I has modified i.mx53 u-boot(mx53_loco) SD3 to NandF, delete the SD3's initialization and add the NandF initialization, the codes like this:
mxc_request_iomux(MX53_PIN_NANDF_WE_B, IOMUX_CONFIG_ALT0);
mxc_request_iomux(MX53_PIN_NANDF_RE_B, IOMUX_CONFIG_ALT0);
mxc_request_iomux(MX53_PIN_NANDF_CLE, IOMUX_CONFIG_ALT0);
mxc_request_iomux(MX53_PIN_NANDF_ALE, IOMUX_CONFIG_ALT0);
mxc_request_iomux(MX53_PIN_NANDF_WP_B, IOMUX_CONFIG_ALT0);
mxc_request_iomux(MX53_PIN_NANDF_RB0, IOMUX_CONFIG_ALT0);
mxc_request_iomux(MX53_PIN_NANDF_CS0, IOMUX_CONFIG_ALT0);
mxc_request_iomux(MX53_PIN_ATA_DATA0, IOMUX_CONFIG_ALT3);
mxc_request_iomux(MX53_PIN_ATA_DATA1, IOMUX_CONFIG_ALT3);
mxc_request_iomux(MX53_PIN_ATA_DATA2, IOMUX_CONFIG_ALT3);
mxc_request_iomux(MX53_PIN_ATA_DATA3, IOMUX_CONFIG_ALT3);
mxc_request_iomux(MX53_PIN_ATA_DATA4, IOMUX_CONFIG_ALT3);
mxc_request_iomux(MX53_PIN_ATA_DATA5, IOMUX_CONFIG_ALT3);
mxc_request_iomux(MX53_PIN_ATA_DATA6, IOMUX_CONFIG_ALT3);
mxc_request_iomux(MX53_PIN_ATA_DATA7, IOMUX_CONFIG_ALT3);
Then I connect a nandflash K9F2G08U0A with Samsung. Launch the board, we can see the nandflash's message like this:
NAND device: Manufacturer ID: 0xec, Chip ID: 0xda (Samsung NAND 256MiB 3,3V 8-bit)
Manufacturer : Samsung (0xec)
Device Code : 0xda
Cell Technology : SLC
Chip Size : 256 MiB
Pages per Block : 64
Page Geometry : 2048+64
ECC Strength : 4 bits
ECC Size : 512 B
Data Setup Time : 20 ns
Data Hold Time : 10 ns
Address Setup Time: 20 ns
GPMI Sample Delay : 6 ns
tREA : Unknown
tRLOH : Unknown
tRHOH : Unknown
Description : K9F2G08U0A
Bad block table found at page 131008, version 0x01
Bad block table found at page 130944, version 0x01
nand_read_bbt: Bad block at 0x00000f840000
256 MiB
But when SD1 read, the system has halted. If I disconnect the nandflash the system has normally to go to the kernel. What is the problem? Thanks!
