调试sdio wifi rtl8822cs，识别不了sdio卡

[复制链接] · 发表于 2020-3-27 09:55:31

SDIO控制器的供电为1.8V，所以模组的IO电平也给1.8V。修改dts，对应的脚位也复用成sdio功能。
飞线出来调试，示波器观看时钟信号正常，编译驱动加进内核，正常开机未能识别sdio设备。可能是dts或者硬件脚位问题？可以帮忙看一下吗

[   11.857454] mmc1: error -16 whilst initialising SDIO card

[   12.358375] dwmmc_rockchip fe310000.dwmmc: Busy; trying anyway

[   12.358926] mmc_host mmc1: Timeout sending command (cmd 0x202000 arg 0x0 status 0x0)

[   12.373470] mmc_host mmc1: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)

复制代码

sdio_pwrseq: sdio-pwrseq {
compatible = "mmc-pwrseq-simple";
clocks = <&rk809 1>;
clock-names = "ext_clock";

status = "okay";
};
wireless-wlan {
compatible = "wlan-platdata";
rockchip,grf = <&grf>;
wifi_chip_type = "rtl8822cs";
sdio_vref = <1800>;
status = "okay";
};

只看该作者 · 发表于 2020-3-27 09:56:31

[    3.865965] ======== PULL WL_REG_ON(-1) HIGH! ========

[    3.865968] [WLAN_RFKILL]: rockchip_wifi_power: 1

[    3.865972] [BT_RFKILL]: rfkill_get_bt_power_state: rfkill-bt driver has not Successful initialized

[    3.865975] [WLAN_RFKILL]: wifi turn on power. -1

[    3.879482] mmc_host mmc2: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)

[    3.918940] =======================================================

[    3.922133] ==== Launching Wi-Fi driver! (Powered by Rockchip) ====

[    3.925331] =======================================================

[    3.928559] Realtek 8822CS SDIO WiFi driver (Powered by Rockchip,Ver v5.7.3_32588.20190319_COEX20190318-0a0a) init.

[    3.934962] [WLAN_RFKILL]: rockchip_wifi_power: 1

[    3.938174] [BT_RFKILL]: rfkill_get_bt_power_state: rfkill-bt driver has not Successful initialized

[    3.944725] [WLAN_RFKILL]: wifi turn on power. -1

[    3.948080] mmc2:mmc host rescan start!

[    3.951362] RTW: module init start

[    3.954605] RTW: rtl88x2cs v5.7.3_32588.20190319_COEX20190318-0a0a

[    3.958155] RTW: build time: Mar 23 2020 04:16:14

[    3.961598] RTW: rtl88x2cs BT-Coex version = COEX20190318-0a0a

[    3.965179] RTW: ## Calling platform_driver_register

[    4.167423] wifi_platform_bus_enumerate device present 1

[    4.180247] ======== Card detection to detect SDIO card! ========

[    4.192958] mmc2:mmc host rescan start!
复制代码

只看该作者 · 发表于 2020-3-27 09:58:37

cr7jj 发表于 2020-3-27 09:56

&sdio0 {
clock-frequency = <150000000>;
clock-freq-min-max = <200000 150000000>;
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 = "default";
pinctrl-0 = <&sdio0_bus4 &sdio0_cmd &sdio0_clk &sdio0_cd &sdio0_pwr >;
sd-uhs-sdr104;
status = "okay";
};

调试sdio wifi rtl8822cs，识别不了sdio卡

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