Tool/software: Linux
We use MT29F16G08AJADAWP as our nand chip which has two cs signals. So we modified the device tree in k2e sdk as below:
&aemif {
cs0 {
#address-cells = <2>;
#size-cells = <1>;
clock-ranges;
ranges;
ti,cs-chipselect = <0>;
/* all timings in nanoseconds */
ti,cs-min-turnaround-ns = <12>;
ti,cs-read-hold-ns = <6>;
ti,cs-read-strobe-ns = <23>;
ti,cs-read-setup-ns = <9>;
ti,cs-write-hold-ns = <8>;
ti,cs-write-strobe-ns = <23>;
ti,cs-write-setup-ns = <8>;
nand@0,0x0 {
compatible = "ti,keystone-nand","ti,davinci-nand";
#address-cells = <1>;
#size-cells = <1>;
reg = <0 0 0x4000000
1 0 0x00000100>;
ti,davinci-chipselect = <0>;
ti,davinci-mask-ale = <0x2000>;
ti,davinci-mask-cle = <0x4000>;
ti,davinci-mask-chipsel = <0>;
nand-ecc-mode = "hw";
ti,davinci-ecc-bits = <4>;
nand-on-flash-bbt;
partition@0 {
label = "u-boot";
reg = <0x0 0x100000>;
read-only;
};
partition@100000 {
label = "params";
reg = <0x100000 0x80000>;
read-only;
};
partition@180000 {
label = "ubifs";
reg = <0x180000 0x3FE80000>;
};
};
};
cs1 {
#address-cells = <2>;
#size-cells = <1>;
clock-ranges;
ranges;
ti,cs-chipselect = <1>;
/* all timings in nanoseconds */
ti,cs-min-turnaround-ns = <12>;
ti,cs-read-hold-ns = <6>;
ti,cs-read-strobe-ns = <23>;
ti,cs-read-setup-ns = <9>;
ti,cs-write-hold-ns = <8>;
ti,cs-write-strobe-ns = <23>;
ti,cs-write-setup-ns = <8>;
nand@0,0x4000000 {
compatible = "ti,keystone-nand","ti,davinci-nand";
#address-cells = <1>;
#size-cells = <1>;
reg = <0 0x4000000 0x4000000
1 0 0x00000100>;
ti,davinci-chipselect = <1>;
ti,davinci-mask-ale = <0x2000>;
ti,davinci-mask-cle = <0x4000>;
ti,davinci-mask-chipsel = <0>;
nand-ecc-mode = "hw";
ti,davinci-ecc-bits = <4>;
nand-on-flash-bbt;
partition@40000000 {
label = "nand2";
reg = <0x40000000 0x40000000>;
};
};
};
};
When we burn the nand and start the kernel, we get the error : nand: device found, Manufacturer ID: 0x2c, Chip ID: 0xd3
[ 17.057983] nand: Micron MT29F16G08AJADAWP
[ 17.062086] nand: 2048 MiB, SLC, erase size: 128 KiB, page size: 2048, OOB size: 64
[ 17.070063] Bad block table found at page 1048512, version 0x01
[ 17.076513] Bad block table found at page 1048448, version 0x01
[ 17.082999] nand_read_bbt: bad block at 0x000024820000
[ 17.088258] 3 ofpart partitions found on MTD device 30000000.nand
[ 17.094362] Creating 3 MTD partitions on "30000000.nand":
[ 17.099783] 0x000000000000-0x000000100000 : "u-boot"
[ 17.105530] 0x000000100000-0x000000180000 : "params"
[ 17.111217] 0x000000180000-0x000040000000 : "ubifs"
[ 17.117544] davinci_nand 30000000.nand: controller rev. 2.5
[ 17.123883] davinci_nand: probe of 34000000.nand failed with error -16
[ 17.131063] platform snd-soc-dummy: set dma_pfn_offset00780000
[ 17.138020] NET: Registered protocol family 10
[ 17.143121] sit: IPv6 over IPv4 tunneling driver
[ 17.148172] NET: Registered protocol family 17
[ 17.152775] Key type dns_resolver registered
[ 17.157174] Registering SWP/SWPB emulation handler
[ 17.163238] ubi0: attaching mtd4
[ 17.354977] (NULL net_device): Link is Down
[ 17.359168] (NULL net_device): Link is Down
[ 17.363357] (NULL net_device): Link is Down
[ 17.367557] (NULL net_device): Link is Down
[ 17.371746] (NULL net_device): Link is Down
[ 17.375944] (NULL net_device): Link is Down
[ 21.454044] ubi0 error: scan_peb: bad image sequence number 1864223580 in PEB 8176, expected 1078639942
[ 21.463471] Erase counter header dump:
[ 21.467235] magic 0x55424923
[ 21.470987] version 1
[ 21.473954] ec 1
[ 21.476933] vid_hdr_offset 2048
[ 21.480162] data_offset 4096
[ 21.483391] image_seq 1864223580
[ 21.487152] hdr_crc 0xf63135e2
[ 21.490903] erase counter header hexdump:
[ 21.497589] ubi0 error: ubi_attach_mtd_dev: failed to attach mtd4, error -22
[ 21.504663] UBI error: cannot attach mtd4
[ 21.508661] hctosys: unable to open rtc device (rtc0)
[ 21.524950] ALSA device list:
[ 21.527933] No soundcards found.
[ 21.531787] UBIFS error (pid: 1): cannot open "ubi0:rootfs", error -19VFS: Cannot open root device "ubi0:rootfs" or unknown-block(0,0): error -19
How do we modify the device tree correctly.
