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您好；SDIO总线可以设置不同的速率，我们默认设置了第一种，你可以试试100M和200M的速率
pinctrl_usdhc3: usdhc3grp {
fsl,pins = <
MX6QDL_PAD_SD3_CMD__SD3_CMD 0x17059
MX6QDL_PAD_SD3_CLK__SD3_CLK 0x10059
MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x17059
MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x17059
MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x17059
MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x17059
MX6QDL_PAD_SD3_DAT4__SD3_DATA4 0x17059
MX6QDL_PAD_SD3_DAT5__SD3_DATA5 0x17059
MX6QDL_PAD_SD3_DAT6__SD3_DATA6 0x17059
MX6QDL_PAD_SD3_DAT7__SD3_DATA7 0x17059
>;
};
pinctrl_usdhc3_100mhz: usdhc3grp100mhz {
fsl,pins = <
MX6QDL_PAD_SD3_CMD__SD3_CMD 0x170b9
MX6QDL_PAD_SD3_CLK__SD3_CLK 0x100b9
MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x170b9
MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x170b9
MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x170b9
MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x170b9
MX6QDL_PAD_SD3_DAT4__SD3_DATA4 0x170b9
MX6QDL_PAD_SD3_DAT5__SD3_DATA5 0x170b9
MX6QDL_PAD_SD3_DAT6__SD3_DATA6 0x170b9
MX6QDL_PAD_SD3_DAT7__SD3_DATA7 0x170b9
>;
};
pinctrl_usdhc3_200mhz: usdhc3grp200mhz {
fsl,pins = <
MX6QDL_PAD_SD3_CMD__SD3_CMD 0x170f9
MX6QDL_PAD_SD3_CLK__SD3_CLK 0x100f9
MX6QDL_PAD_SD3_DAT0__SD3_DATA0 0x170f9
MX6QDL_PAD_SD3_DAT1__SD3_DATA1 0x170f9
MX6QDL_PAD_SD3_DAT2__SD3_DATA2 0x170f9
MX6QDL_PAD_SD3_DAT3__SD3_DATA3 0x170f9
MX6QDL_PAD_SD3_DAT4__SD3_DATA4 0x170f9
MX6QDL_PAD_SD3_DAT5__SD3_DATA5 0x170f9
MX6QDL_PAD_SD3_DAT6__SD3_DATA6 0x170f9
MX6QDL_PAD_SD3_DAT7__SD3_DATA7 0x170f9
>;
}; |
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发表于 2017-6-22 10:10:50
