QSPI Flash外设配置
Quad-SPI接口（QUADSPI外设）用于将处理器与串行NOR闪存和串行NAND闪存接口。
特性：
Single，dual或quad SPI闪存
dual-flash模式，允许将两个闪存聚合为虚拟单个闪存
双数据速率和内存映射模式。
| Domain | Peripheral | Runtime allocation | Comment | |||
| Instance | Cortex-A7 secure (OP-TEE) | Cortex-A7 non-secure (Linux) | Cortex-M4 (STM32Cube) | |||
| Mass storage | QUADSPI | QUADSPI | ☐ | ☐ | Assignment (single choice) |
A7使用QSPI
&qspi {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&qspi_clk_pins_a &qspi_bk1_pins_a>;
pinctrl-1 = <&qspi_clk_sleep_pins_a &qspi_bk1_sleep_pins_a>;
reg = <0x58003000 0x1000>, <0x70000000 0x4000000>;
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
flash0: mx25l25635f@0 {
compatible = "jedec,spi-nor";
reg = <0>;
spi-rx-bus-width = <4>;
spi-max-frequency = <108000000>;
#address-cells = <1>;
#size-cells = <1>;
};
};CM4使用QSPI
&qspi {
status = "disabled";
};
&m4_qspi {
pinctrl-names = "rproc_default";
pinctrl-0 = <&qspi_clk_pins_a &qspi_bk1_pins_a &qspi_bk2_pins_a>;
status = "okay";
};作者：SteveChen 创建时间：2024-09-18 14:43
最后编辑：SteveChen 更新时间：2024-09-18 14:44
最后编辑：SteveChen 更新时间：2024-09-18 14:44
