* STMicroelectronics Quad Serial Peripheral Interface(QuadSPI) Required properties: - compatible: should be "st,stm32f469-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 "qspi" "qspi_mm" - interrupts: should contain the interrupt for the device - clocks: the phandle of the clock needed by the QSPI controller - A pinctrl must be defined to set pins in mode of operation for QSPI transfer Optional properties: - resets: must contain the phandle to the reset controller. A spi flash must be a child of the nor_flash node and could have some properties. Also see jedec,spi-nor.txt. Required properties: - reg: chip-Select number (QSPI controller may connect 2 nor flashes) - spi-max-frequency: max frequency of spi bus Optional property: - spi-rx-bus-width: see ../spi/spi-bus.txt for the description Example: qspi: spi@a0001000 { compatible = "st,stm32f469-qspi"; reg = <0xa0001000 0x1000>, <0x90000000 0x10000000>; reg-names = "qspi", "qspi_mm"; interrupts = <91>; resets = <&rcc STM32F4_AHB3_RESET(QSPI)>; clocks = <&rcc 0 STM32F4_AHB3_CLOCK(QSPI)>; pinctrl-names = "default"; pinctrl-0 = <&pinctrl_qspi0>; flash@0 { reg = <0>; spi-rx-bus-width = <4>; spi-max-frequency = <108000000>; ... }; };