| * Freescale Quad Serial Peripheral Interface(QuadSPI) |
| |
| Required properties: |
| - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi", |
| "fsl,imx7d-qspi", "fsl,imx6ul-qspi", |
| "fsl,ls1021-qspi" |
| - reg : the first contains the register location and length, |
| the second contains the memory mapping address and length |
| - reg-names: Should contain the reg names "QuadSPI" and "QuadSPI-memory" |
| - interrupts : Should contain the interrupt for the device |
| - clocks : The clocks needed by the QuadSPI controller |
| - clock-names : the name of the clocks |
| |
| Optional properties: |
| - fsl,qspi-has-second-chip: The controller has two buses, bus A and bus B. |
| Each bus can be connected with two NOR flashes. |
| Most of the time, each bus only has one NOR flash |
| connected, this is the default case. |
| But if there are two NOR flashes connected to the |
| bus, you should enable this property. |
| (Please check the board's schematic.) |
| |
| Example: |
| |
| qspi0: quadspi@40044000 { |
| compatible = "fsl,vf610-qspi"; |
| reg = <0x40044000 0x1000>, <0x20000000 0x10000000>; |
| reg-names = "QuadSPI", "QuadSPI-memory"; |
| interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>; |
| clocks = <&clks VF610_CLK_QSPI0_EN>, |
| <&clks VF610_CLK_QSPI0>; |
| clock-names = "qspi_en", "qspi"; |
| |
| flash0: s25fl128s@0 { |
| .... |
| }; |
| }; |
