| Brian Norris | 1d15831 | 2015-11-16 14:34:52 -0800 | [diff] [blame] | 1 | * SPI NOR flash: ST M25Pxx (and similar) serial flash chips |
| Marek Vasut | 12ad2be | 2012-09-24 03:39:39 +0200 | [diff] [blame] | 2 | |
| 3 | Required properties: |
| 4 | - #address-cells, #size-cells : Must be present if the device has sub-nodes |
| 5 | representing partitions. |
| Brian Norris | 8ff16cf | 2015-03-27 10:29:49 -0700 | [diff] [blame] | 6 | - compatible : May include a device-specific string consisting of the |
| Brian Norris | 1d15831 | 2015-11-16 14:34:52 -0800 | [diff] [blame] | 7 | manufacturer and name of the chip. A list of supported chip |
| 8 | names follows. |
| Brian Norris | 8947e39 | 2015-05-14 10:32:53 -0700 | [diff] [blame] | 9 | Must also include "jedec,spi-nor" for any SPI NOR flash that can |
| 10 | be identified by the JEDEC READ ID opcode (0x9F). |
| Brian Norris | 1d15831 | 2015-11-16 14:34:52 -0800 | [diff] [blame] | 11 | |
| 12 | Supported chip names: |
| 13 | at25df321a |
| 14 | at25df641 |
| 15 | at26df081a |
| 16 | mr25h256 |
| 17 | mx25l4005a |
| 18 | mx25l1606e |
| 19 | mx25l6405d |
| 20 | mx25l12805d |
| 21 | mx25l25635e |
| 22 | n25q064 |
| 23 | n25q128a11 |
| 24 | n25q128a13 |
| 25 | n25q512a |
| 26 | s25fl256s1 |
| 27 | s25fl512s |
| 28 | s25sl12801 |
| 29 | s25fl008k |
| 30 | s25fl064k |
| 31 | sst25vf040b |
| 32 | m25p40 |
| 33 | m25p80 |
| 34 | m25p16 |
| 35 | m25p32 |
| 36 | m25p64 |
| 37 | m25p128 |
| 38 | w25x80 |
| 39 | w25x32 |
| 40 | w25q32 |
| 41 | w25q32dw |
| 42 | w25q80bl |
| 43 | w25q128 |
| 44 | w25q256 |
| 45 | |
| 46 | The following chip names have been used historically to |
| 47 | designate quirky versions of flash chips that do not support the |
| 48 | JEDEC READ ID opcode (0x9F): |
| 49 | m25p05-nonjedec |
| 50 | m25p10-nonjedec |
| 51 | m25p20-nonjedec |
| 52 | m25p40-nonjedec |
| 53 | m25p80-nonjedec |
| 54 | m25p16-nonjedec |
| 55 | m25p32-nonjedec |
| 56 | m25p64-nonjedec |
| 57 | m25p128-nonjedec |
| 58 | |
| Marek Vasut | 12ad2be | 2012-09-24 03:39:39 +0200 | [diff] [blame] | 59 | - reg : Chip-Select number |
| 60 | - spi-max-frequency : Maximum frequency of the SPI bus the chip can operate at |
| 61 | |
| 62 | Optional properties: |
| 63 | - m25p,fast-read : Use the "fast read" opcode to read data from the chip instead |
| 64 | of the usual "read" opcode. This opcode is not supported by |
| 65 | all chips and support for it can not be detected at runtime. |
| 66 | Refer to your chips' datasheet to check if this is supported |
| 67 | by your chip. |
| 68 | |
| 69 | Example: |
| 70 | |
| 71 | flash: m25p80@0 { |
| 72 | #address-cells = <1>; |
| 73 | #size-cells = <1>; |
| Brian Norris | 8947e39 | 2015-05-14 10:32:53 -0700 | [diff] [blame] | 74 | compatible = "spansion,m25p80", "jedec,spi-nor"; |
| Marek Vasut | 12ad2be | 2012-09-24 03:39:39 +0200 | [diff] [blame] | 75 | reg = <0>; |
| 76 | spi-max-frequency = <40000000>; |
| 77 | m25p,fast-read; |
| 78 | }; |