Problem with 64GB SDXC card on i.MX7D based board

[mischo5500]

Hi,

we are using "Kingston Canvas Select Plus microSDHC 32GB" SD cards on our custom i.MX7D based boards running 5.15.52 version Linux and it works correctly.

However, when I try "Kingston Canvas Select Plus microSDXC 64GB" SD card, I'm getting error in kernel:

mmc1: error -84 whilst initialising SD card

Source of error is sdhci_cmd_irq() function, which is fired with SDHCI_INT_END_BIT or  SDHCI_INT_INDEX interrupts randomly.

My devicetree:

&usdhc2 {
	pinctrl-names = "default", "state_100mhz", "state_200mhz";
	pinctrl-0 = <&pinctrl_usdhc2>;
	pinctrl-1 = <&pinctrl_usdhc2_100mhz>;
	pinctrl-2 = <&pinctrl_usdhc2_200mhz>;
	wakeup-source;
	enable-sdio-wakeup;
	keep-power-in-suspend;
	status = "okay";
};

pinctrl_usdhc2: usdhc2grp {
			fsl,pins = <
				MX7D_PAD_SD2_CMD__SD2_CMD			0x59
				MX7D_PAD_SD2_CLK__SD2_CLK			0x19
				MX7D_PAD_SD2_DATA0__SD2_DATA0		0x59
				MX7D_PAD_SD2_DATA1__SD2_DATA1		0x59
				MX7D_PAD_SD2_DATA2__SD2_DATA2		0x59
				MX7D_PAD_SD2_DATA3__SD2_DATA3		0x59
				MX7D_PAD_SD2_CD_B__SD2_CD_B			0x59
				MX7D_PAD_SD2_RESET_B__SD2_RESET_B	0x59
			>;
		};

		pinctrl_usdhc2_100mhz: pinctrl_usdhc2_100mhz {
			fsl,pins = <
				MX7D_PAD_SD2_CMD__SD2_CMD			0x5a
				MX7D_PAD_SD2_CLK__SD2_CLK			0x1a
				MX7D_PAD_SD2_DATA0__SD2_DATA0		0x5a
				MX7D_PAD_SD2_DATA1__SD2_DATA1		0x5a
				MX7D_PAD_SD2_DATA2__SD2_DATA2		0x5a
				MX7D_PAD_SD2_DATA3__SD2_DATA3		0x5a
				MX7D_PAD_SD2_CD_B__SD2_CD_B			0x5a
				MX7D_PAD_SD2_RESET_B__SD2_RESET_B	0x5a
			>;
		};

		pinctrl_usdhc2_200mhz: pinctrl_usdhc2_200mhz {
			fsl,pins = <
				MX7D_PAD_SD2_CMD__SD2_CMD			0x5b
				MX7D_PAD_SD2_CLK__SD2_CLK			0x1b
				MX7D_PAD_SD2_DATA0__SD2_DATA0		0x5b
				MX7D_PAD_SD2_DATA1__SD2_DATA1		0x5b
				MX7D_PAD_SD2_DATA2__SD2_DATA2		0x5b
				MX7D_PAD_SD2_DATA3__SD2_DATA3		0x5b
				MX7D_PAD_SD2_CD_B__SD2_CD_B			0x5b
				MX7D_PAD_SD2_RESET_B__SD2_RESET_B	0x5b
			>;
		};

Card detect is pulled down and write protect is floating.

Our card reset is probably not working, but I don't know, if it could cause problems like this.

Any idea, what can be causing problems?

Thanks in advance,

Michal

[Bio_TICFSL]

Hello

In case of MX7 it does not support SDA 3.0. that is in SDXC that why your are receiving this error.

Regards

[mischo5500]

Hi @Bio_TICFSL,

It means, that i.MX7 does not support SDXC cards at all, or only this specific one?

Looking to reference manual it should support SDXC and UHS-I.

Thanks,

Michal