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sdio-wifi 驱动 sdio_readl wait_for_completion(&mrq->completion); 阻塞

Jupon zhu
Prodigy 30 points
Other Parts Discussed in Thread: AM4376

调试过程中，我们已经能够在/sys/bus/sdio/devices/下发现设备

 mmc2:0001:1 mmc2:0001:2 mmc2:0001:3

 

硬件：AM4376，wifi模组（IC为BCM43455）

内核: linux3.12

硬件连接: 4根data，cmd,clk【我们没有使用CD检测脚】

dts配置如下：ti,non-removable;和broken-cd;都试过

mmc3: mmc@47810000 {
compatible = "ti,omap4-hsmmc";
reg = <0x47810000 0x1000>;
ti,hwmods = "mmc3";
clocks = <&mmc_clk>, <&clkdiv32k_ick>;
clock-names = "fck", "mmchsdb_fck";
ti,dual-volt;
ti,needs-special-reset;
dmas = <&edma 22
&edma 23>;
dma-names = "tx", "rx";
interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
// status = "disabled";
status = "okay";
};

mmc3_pins: pinmux_mmc3_pins {
pinctrl-single,pins = <
0x1f0 (PIN_INPUT_PULLUP | MUX_MODE3) 
0x1f4 (PIN_INPUT_PULLUP | MUX_MODE3)
0x1f8 (PIN_INPUT_PULLUP | MUX_MODE3) 
0x1fc (PIN_INPUT_PULLUP | MUX_MODE3) 
0x200 (PIN_INPUT_PULLUP | MUX_MODE3)
0x204 (PIN_INPUT_PULLUP | MUX_MODE3) 
};

mmc3_sleep_pins: pinmux_mmc3_sleep_pins {
pinctrl-single,pins = <
0x1f0 (PIN_INPUT | MUX_MODE3)
0x1f4 (PIN_INPUT | MUX_MODE3)
0x1f8 (PIN_INPUT | MUX_MODE3) 
0x1fc (PIN_INPUT | MUX_MODE3) 

0x200 (PIN_INPUT | MUX_MODE3) 
0x204 (PIN_INPUT | MUX_MODE3) 
>;
};

&mmc3 {
status = "okay";
vmmc-supply = <&vmmcsd_fixed>;
bus-width = <4>;
pinctrl-names = "default", "sleep";
pinctrl-0 = <&mmc3_pins>;
pinctrl-1 = <&mmc3_sleep_pins>;
// ti,non-removable;
broken-cd;
keep-power-in-suspend;
};



  • 0
    TI__Genius 9922 points

    你好， 你的问题是sdio_readl wait_for_completion(&mrq->completion); 阻塞吗？驱动是自己写的吗？

  • 0 回复 Eggsy Pang
    Prodigy 30 points

    是别的厂家提供的驱动，之前通过mm1的TF卡座，是可以运行的。但目前放在mmc3却不可以。

  • 0
    TI__Genius 9922 points

    mmc3: mmc@47810000 {
    compatible = "ti,omap4-hsmmc";
    reg = <0x47810000 0x1000>;
    ti,hwmods = "mmc3";
    clocks = <&mmc_clk>, <&clkdiv32k_ick>;
    clock-names = "fck", "mmchsdb_fck";
    ti,dual-volt;
    ti,needs-special-reset;
    dmas = <&edma 22
    &edma 23>;
    dma-names = "tx", "rx";
    interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
    // status = "disabled";
    status = "okay";
    };

    不需要改动，保持原有的

    mmc3: mmc@47810000 {
    compatible = "ti,omap4-hsmmc";
    reg = <0x47810000 0x1000>;
    ti,hwmods = "mmc3";
    ti,needs-special-reset;
    interrupts = <GIC_SPI 29 IRQ_TYPE_LEVEL_HIGH>;
    status = "disabled";
    };

    然后对于mmc3

    &mmc3 {
    status = "okay";
    /* these are on the crossbar and are outlined in the
    xbar-event-map element */
    dmas = <&edma_xbar 30 0 1>,
    <&edma_xbar 31 0 2>;
    dma-names = "tx", "rx";
    vmmc-supply = <&vmmcwl_fixed>;
    bus-width = <4>;
    pinctrl-names = "default", "sleep";
    pinctrl-0 = <&mmc3_pins_default>;
    pinctrl-1 = <&mmc3_pins_sleep>;
    cap-power-off-card;
    keep-power-in-suspend;
    ti,non-removable;

    #address-cells = <1>;
    #size-cells = <0>;
    wlcore: wlcore@0 {
    compatible = "ti,wl1835";
    reg = <2>;
    interrupt-parent = <&gpio1>;
    interrupts = <23 IRQ_TYPE_LEVEL_HIGH>;
    }; //替换你要的驱动 和中断引脚 

    //如果你有CS引脚记得添加
    };

    pinmux要注意看MMC3和其他功能引脚有没有冲突。

  • 0 回复 Eggsy Pang
    Prodigy 30 points

    1  edma_xbar怎么配置？

    2  vmmcwl_fixed怎么配置？

    3 compatible = "ti,wl1835"; 换成我们的驱动的compatible是否可以？

    4 interrupt-parent = <&gpio1>;中的gpio1怎么配置？

    5 interrupts = <23 IRQ_TYPE_LEVEL_HIGH>;这个可以修改不？