TI QSPI controller. Required properties: - compatible : should be "ti,dra7xxx-qspi" or "ti,am4372-qspi". - reg: Should contain QSPI registers location and length. - reg-names: Should contain the resource reg names. - qspi_base: Qspi configuration register Address space - qspi_mmap: Memory mapped Address space - (optional) qspi_ctrlmod: Control module Address space - interrupts: should contain the qspi interrupt number. - #address-cells, #size-cells : Must be present if the device has sub-nodes - ti,hwmods: Name of the hwmod associated to the QSPI Recommended properties: - spi-max-frequency: Definition as per Documentation/devicetree/bindings/spi/spi-bus.txt Optional properties: - syscon-chipselects: Handle to system control region contains QSPI chipselect register and offset of that register. NOTE: TI QSPI controller requires different pinmux and IODelay parameters for Mode-0 and Mode-3 operations, which needs to be set up by the bootloader (U-Boot). Default configuration only supports Mode-0 operation. Hence, "spi-cpol" and "spi-cpha" DT properties cannot be specified in the slave nodes of TI QSPI controller without appropriate modification to bootloader. Example: For am4372: qspi: qspi@4b300000 { compatible = "ti,am4372-qspi"; reg = <0x47900000 0x100>, <0x30000000 0x4000000>; reg-names = "qspi_base", "qspi_mmap"; #address-cells = <1>; #size-cells = <0>; spi-max-frequency = <25000000>; ti,hwmods = "qspi"; }; For dra7xx: qspi: qspi@4b300000 { compatible = "ti,dra7xxx-qspi"; reg = <0x4b300000 0x100>, <0x5c000000 0x4000000>, reg-names = "qspi_base", "qspi_mmap"; syscon-chipselects = <&scm_conf 0x558>; #address-cells = <1>; #size-cells = <0>; spi-max-frequency = <48000000>; ti,hwmods = "qspi"; };