SDIO device

chengxinyu — Wed, 15 Jan 2025 08:52:07 GMT

我现在想测试 SDIO 控制器的设备模式，但我没有该设备的驱动程序代码。您能否提供设备模式的驱动程序代码

Re: SDIO device

Manuel_Salas — Thu, 16 Jan 2025 05:30:31 GMT

I hope you are doing very well.

I am not sure what processor you are using or BSP version, but you can refer to this segment of the Device tree (in this case for i.MX8MP):

&usdhc2 { assigned-clocks = <&clk IMX8MP_CLK_USDHC2>; assigned-clock-rates = <400000000>; pinctrl-names = "default", "state_100mhz", "state_200mhz"; pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_usdhc2_gpio>; pinctrl-1 = <&pinctrl_usdhc2_100mhz>, <&pinctrl_usdhc2_gpio>; pinctrl-2 = <&pinctrl_usdhc2_200mhz>, <&pinctrl_usdhc2_gpio>; cd-gpios = <&gpio2 12 GPIO_ACTIVE_LOW>; vmmc-supply = <&reg_usdhc2_vmmc>; bus-width = <4>; status = "okay"; }; &usdhc3 { assigned-clocks = <&clk IMX8MP_CLK_USDHC3>; assigned-clock-rates = <400000000>; pinctrl-names = "default", "state_100mhz", "state_200mhz"; pinctrl-0 = <&pinctrl_usdhc3>; pinctrl-1 = <&pinctrl_usdhc3_100mhz>; pinctrl-2 = <&pinctrl_usdhc3_200mhz>; bus-width = <8>; non-removable; status = "okay"; };

There you can configure your USDHC interfaces.

I hope this can helps to you.

Best regards,

Salas.

Re: SDIO device

chengxinyu — Thu, 16 Jan 2025 06:19:19 GMT

您好，我使用的是RISC-V处理器，使用的是FreeRTOS实时操作系统。我想讨要一份SDIO控制器的device模式的驱动代码。

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