topic Re: LS1021A - Custom Board NAND Issue- No NAND device Found in Layerscape

LS1021A - Custom Board NAND Issue- No NAND device Found

sanjuvarghese — Thu, 28 Jan 2016 16:29:59 GMT

Hi,

I am facing an issue in my custom ls1021a board. We have a NAND flash (1GB) on the AD0-AD7 IFC Bus. While booting, the Device ID and the Manufacture ID is coming as 0,0. I have identified that the "nand_scan_ident(mtd, 1, NULL);" function is unable to find the device. NAND configuration in my config file is

#define CONFIG_NAND_FSL_IFC


	#define CONFIG_SYS_NAND_BASE 0x7e800000
	#define CONFIG_SYS_NAND_BASE_PHYS CONFIG_SYS_NAND_BASE
	#define CONFIG_SYS_NAND_CSPR_EXT (0x0)


	#define CONFIG_SYS_NAND_CSPR (CSPR_PHYS_ADDR(CONFIG_SYS_NAND_BASE_PHYS) \
		\| CSPR_PORT_SIZE_8 \
		\| CSPR_MSEL_NAND \
		\| CSPR_V)

	#define CONFIG_SYS_NAND_AMASK IFC_AMASK(128*1024)
	#define CONFIG_SYS_NAND_CSOR (CSOR_NAND_ECC_ENC_EN \
		\| CSOR_NAND_ECC_DEC_EN \
		\| CSOR_NAND_ECC_MODE_4 \
		\| CSOR_NAND_RAL_3 \
		\| CSOR_NAND_PGS_2K \
		\| CSOR_NAND_SPRZ_64 \
		\| CSOR_NAND_PB(64) )

	#define CONFIG_SYS_NAND_ONFI_DETECTION

	#define CONFIG_SYS_NAND_FTIM0 (FTIM0_NAND_TCCST(0x7) \| \
		FTIM0_NAND_TWP(0x18) \| \
		FTIM0_NAND_TWCHT(0x7) \| \
		FTIM0_NAND_TWH(0xa))
	#define CONFIG_SYS_NAND_FTIM1 (FTIM1_NAND_TADLE(0x32) \| \
		FTIM1_NAND_TWBE(0x39) \| \
		FTIM1_NAND_TRR(0xe) \| \
		FTIM1_NAND_TRP(0x18))
	#define CONFIG_SYS_NAND_FTIM2 (FTIM2_NAND_TRAD(0xf) \| \
		FTIM2_NAND_TREH(0xa) \| \
		FTIM2_NAND_TWHRE(0x1e))
	#define CONFIG_SYS_NAND_FTIM3 0x0

	#define CONFIG_SYS_NAND_BASE_LIST {CONFIG_SYS_NAND_BASE}
	#define CONFIG_SYS_MAX_NAND_DEVICE 1
	#define CONFIG_MTD_NAND_VERIFY_WRITE
	#define CONFIG_CMD_NAND

	#define CONFIG_SYS_NAND_BLOCK_SIZE (512 * 1024)

	#define CONFIG_SYS_CSPR0_EXT CONFIG_SYS_NAND_CSPR_EXT
	#define CONFIG_SYS_CSPR0 CONFIG_SYS_NAND_CSPR
	#define CONFIG_SYS_AMASK0 CONFIG_SYS_NAND_AMASK
	#define CONFIG_SYS_CSOR0 CONFIG_SYS_NAND_CSOR
	#define CONFIG_SYS_CS0_FTIM0 CONFIG_SYS_NAND_FTIM0
	#define CONFIG_SYS_CS0_FTIM1 CONFIG_SYS_NAND_FTIM1
	#define CONFIG_SYS_CS0_FTIM2 CONFIG_SYS_NAND_FTIM2
	#define CONFIG_SYS_CS0_FTIM3 CONFIG_SYS_NAND_FTIM3

The u-boot output is

U-Boot 2015.01+ls1+g3281947 (Jan 28 2016 - 21:31:43)

CPU: Freescale LayerScape LS1021E, Version: 2.0, (0x87081120)

Clock Configuration:

CPU0(ARMV7):1000 MHz,

Bus:300 MHz, DDR:800 MHz (1600 MT/s data rate),

Reset Configuration Word (RCW):

00000000: 0608000a 00000000 00000000 00000000

00000010: 00000000 08407900 40105a00 21046000

00000020: 00000000 00000000 00000000 080b8000

00000030: 20024805 001b3340 00000000 00000000

Board: LS1021AIOT

I2C: ready

DRAM: 1 GiB

Using SERDES1 Protocol: 0 (0x0)

THe Manufacture Id is 0,0

No NAND device found

0 MiB

MMC: FSL_SDHC: 0

SF: Detected S25FL512S_256K with page size 512 Bytes, erase size 256 KiB, total 64 MiB

EEPROM: Read failed.

PCIe1: Root Complex no link, regs @ 0x3400000

PCIe2: disabled

In: serial

Out: serial

Err: serial

SEC0: RNG instantiated

SATA link 0 timeout.

AHCI 0001.0300 1 slots 1 ports ? Gbps 0x1 impl SATA mode

flags: 64bit ncq pm clo only pmp fbss pio slum part ccc

scanning bus for devices...

Found 0 device(s).

Can anyone help me to solve the issue?

Thanks in advance.

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

ufedor — Thu, 28 Jan 2016 17:04:23 GMT

Please provide the processor connection schematics as searchable PDF.

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

sanjuvarghese — Thu, 28 Jan 2016 17:37:43 GMT

Hi,

Thanks For the Response.

Please find the NAND flash interface section in the PDF attached.

Thanks

Sanju

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

ufedor — Fri, 29 Jan 2016 02:25:46 GMT

In the provided schematics IFC_AD[0:7] are connected to IO[0:7] which is not correct - should be IO[7:0].

Refer to the attached screenshot from the LS1021ARM.

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

sanjuvarghese — Fri, 29 Jan 2016 14:10:44 GMT

Hi,

Thanks for the Reply. That was the issue. The NAND is working now in the u-boot. A s I am getting the Manufacture ID.

But still the Linux is unable to find the NAND flash. As the error is always coming as

"fsl,ifc-nand 0.ifc: fsl_ifc_nand_probe: failed to get resource

fsl,ifc-nand: probe of 0.ifc failed with error -22"

The Device Tree Bindings shown below

ls1021a.dtsi

----------------

ifc: ifc@1530000 {

compatible = "fsl,ifc","simple-bus";

reg = <0x0 0x1530000 0x0 0x10000>;

interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;

}

ls1021aiot.dtsi :

---------------------

&ifc {

#address-cells = <2>;

#size-cells = <1>;

ranges = <0x0 0x0 0x7e800000 0x10000>;

status = "okay";

nand@0{

#address-cells = <1>;

#size-cells = <1>;

compatible = "fsl,ifc-nand";

reg = <0x0 0 0x10000>;

bank-width = <1>;

device-width = <1>;

};

In the fsl-ifc-nand.c probe function, of_address_to_resource(node, 0, &res); is always failing.

Can you help us to solve the issue in linux?

Thanks in advance

Sanju

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

ufedor — Fri, 29 Jan 2016 18:07:14 GMT

Please explain how exactly you fixed the IFC_AD[0:7] connection issue.

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

sanjuvarghese — Fri, 29 Jan 2016 18:24:34 GMT

Hi,

For testing we removed all the 0 Ohm resistors from the IFC AD lines and connected it reversely as you mentioned. In U-boot, NAND chip is getting detected and showing 1024MiB as expected. I can erase/write/read the NAND chip from u-boot. But linux is not detecting the chip.

Any Idea on this Issue?

Is there any other way to change the functionality of these pins without reversing it externally?

Thanks

Sanju

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

ufedor — Sat, 30 Jan 2016 05:33:08 GMT

The described connection modification is correct.

It will be more convenient to create new thread for the Linux-related questions.

Re: LS1021A - Custom Board NAND Issue- No NAND device Found

shunpinglin — Wed, 08 Nov 2017 02:31:33 GMT

hello,

I have also custom ls1021a board with nand flash. Now we need boot from nand flash. except modifying the board configure file, what files do I modify? Do the rcw and pbi have modify?

Thank you!