WiFi接口（1）——模块适配（AW-CM358）

最新推荐文章于 2025-06-14 20:12:31 发布

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最新推荐文章于 2025-06-14 20:12:31 发布

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分类专栏： RK3399 Linux 网络文章标签： linux 嵌入式蓝牙 wifi

本文链接：https://blog.youkuaiyun.com/scottmvp/article/details/119252035

本文介绍了如何在RK3399平台上适配AW-CM358SM模块，包括802.11ac/n/a/g/b兼容的WiFi和蓝牙5.2功能。详细讲解了内核配置、sdio总线设置、模块加载与固件安装，以及WiFi和蓝牙功能的验证过程，涉及WFD规范和HCI_UART驱动。

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RK3399适配海华的AW-CM358SM模块（2.4G/5G WiFi,蓝牙5.0）以替代AP6256。
该模块的部分特性：

WIFI:
Backward compatibility with legacy 802.11 ac/ n/a/g/b technology.
Bluetooth:
Fully qualified Bluetooth BT4.2 and support Bluetooth 5.

内核配置

kernel/arch/arm64/boot/dts/rockchip/OK3399-C.dts
kernel/arch/arm64/configs/rockchip_linux_defconfig
kernel/drivers/net/wireless/rockchip_wlan/Kconfig
kernel/drivers/net/wireless/rockchip_wlan/Makefile

kernel/drivers/net/wireless/rockchip_wlan/wlan_src/
kernel/drivers/net/wireless/rockchip_wlan/muart_src/

设备树sdio总线的配置：

        sdio_pwrseq: sdio-pwrseq {
                compatible = "mmc-pwrseq-simple";
                clocks = <&ap6256_lpo_clk>;
                clock-names = "ext_clock";
                pinctrl-names = "default";
                pinctrl-0 = <&wifi_enable_h>;

                /*
                 * On the module itself this is one of these (depending
                 * on the actual card populated):
                 * - SDIO_RESET_L_WL_REG_ON
                 * - PDN (power down when low)
                 */
                reset-gpios = <&gpio4 RK_PD1 GPIO_ACTIVE_LOW>;
        };

&sdio0 {
        clock-frequency = <50000000>;
        clock-freq-min-max = <200000 50000000>;
        supports-sdio;
        bus-width = <4>;
        disable-wp;
        cap-sd-highspeed;
        cap-sdio-irq;
        keep-power-in-suspend;
        mmc-pwrseq = <&sdio_pwrseq>;
        non-removable;
        num-slots = <1>;
        pinctrl-names = "def