Hi, On 02/01/2017 04:23 PM, amit mahadik wrote: > Hello, > I want to interface MMC card via SPI bus. However, I am > getting CRC errors for CMD18. I tried reading partition table using > CMD17 but still get errors. > The same SDMMC card gets detected using SD interface. I want to > compare the data of CMD18/CMD17 of SD and SPI modes. Please let me > know how can I print the read data of the said commands in the block > layer? In my experience, CRC error was timing issue..(clock, driver-strength, etc..) You can check those things. Best Regards, Jaehoon Chung > > I tried using the following code but it didn't help > > sg_copy_to_buffer(brq->data.sg, brq->data.sg_len, buf, 4096); and printed buf. > > Regards, > Amit. > -- > To unsubscribe from this list: send the line "unsubscribe linux-mmc" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > > -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
