SDIO for ESPRESSIF on RZG2L

Question

Hi everyone,

I would need to use the SDIO peripheral on the pins listed below to drive the ESP32 module:

I'm using a Yocto Dunfell system and in the device tree I set the device like this:

&sdhi1 {
pinctrl-0 = <&sdhi1_pins>;
pinctrl-names = "default";
no-1-8-v;
broken-cd;
vmmc-supply = <&reg_3p3v>;
bus-width = <4>;
status = "okay";
};

where sdhi1_pins are:

sdhi1_pins: sd1 {
sd1_data {
pins = "SD1_DATA0", "SD1_DATA1", "SD1_DATA2", "SD1_DATA3";
power-source = <3300>;
};

sd1_ctrl {
pins = "SD1_CLK", "SD1_CMD";
power-source = <3300>;
};

sd1_mux {
pinmux = <RZG2L_PORT_PINMUX(19, 0, 1)>; /* SD1_CD */
};
};

but when I launch the system I don't see the SDIO device in /dev/, I thought I could do a test with the command echo "test" > SDIO1 and see if anything came out on the SDIO data line. Is this feasible?

Thank you.

PT_Renesas · Answer

Hi Andedo,
Do you have the RZ/G2L EVK or a custom board?
The RZ/G2L EVK use that pins for the SD card. You need to set the DIP switches accordingly to enable these pins.
Do you use the eMMC for booting?
Can you see any messages in the dmesg for sdhi?
Kind Regards.