张大帅 发表于 2024-3-12 15:20:30

tf卡插上无法读取

各位大佬帮忙看下：
       开发板插上tf卡后，dev/没有接口文件生成，下面是报错日志，好像和读写速率有关。。
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You
[ 1761.075647] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0)[ 1761.110799] mmc_host mmc1: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0)[ 1761.148312] mmc_host mmc1: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0)[ 1761.186512] dwmmc_rockchip fe2c0000.mmc: failed to set rate 100000Hz[ 1761.186590] mmc_host mmc1: Bus speed (slot 0) = 200000Hz (slot req 100000Hz, actual 100000HZ div = 1)[ 1761.199286] dwmmc_rockchip fe2c0000.mmc: failed to set rate 100000Hz[ 1761.203464] dwmmc_rockchip fe2c0000.mmc: failed to set rate 100000Hz





岁月如故 发表于 2024-10-30 13:34:02

有一样的问题，请问楼主是怎么解决的，设备树里面限速？
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