458] gpmi-nand 112000.gpmi-nand: offset 0x050 : 0x00000000

[    1.572559] gpmi-nand 112000.gpmi-nand: offset 0x060 : 0x00000000

[    1.578679] gpmi-nand 112000.gpmi-nand: offset 0x070 : 0xe4e4e4e4

[    1.584797] gpmi-nand 112000.gpmi-nand: offset 0x080 : 0x070a4080

[    1.590900] gpmi-nand 112000.gpmi-nand: offset 0x090 : 0x10da4080

[    1.597016] gpmi-nand 112000.gpmi-nand: offset 0x0a0 : 0x070a4080

[    1.603133] gpmi-nand 112000.gpmi-nand: offset 0x0b0 : 0x10da4080

[    1.609235] gpmi-nand 112000.gpmi-nand: offset 0x0c0 : 0x070a4080

[    1.615350] gpmi-nand 112000.gpmi-nand: offset 0x0d0 : 0x10da4080

[    1.621453] gpmi-nand 112000.gpmi-nand: offset 0x0e0 : 0x070a4080

[    1.627568] gpmi-nand 112000.gpmi-nand: offset 0x0f0 : 0x10da4080

[    1.633687] gpmi-nand 112000.gpmi-nand: offset 0x100 : 0x00000000

[    1.639790] gpmi-nand 112000.gpmi-nand: offset 0x110 : 0x00000000

[    1.645905] gpmi-nand 112000.gpmi-nand: offset 0x120 : 0x00000000

[    1.652007] gpmi-nand 112000.gpmi-nand: offset 0x130 : 0x00000000

[    1.658123] gpmi-nand 112000.gpmi-nand: offset 0x140 : 0x00000000

[    1.664239] gpmi-nand 112000.gpmi-nand: offset 0x150 : 0x20484342

[    1.670342] gpmi-nand 112000.gpmi-nand: offset 0x160 : 0x01000000

[    1.676457] gpmi-nand 112000.gpmi-nand: offset 0x170 : 0x00000000

[    1.682570] gpmi-nand 112000.gpmi-nand: BCH Geometry :

[    1.729256] gpmi-nand 112000.gpmi-nand: len is 1

[    1.729270] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    1.729281] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    1.729290] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    1.729300] gpmi-nand 112000.gpmi-nand: I am in error

[    1.729310] gpmi-nand 112000.gpmi-nand: Chip: 0, Error -22

[    1.734822] gpmi-nand 112000.gpmi-nand: Chip fails

[    1.739625] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739637] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739647] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739657] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739666] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739675] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739685] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739696] gpmi-nand 112000.gpmi-nand: len is 1

[    1.739714] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    1.739723] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    1.739732] gpmi-nand 112000.gpmi-nand: CMD CTRL

[    1.739742] gpmi-nand 112000.gpmi-nand: I am in error

[    1.739752] gpmi-nand 112000.gpmi-nand: Chip: 0, Error -22

[    1.745263] gpmi-nand 112000.gpmi-nand: Chip fails

[    1.750065] gpmi-nand 112000.gpmi-nand: len is 1

[    1.750074] nand: No NAND device found

[    1.750094] gpmi-nand 112000.gpmi-nand: chip nr = -1

[    1.750135] gpmi-nand 112000.gpmi-nand: driver registration failed: -19

Any clues to debug.

[igorpadykov]

Hi kiruthika

from log seems it even can not read NAND ID,

had you checked hardware with SDK (simple NAND ID read procedure) ?

i.MX 6Series Platform SDK : Bare-metal SDK for the i.MX 6

Best regards

igor

[kiruthikavarada]

Hi igorpadykov,

       Will check and come back.

       Thanks,

        Kirthika

[akshay_bhat]

Hi Kirthika,

Did you have to change anything in the device tree or driver to get the NAND to work?

Thanks,

Akshay

[kiruthikavarada]

Hi Akshay,

I added the following lines to DTS file

1. &gpmi {

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_gpmi_nand_1>;

        status = "okay";

};

2. Make sure that pins of pinctrl_gpmi_nand_1 is not muxed with any other devices.

With kernel configs enabled for GPMI NAND it works straight away.

Thanks,

Kirthika

[akshay_bhat]

Thanks for the quick reply, setting the correct pinmux fixed my issue. Appreciate your help :smileyhappy: