interfacing MT29F4G01ABAFDWB nand flash.

[tejasVyas]

i have to interface MT29F4G01ABAFDWB in zephyr rtos but i need help how create overlay file for it(i want to interface it using spi), i already have bare metal drivers for mt29f4g01abafdwb now those i have to move it to zephyr.
i'm using zephyr 2.6
and my controller is nrf52840dk board

[AHaug]

Hi,

https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/ and https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/ both contain lessons for how to set up overlays for custom boards and SPI.

I recommend that you specifically go through

1. Lesson 2: https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/lessons/lesson-2-reading-buttons-and-controlling-leds/ 
2. Lesson 3: https://academy.nordicsemi.com/courses/nrf-connect-sdk-fundamentals/lessons/lesson-3-elements-of-an-nrf-connect-sdk-application/ 
3. Lesson 3 in Intermediate: https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-3-adding-custom-board-support/ 
4. Lesson 4 in Intermediate: https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-5-serial-peripheral-interface-spi/ 

Kind regards,
Andreas

[tejasVyas]

hi there,

&spi1 {
    status = "okay";
    cs-gpios = <&gpio0 4 GPIO_ACTIVE_LOW>;
    pinctrl-0 = <&spi1_default>;
    pinctrl-1 = <&spi1_sleep>;
    pinctrl-names = "default", "sleep";

    mt29f4g: mt29f4g@0 {
        compatible = "spi-device"; 
        reg = <0>; 
        spi-max-frequency = <8000000>; 

       
    };
};

&pinctrl {
    spi1_default: spi1_default {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 1, 15)>,
                    <NRF_PSEL(SPIM_MISO, 1, 14)>,
                    <NRF_PSEL(SPIM_MOSI, 1, 13)>;
        };
    };

    spi1_sleep: spi1_sleep {
        group1 {
            psels = <NRF_PSEL(SPIM_SCK, 1, 15)>,
                    <NRF_PSEL(SPIM_MISO, 1, 14)>,
                    <NRF_PSEL(SPIM_MOSI, 1, 13)>;
            low-power-enable;
        };
    };
};

this is the overlay i have created.can please review it once , because im getting this error

/home/dnk202/nordic/tejas/mt29f4g_external_flash/p1/build/zephyr/include/generated/devicetree_generated.h:14861:32: error: 'DT_N_S_soc_S_spi_40004000_S_mt29f4g_0_P_spi_max_frequency' undeclared here (not in a function); did you mean 'DT_N_S_soc_S_spi_40004000_S_mt29f4g_0_P_reg_IDX_0_EXISTS'?
14861 | #define DT_N_NODELABEL_mt29f4g DT_N_S_soc_S_spi_40004000_S_mt29f4g_0
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/devicetree.h:4343:29: note: in definition of macro 'DT_CAT3'
4343 | #define DT_CAT3(a1, a2, a3) a1 ## a2 ## a3
| ^~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/drivers/spi.h:332:30: note: in expansion of macro 'DT_PROP'
332 | .frequency = DT_PROP(node_id, spi_max_frequency), \
| ^~~~~~~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/drivers/spi.h:389:27: note: in expansion of macro 'SPI_CONFIG_DT'
389 | .config = SPI_CONFIG_DT(node_id, operation_, delay_) \
| ^~~~~~~~~~~~~
/home/dnk202/nordic/tejas/mt29f4g_external_flash/p1/src/main.c:20:30: note: in expansion of macro 'SPI_DT_SPEC_GET'
20 | struct spi_dt_spec spispec = SPI_DT_SPEC_GET(DT_NODELABEL(mt29f4g), SPIOP, 0);
| ^~~~~~~~~~~~~~~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/devicetree.h:4341:24: note: in expansion of macro 'DT_N_NODELABEL_mt29f4g'
4341 | #define DT_CAT(a1, a2) a1 ## a2
| ^~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/devicetree.h:198:29: note: in expansion of macro 'DT_CAT'
198 | #define DT_NODELABEL(label) DT_CAT(DT_N_NODELABEL_, label)
| ^~~~~~
/home/dnk202/nordic/tejas/mt29f4g_external_flash/p1/src/main.c:20:46: note: in expansion of macro 'DT_NODELABEL'
20 | struct spi_dt_spec spispec = SPI_DT_SPEC_GET(DT_NODELABEL(mt29f4g), SPIOP, 0);
| ^~~~~~~~~~~~
/home/dnk202/nordic/tejas/mt29f4g_external_flash/p1/build/zephyr/include/generated/devicetree_generated.h:14861:32: error: 'DT_N_S_soc_S_spi_40004000_S_mt29f4g_0_P_duplex' undeclared here (not in a function); did you mean 'DT_N_S_soc_S_spi_40004000_S_mt29f4g_0_P_reg'?
14861 | #define DT_N_NODELABEL_mt29f4g DT_N_S_soc_S_spi_40004000_S_mt29f4g_0
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/devicetree.h:4343:29: note: in definition of macro 'DT_CAT3'
4343 | #define DT_CAT3(a1, a2, a3) a1 ## a2 ## a3
| ^~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/drivers/spi.h:334:25: note: in expansion of macro 'DT_PROP'
334 | DT_PROP(node_id, duplex) | \
| ^~~~~~~
/home/dnk202/ncs/v2.6.0/zephyr/include/zephyr/drivers/spi.h:389:27: note: in expansion of macro 'SPI_CONFIG_DT'
389 | .config = SPI_CONFIG_DT(node_id, operation_, delay_) \

[AHaug]

Do you have your device set up in a device binding?

Please refer to https://academy.nordicsemi.com/courses/nrf-connect-sdk-intermediate/lessons/lesson-2-debugging/topic/troubleshooting-the-devicetree/ and https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/build/dts/howtos.html#devicetree-howtos for troubleshooting of the dts.

Kind regards,
Andreas