集成RTL8822CS WIFI模块（sdio3.0）切换1.8V电压失败

• qiubin2012

  Posts: 3

  Joined: 2024-02-25 9:44

  2024-06-24 9:33

  RV1106 Luckfox Pico Pro/Max开发板我通过sdio接口连接RTL8822CS WIFI模块，WIFI模块已经可以正常使用。但我希望使用sdio3.0 更高速度来驱动wifi模块，从日志看CMD11命令失败了（切换1.8V电压失败）
  1、我将RTL8822CS模块的VDDIO从3.3V供电改为1.8V
  2、修改设备树
  =======设备树
  /***********mmc interface for wifi map to sdmmc1 set for sdio mode**********/
  &sdio {
  max-frequency = <100000000>;
  bus-width = <4>;
  no-sd;
  no-mmc;
  cap-sd-highspeed;
  cap-sdio-irq;
  keep-power-in-suspend;
  non-removable;
  sd-uhs-sdr104; // 启用SDR104模式以支持更高的频率
  //sd-uhs-ddr50; // 启用DDR50模式
  //sd-uhs-sdr50; // 保留SDR50模式
  supports-sdio;
  pinctrl-names = "default";
  pinctrl-0 = <&sdmmc1m0_clk &sdmmc1m0_cmd &sdmmc1m0_bus4>;
  vqmmc-supply = <&vcc_1v8>; // 确保1.8V电源供应
  status = "okay";
  };
  =======rv1106 sdio引脚
  rv1106引脚名称 rv1106引脚序号
  SDMMC1_CLK_M0 26
  SDMMC1_D0 25
  SDMMC1_D1 24
  SDMMC1_D2 22
  SDMMC1_D3 21
  =======启动日志错误关键行
  [ 0.228322] dwmmc_rockchip ff9a0000.mmc: card claims to support voltages below defined range
  [ 0.748472] dwmmc_rockchip ff9a0000.mmc: Unexpected CMD11 timeout
  [ 0.748530] mmc_host mmc2: Timeout sending command (cmd 0x10202000 arg 0x0 status 0x90202000)
  =======
  # dmesg | grep mmc
  [ 0.198992] dwmmc_rockchip ff9a0000.mmc: IDMAC supports 32-bit address mode.
  [ 0.199047] dwmmc_rockchip ff9a0000.mmc: Using internal DMA controller.
  [ 0.199065] dwmmc_rockchip ff9a0000.mmc: Version ID is 270a
  [ 0.199109] dwmmc_rockchip ff9a0000.mmc: DW MMC controller at irq 39,32 bit host data width,256 deep fifo
  [ 0.199237] mmc_host mmc2: card is non-removable.
  [ 0.201740] dwmmc_rockchip ffaa0000.mmc: IDMAC supports 32-bit address mode.
  [ 0.201816] dwmmc_rockchip ffaa0000.mmc: Using internal DMA controller.
  [ 0.201835] dwmmc_rockchip ffaa0000.mmc: Version ID is 270a
  [ 0.201882] dwmmc_rockchip ffaa0000.mmc: DW MMC controller at irq 51,32 bit host data width,256 deep fifo
  [ 0.211885] mmc_host mmc2: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
  [ 0.212302] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)
  [ 0.228322] dwmmc_rockchip ff9a0000.mmc: card claims to support voltages below defined range
  [ 0.748472] dwmmc_rockchip ff9a0000.mmc: Unexpected CMD11 timeout
  [ 0.748530] mmc_host mmc2: Timeout sending command (cmd 0x10202000 arg 0x0 status 0x90202000)
  [ 0.806395] mmc_host mmc2: Bus speed (slot 0) = 49500000Hz (slot req 50000000Hz, actual 49500000HZ div = 0)
  [ 0.807082] mmc2: new high speed SDIO card at address 0001

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