1TI QSPI controller. 2 3Required properties: 4- compatible : should be "ti,dra7xxx-qspi" or "ti,am4372-qspi". 5- reg: Should contain QSPI registers location and length. 6- reg-names: Should contain the resource reg names. 7 - qspi_base: Qspi configuration register Address space 8 - qspi_mmap: Memory mapped Address space 9 - (optional) qspi_ctrlmod: Control module Address space 10- interrupts: should contain the qspi interrupt number. 11- #address-cells, #size-cells : Must be present if the device has sub-nodes 12- ti,hwmods: Name of the hwmod associated to the QSPI 13 14Recommended properties: 15- spi-max-frequency: Definition as per 16 Documentation/devicetree/bindings/spi/spi-bus.txt 17 18Optional properties: 19- syscon-chipselects: Handle to system control region contains QSPI 20 chipselect register and offset of that register. 21 22NOTE: TI QSPI controller requires different pinmux and IODelay 23parameters for Mode-0 and Mode-3 operations, which needs to be set up by 24the bootloader (U-Boot). Default configuration only supports Mode-0 25operation. Hence, "spi-cpol" and "spi-cpha" DT properties cannot be 26specified in the slave nodes of TI QSPI controller without appropriate 27modification to bootloader. 28 29Example: 30 31For am4372: 32qspi: qspi@47900000 { 33 compatible = "ti,am4372-qspi"; 34 reg = <0x47900000 0x100>, <0x30000000 0x4000000>; 35 reg-names = "qspi_base", "qspi_mmap"; 36 #address-cells = <1>; 37 #size-cells = <0>; 38 spi-max-frequency = <25000000>; 39 ti,hwmods = "qspi"; 40}; 41 42For dra7xx: 43qspi: qspi@4b300000 { 44 compatible = "ti,dra7xxx-qspi"; 45 reg = <0x4b300000 0x100>, 46 <0x5c000000 0x4000000>, 47 reg-names = "qspi_base", "qspi_mmap"; 48 syscon-chipselects = <&scm_conf 0x558>; 49 #address-cells = <1>; 50 #size-cells = <0>; 51 spi-max-frequency = <48000000>; 52 ti,hwmods = "qspi"; 53}; 54