1 ST Microelectronics Flexible Static Memory Controller (FSMC)
5 - compatible : "st,spear600-fsmc-nand", "stericsson,fsmc-nand"
6 - reg : Address range of the mtd chip
7 - reg-names: Should contain the reg names "fsmc_regs", "nand_data", "nand_addr" and "nand_cmd"
10 - bank-width : Width (in bytes) of the device. If not present, the width
12 - nand-skip-bbtscan: Indicates the BBT scanning should be skipped
13 - timings: array of 6 bytes for NAND timings. The meanings of these bytes
15 byte 0 TCLR : CLE to RE delay in number of AHB clock cycles, only 4 bits
16 are valid. Zero means one clockcycle, 15 means 16 clock
18 byte 1 TAR : ALE to RE delay, 4 bits are valid. Same format as TCLR.
19 byte 2 THIZ : number of HCLK clock cycles during which the data bus is
20 kept in Hi-Z (tristate) after the start of a write access.
21 Only valid for write transactions. Zero means zero cycles,
23 byte 3 THOLD : number of HCLK clock cycles to hold the address (and data
24 when writing) after the command deassertation. Zero means
25 one cycle, 255 means 256 cycles.
26 byte 4 TWAIT : number of HCLK clock cycles to assert the command to the
27 NAND flash in response to SMWAITn. Zero means 1 cycle,
29 byte 5 TSET : number of HCLK clock cycles to assert the address before the
30 command is asserted. Zero means one cycle, 255 means 256
32 - bank: default NAND bank to use (0-3 are valid, 0 is the default).
33 - nand-ecc-mode : see nand-controller.yaml
34 - nand-ecc-strength : see nand-controller.yaml
35 - nand-ecc-step-size : see nand-controller.yaml
37 Can support 1-bit HW ECC (default) or if stronger correction is required,
42 fsmc: flash@d1800000 {
43 compatible = "st,spear600-fsmc-nand";
46 reg = <0xd1800000 0x1000 /* FSMC Register */
47 0xd2000000 0x0010 /* NAND Base DATA */
48 0xd2020000 0x0010 /* NAND Base ADDR */
49 0xd2010000 0x0010>; /* NAND Base CMD */
50 reg-names = "fsmc_regs", "nand_data", "nand_addr", "nand_cmd";
54 timings = /bits/ 8 <0 0 0 2 3 0>;