We made new design base on BBAI-64, for SD we use 3.3V at all, no switching 1.8V, no “TLV71033”
The boot seems well, but stuck at:
“Waiting for root device /dev/mmcblk1p2…”
We changed device tree to prevent switching to 1.8V
&vdd_sd_dv_alt {
status = "disabled";
};
&main_sdhci1 {
/* SD/MMC */
vmmc-supply = <&vdd_mmc1>;
vqmmc-supply = <>;
pinctrl-names = "default";
pinctrl-0 = <&main_mmc1_pins_default>;
ti,driver-strength-ohm = <50>;
disable-wp;
no-1-8-v;
keep-power-in-suspend;
bus-width = <4>;
status = "okay";
};
still doesn’t help,
many thank