TDA2SX: Need Your inputs regarding how to flash an image to SNOR flash(mx25u12835f)

Hi,

Are you using the vision SDK?

Thanks

Gaviraju

Hi Gaviraju,

Yes i am using vision SDK 03.04.

Thanks & Regards,

A.Kavya Harini

Hi Gaviraju,

I have read those documents before,Now in my custom board i am using mx25u12835f SNOR chip which is connected via spi2 interface.

I have added the compatibility in dts,m25p80 driver &spi-nor framework too.

DTS info:

&mcspi2 {
        status = "okay";
        m25p80@0 {
        compatible = "mx25u12835f", "jedec,spi-nor";
        spi-max-frequency = <104000000>;
        reg = <0>;
        #address-cells = <1>;
        #size-cells = <1>;
        };
};

In m25p80 driver:

static const struct spi_device_id m25p_ids[] = {

Added the chip name in the above structure.

In spi-nor framework:

static const struct flash_info spi_nor_ids[] = {

added the chip info as below

{ "mx25u12835f", INFO(0xc22538, 0, 64 * 1024, 256, SECT_4K | SPI_NOR_DUAL_READ | SPI_NOR_QUAD_READ) }

Now I am facing an issue that in chip is not detecting & jedec id is giving as 00,0,0 in kernel prints.Please go through the log once.

[    1.846692] Adding alias for supply VDD1_CP,(null) -> VDD1_CP,spi1.0
[    1.853979] m25p80 spi2.0: unrecognized JEDEC id bytes: 00,  0,  0
[    1.861311] libphy: Fixed MDIO Bus: probed

Please tell me, I need to configure any thing to solve this issue.

Thanks & Regards,

A.Kavya Harini

Hi,

Can you check basic things like pinmux is correct? The clock is coming? etc

Thanks

Gaviraju

Hi Gaviraju,

Today I checked the clock,yes it's not coming.

I don't know whether it is a hardware issue or software issue.

I want to know that the dts info & remaining info which I posted earlier is correct?

Here is the below pinmux settings done in u-boot

{SPI2_SCLK, (M0 | PIN_INPUT_PULLDOWN)}, /* spi2_sclk.spi2_sck */
        {SPI2_D1, (M0 | PIN_INPUT_SLEW)},       /* spi2_d1.spi2_mosi */
        {SPI2_D0, (M0 | PIN_INPUT_SLEW)},       /* spi2_d0.spi2_miso */
        {SPI2_CS0, (M0 | PIN_INPUT_PULLUP | SLEWCONTROL)},      /* spi2_cs0.spi2_cs0n */

Could you please tell me,whether these settings are correct or not?

So that I can ask my hardware team to check at hardware side.

Thanks & Regards,

A.Kavya Harini.

Hi,

Can you share the Git diff of the kernel code and DT Schematics of How the flash is interfaced with SoC with ball numbers of the SPI pins code that is adding pinmux in u-boot?

Thanks

Gaviraju