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Autodetect of SD card speed?

Question asked by Alexander Lampret on Sep 20, 2017
Latest reply on Sep 20, 2017 by igorpadykov

Hello everyone,

 

one basic question regarding boot_cfg and sd card speed.

The sd card speed is defined by BOOT_CFG parameters.

After successful boot does linux rely on the boot_cfg settings or is sd card speed auto-detected?

 

As an example, if I specify BOOT_CFG to SDR12 but SD card supports SDR104. Does linux automatically switch to SDR104 or do I need to correctly specify BOOT_CFG?

 

Thx in advance!

 

Best regards,

Alexander

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