QSPI NAND Flash driver question

[deyro]

Hello,

I am looking to interface a 2Gb NAND Flash MT29F02G01ABAGB with a STM32G473 processor. Previous we had a 256Gb NOR flash (MT25QL256) on the board which I was able to use with the flash_stm32_qspi.c driver and st,stm32-qspi-nor binding.

I tried using the same driver for the NAND flash but got the below error:
[00000000] <err> flash_stm32_qspi: SFDP magic 00000000 invalid

I debugged and found this section of the code fails in flash_stm32_qspi.c function flash_stm32_qspi_init

	uint32_t magic = jesd216_sfdp_magic(hp);

	if (magic != JESD216_SFDP_MAGIC) {
		LOG_ERR("SFDP magic %08x invalid", magic);
		return -EINVAL;
	}

My dtsi looks like this:

&quadspi {
    status = "okay";
    pinctrl-0 = <&quadspi_clk_pe10 &quadspi_bk1_ncs_pe11
                 &quadspi_bk1_io0_pe12 &quadspi_bk1_io1_pe13
                 &quadspi_bk1_io2_pe14 &quadspi_bk1_io3_pe15>;
    pinctrl-names = "default";
                   
	dmas = <&dmamux1 15 40 0x0000>;
	dma-names = "tx_rx";
	
	mt29f2g01abagdwb: mt29f2g01abagdwb@0 {
		compatible = "st,stm32-qspi-nor";
        label = "MT29F2G01ABAGDWB";
        reg = <0>;
        qspi-max-frequency = <170000000>;
        size = <DT_SIZE_M(250*8)>;
        /*jedec-id = [20 BA 19];*/
        spi-bus-width = <4>;
        status = "okay";
        
		partitions {
			compatible = "fixed-partitions";
			#address-cells = <1>;
			#size-cells = <1>;
			
			settings_partition: partition@0 {
				label = "test";
				reg = <0x00000000 DT_SIZE_M(4)>;
			};

			data_partition: partition@100000 {
				label = "data";
				reg = <0x00400000 DT_SIZE_M(246)>;
			};
		};
	};
};

My question is should the same driver work with the NAND flash? I did not find any NAND flash driver in zephyr.
I do not have much knowledge / experience with flash memories. How can I make this work?

Zephyr version 2.7.99
Host: Ubuntu 18
Hardware: Custom board with STM32G473QET

Thanks

[deyro]

Any help on this is highly appreciated.

[deyro]

Is there any plans for supporting NAND flash any time soon?

[sslupsky]

@deyro Are you still looking for something?

There is a PR for a driver that has not been merged: #50690

I wrote an SPI NAND driver for a Kioxia part (TC58CVG2S0HxAIx ). It is not complete as I did not get around to implementing the ECC. I got it working with LittleFS and determined LittleFS has some issues with NAND that have not been resolved. Not sure if it would work in your situation.

[deyro]

@sslupsky thanks, I will follow the PR #50690 for updates.