How to implement sspi command in uboot in Arria10 SoC Devkit

I solved myself.

The problem was resetting "Per-Master Security bit for spi_master1: 0xFFD13020".

It was necessary to add "resets = <& rst SPIM1_RESET>;" to uboot DTS.

​

The changes are as follows.

​

[Configure uboot]

CONFIG_CMD_SPI=y
CONFIG_DEFAULT_SPI_BUS=0
CONFIG_DEFAULT_SPI_MODE=0
 
CONFIG_DESIGNWARE_SPI=y

[Device Tree]

<< socfpga_arria10.dtsi >>

		spi1: spi@ffda5000 {
			compatible = "snps,dw-apb-ssi";
			#address-cells = <1>;
			#size-cells = <0>;
			reg = <0xffda5000 0x100>;
			interrupts = <0 102 4>;
			num-chipselect = <4>;
			bus-num = <0>;
			/*32bit_access;*/
			tx-dma-channel = <&pdma 16>;
			rx-dma-channel = <&pdma 17>;
			resets = <&rst SPIM1_RESET>;	/* ADD */
			clocks = <&spi_m_clk>;
			status = "okay";
 
			spidev@0 {						/* ADD---> */
				compatible = "rohm,dh2228fv";
				reg = <0x0>;
				spi-max-frequency = <100000>;
			};								/* <---ADD */
		};

<< socfpga_arria10_socdk.dtsi >>

	aliases {
		ethernet0 = &gmac0;
		serial0 = &uart1;
		i2c0 = &i2c1;
		spi0 = &spi1;	/* ADD */
	};

However, while Read seems to work fine, Write does not seem to work properly.

​

>> sspi 0:0 16 02C0 --->LED control is not performed correctly.

>> sspi 0:0 16 0500 ---> The status of DipSW and Push Button can be read correctly.

​

Thanks!​