iMX8M enable two QSPI

[charleshuang]

Hi,

I want to know how to enable two qspi

My setting as below

&qspi {

        pinctrl-names = "default";

        pinctrl-0 = <&pinctrl_qspi>;

        status = "okay";

        flash0: n25q256a@0 {

                reg = <0>;

                #address-cells = <1>;

                #size-cells = <1>;

                compatible = "micron,n25q256a";

                spi-max-frequency = <29000000>;

                spi-nor,ddr-quad-read-dummy = <6>;

        };

        flash1: n25q256a@1 {

                reg = <1>;

                #address-cells = <1>;

                #size-cells = <1>;

                compatible = "micron,n25q256a";

                spi-max-frequency = <29000000>;

                spi-nor,ddr-quad-read-dummy = <6>;

        };

};

                pinctrl_qspi: qspigrp {

                        fsl,pins = <

                                MX8MQ_IOMUXC_NAND_ALE_QSPI_A_SCLK       0x82

                                MX8MQ_IOMUXC_NAND_CE0_B_QSPI_A_SS0_B    0x82

                                MX8MQ_IOMUXC_NAND_DATA00_QSPI_A_DATA0   0x82

                                MX8MQ_IOMUXC_NAND_DATA01_QSPI_A_DATA1   0x82

                                MX8MQ_IOMUXC_NAND_DATA02_QSPI_A_DATA2   0x82

                                MX8MQ_IOMUXC_NAND_DATA03_QSPI_A_DATA3   0x82

                                MX8MQ_IOMUXC_NAND_CLE_QSPI_B_SCLK       0x82

                                MX8MQ_IOMUXC_NAND_CE2_B_QSPI_B_SS0_B    0x82

                                MX8MQ_IOMUXC_NAND_DATA04_QSPI_B_DATA0   0x82

                                MX8MQ_IOMUXC_NAND_DATA05_QSPI_B_DATA1   0x82

                                MX8MQ_IOMUXC_NAND_DATA06_QSPI_B_DATA2   0x82

                                MX8MQ_IOMUXC_NAND_DATA07_QSPI_B_DATA3   0x82

                        >;

                };

but it's not working, and it will hang system and kernel panic message
The attached is the dmesg

[igorpadykov]

Hi charles

for two qspi one can look at below example:

linux/arch/arm64/boot/dts/freescale/fsl-imx8mq-ddr3l-arm2.dts

fsl-imx8mq-ddr3l-arm2.dts\freescale\dts\boot\arm64\arch - linux-imx - i.MX Linux kernel 

and description in sect.3.5 Quad Serial Peripheral Interface (QuadSPI) attached Linux Manual.

Best regards
igor
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