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804a40830e
Properly configure pull up and pull down offsets for autocal. Run autocal prior to every transfer. Prevent race conditions in sdmmc_wait_for_event() - make sure the fault handler has highest priority, then the target irq, state conditions and finally the error mask. Do not clear all bits (|=) when acknowledging fault conditions, only acknowledge the fault conditions itself. Enable interrupts before preparing command registers - if sdmmc is fast enough it can actually finish transfer before we enabled the interrupts. Enabling interrupts clears the COMMAND COMPLETE status bit. Temporarily print all the sdmmc messages in stage2 - for yet unknown reason respecting the log level results in some failures. This results in working microsd card in stage2 on my switch with Samsung EVO+ 256GB microsd card. |
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