Boot hangs during sdhci_transfer_data_dma

Robin van der Gracht robin at
Tue Jun 21 03:07:50 PDT 2022

On 2022-06-21 09:46, Sascha Hauer wrote:
> Hi Robin,
> We should only ever
> clear the bits we have handled, like sdhci_transfer_data_dma() does with
> 	sdhci_write32(sdhci, SDHCI_INT_STATUS, SDHCI_INT_DMA);

I just noticed that the tegra-sdmmc mci driver might have the same issue.

It can prevent the following conditional from ever evaluating true trapping
the process in the while loop.

This driver clears the status register on error (not on start/end of 
with an old value 'val' which can be lacking status bits that popped up
along the way...

I can't test code changes for this platform.

- Robin

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