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[参考译文] Linux/processor-SDK-AM335X:MMC CLK 从用户空间禁用

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请注意,本文内容源自机器翻译,可能存在语法或其它翻译错误,仅供参考。如需获取准确内容,请参阅链接中的英语原文或自行翻译。

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/676425/linux-processor-sdk-am335x-mmc-clk-disable-from-userspace

器件型号:PROCESSOR-SDK-AM335X

工具/软件:Linux

大家好、

我想控制与 WiFi 连接的 MMC-3 clk 引脚。

需要从用户空间禁用此引脚以降低噪声。

下面是我的 DTS 配置:

       mmc3_pins:pinmux_mmc3_pins{
               pinctrl-single、pins =<
                       AM33XX_IOPAD (0x88C、PIN_INPUT | MUX_MODE3 | SLEWCTRL_SLOW)/*(T13) mmc2_clk *
                       AM33XX_IOPAD (0x888、PIN_INPUT_PULLUP | MUX_MODE3 | SLEWCTRL_SLOW)/*(V12) mmc2_cmd *
                       AM33XX_IOPAD (0x844、PIN_INPUT_PULLUP | MUX_MODE3 | SLEWCTRL_SLOW)/*(V14) mmc2_dat0 *
                       AM33XX_IOPAD (0x848、PIN_INPUT_PULLUP | MUX_MODE3 | SLEWCTRL_SLOW)/*(U14) mmc2_DAT1 *
                       AM33XX_IOPAD (0x84C、PIN_INPUT_PULLUP | MUX_MODE3 | SLEWCTRL_SLOW)/*(T14) mmc2_dat2 *
                       AM33XX_IOPAD (0x878、PIN_INPUT_PULLUP | MUX_MODE3 | SLEWCTRL_SLOW)/*(U18) mmc2_dat3 *
               >;
       };

是否可以从用户空间禁用它? 或者禁用 MMC-3整个引脚的任何可能方法?

您能给我建议一下可能的方法吗?