[参考译文] J722SXH01EVM：device-tree：如何指定&#39；MCU_spi0的 DMA μ`属性(用于从 A53端访问)、请？

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1519680/j722sxh01evm-device-tree-what-to-specify-dmas-property-for-mcu_spi0-for-access-from-a53-side-please

工具/软件：

你好 e2e！

我从 A53端访问 mcu_spi0。 到目前为止、设置在 PIO 模式下可以正常运行、但在 DMA 模式下无法成功运行。

我应该把什么属性`dmas =`,`dma-names =`条目? `pktdma`仅适用于 main_spi0、1、2而不适用于 MCU_spi0、1可能是？  

任何提示都很感谢！

&mcu_pmx0 {
        mcu_spi0_pins_default: mcu-spi0-pins-default {
                // A9 MCU_SPI0_CLK IO SPI Clock
                // C12 MCU_SPI0_CS0 IO SPI Chip Select 0
                // A10 MCU_SPI0_CS2 IO SPI Chip Select 2
                // B12 MCU_SPI0_D0 IO SPI Data 0
                // C11 MCU_SPI0_D1 IO SPI Data 1
                pinctrl-single,pins = <
                        J722S_MCU_IOPAD(0x0008, PIN_INPUT, 0) /* (A9) MCU_SPI0_CLK IO SPI Clock */
                        J722S_MCU_IOPAD(0x000c, PIN_INPUT, 0) /* (B12) MCU_SPI0_D0 IO SPI Data 0 */
                        J722S_MCU_IOPAD(0x0010, PIN_INPUT, 0) /* (C11) MCU_SPI0_D1 IO SPI Data 1 */
                        J722S_MCU_IOPAD(0x0000, PIN_INPUT, 0) /* (C12) MCU_SPI0_CS0 IO SPI Chip Select 0 */
                >;
        };
};

&mcu_spi0 {
        status = "okay";
        #address-cells = <1>;
        #size-cells = <0>;
        pinctrl-0 = <&mcu_spi0_pins_default>;
        pinctrl-names = "default";
        /* dmas, dma-names below won't work */
//      dmas = <&main_pktdma 0xc300 0>, <&main_pktdma 0x4300 0>;
//      dma-names = "tx0", "rx0";
        spidev@0 {
                 spi-max-frequency = <24000000>;
                 reg = <0>;
                 compatible = "rohm,dh2228fv";
        };
};