BP-CC3351: am6254和cc3351之间使用SDIO(mmc2)接线，电平异常

您好，

请问外接3.3V是如何接的？在哪里应用它？是外部来源吗？

请问能否提供完整的器件树文件和电路板原理图？

电路如下,请问会有什么影响吗？

您好，

Alice said:

请问能否提供完整的器件树文件和电路板原理图？

请提供器件树文件。

以下是相关设备树节点信息

wlan_en: regulator-3 {
/* OUTPUT of SN74AVC2T244DQMR */
compatible = "regulator-fixed";
regulator-name = "wlan_en";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
enable-active-high;
regulator-always-on;
vin-supply = <&vdd_3v3>;
gpio = <&main_gpio0 38 GPIO_ACTIVE_HIGH>;
pinctrl-names = "default";
pinctrl-0 = <&wifi_en_pins_default>;
};

wifi_pins_default: wifi-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x0120, PIN_INPUT, 0) /* (C24) MMC2_CMD */
AM62X_IOPAD(0x0118, PIN_INPUT, 0) /* (D25) MMC2_CLK */
AM62X_IOPAD(0x0114, PIN_INPUT, 0) /* (B24) MMC2_DAT0 */
AM62X_IOPAD(0x0110, PIN_INPUT, 0) /* (C25) MMC2_DAT1 */
AM62X_IOPAD(0x010c, PIN_INPUT, 0) /* (E23) MMC2_DAT2 */
AM62X_IOPAD(0x0108, PIN_INPUT, 0) /* (D24) MMC2_DAT3 */
>;
};

wifi_en_pins_default: wifi-en-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x009C, PIN_OUTPUT, 7) /* MMC2_SDCD (V25)GPMC0_WAIT1.GPIO0_38 */
>;
};

main_wlirq_pins_default: main-wlirq-pins-default {
pinctrl-single,pins = <
AM62X_IOPAD(0x00A8, PIN_OUTPUT, 7) /* MMC2_SDWP (M21)GPMC0_CSn0.GPIO0_41 */
>;
};

&sdhci2 {
status = "okay";
vmmc-supply = <&wlan_en>;
pinctrl-names = "default";
pinctrl-0 = <&wifi_pins_default>;
non-removable;
ti,fails-without-test-cd;
cap-power-off-card;
keep-power-in-suspend;
ti,driver-strength-ohm = <50>;
assigned-clocks = <&k3_clks 157 158>;
assigned-clock-parents = <&k3_clks 157 160>;
#address-cells = <1>;
#size-cells = <0>;

wlcore: wlcore@2 {
compatible = "ti,cc33xx";
reg = <2>;
pinctrl-names = "default";
pinctrl-0 = <&main_wlirq_pins_default>;
interrupt-parent = <&main_gpio0>;
interrupts = <41 IRQ_TYPE_EDGE_FALLING>;
};
// TI-BLE-SDIO interface
btti: btti@1 {
compatible = "ti,cc33xxbt";
reg = <1>;
};
};