Hi everyone,
hoped someone out there could help. Im trying get my SDIO WIFI running at usdhc2 , but while enabling
the usdhc2 , the boot stop at "Waiting for root device /dev/mmcblk0p2...".
I have no idea what the relation between "dev/mmcblk0p2" and usdhc2 .
"dev/mmcblk0p2" is from MMC1 at node usdhc1, why would inserting status = "okay"; at usdhc2 would cause Waiting for root device /dev/mmcblk0p2...".
The board boot up perfectly if" usdhc2 is status = "disabled" .
Current platform:
Yocto NXP i.MX Release Distro 5.4-zeus imx8mqevk ttymxc0.
Hardware custom board:
Soc: IMX8mq
main boot fuse to : MMC1 usdhc1
** usdhc2 sd regulator has no dedicated reset gpio like the imx8mq evk board. 3.3 power are feed at fixed power on.
Devicetree:
&usdhc1 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc1>;
pinctrl-1 = <&pinctrl_usdhc1_100mhz>;
pinctrl-2 = <&pinctrl_usdhc1_200mhz>;
vqmmc-supply = <&sw4_reg>;
bus-width = <8>;
non-removable;
no-sd;
no-sdio;
status = "okay";
};
&usdhc2 {
#address-cells = <1>;
#size-cells = <0>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc2_wifi>;
bus-width = <4>;
non-removable;
no-mmc;
no-sd;
/delete-property/ cd-gpios;
pm-ignore-notify;
keep-power-in-suspend;
non-removable;
cap-power-off-card;
status = "okay";
wilc_sdio: wifi@0 {
reg = <0>;
compatible = "microchip,wilc1000", "microchip,wilc3000";
irq-gpios = <&gpio2 12 0>;
reset-gpios = <&gpio2 19 0>;
chip_en-gpios = <&gpio1 4 0>;
status = "okay";
};
};
Thanks
Nidaru
