| Michael Kurz | b1a8de7 | 2017-01-22 16:04:23 +0100 | [diff] [blame] | 1 | STM32 QSPI controller device tree bindings |
| 2 | -------------------------------------------- |
| 3 | |
| 4 | Required properties: |
| 5 | - compatible : should be "st,stm32-qspi". |
| 6 | - reg : 1. Physical base address and size of SPI registers map. |
| 7 | 2. Physical base address & size of mapped NOR Flash. |
| 8 | - spi-max-frequency : Max supported spi frequency. |
| 9 | - status : enable in requried dts. |
| 10 | |
| 11 | Connected flash properties |
| 12 | -------------------------- |
| 13 | - spi-max-frequency : Max supported spi frequency. |
| 14 | - spi-tx-bus-width : Bus width (number of lines) for writing (1-4) |
| 15 | - spi-rx-bus-width : Bus width (number of lines) for reading (1-4) |
| 16 | - memory-map : Address and size for memory-mapping the flash |
| 17 | |
| 18 | Example: |
| 19 | qspi: quadspi@A0001000 { |
| 20 | compatible = "st,stm32-qspi"; |
| 21 | #address-cells = <1>; |
| 22 | #size-cells = <0>; |
| 23 | reg = <0xA0001000 0x1000>, <0x90000000 0x10000000>; |
| 24 | reg-names = "QuadSPI", "QuadSPI-memory"; |
| 25 | interrupts = <92>; |
| 26 | spi-max-frequency = <108000000>; |
| 27 | status = "okay"; |
| 28 | |
| 29 | qflash0: n25q128a { |
| 30 | #address-cells = <1>; |
| 31 | #size-cells = <1>; |
| 32 | compatible = "micron,n25q128a13", "spi-flash"; |
| 33 | spi-max-frequency = <108000000>; |
| 34 | spi-tx-bus-width = <4>; |
| 35 | spi-rx-bus-width = <4>; |
| 36 | memory-map = <0x90000000 0x1000000>; |
| 37 | reg = <0>; |
| 38 | }; |
| 39 | }; |