zephyr

History

Michael Hope 42accf2e64 disk: add a SDHC card over SPI driver. Features: - Uses the SPI bus to communicate with the card - Detects and safely rejects SDSC (<= 2 GiB) cards - Uses the optional CRC support for data integrity - Retries resumable errors like CRC failure or temporary IO failure - Works well with ELMFAT - When used on a device with a FIFO or DMA, achieves >= 310 KiB/s on a 4 MHz bus Tested on a mix of SanDisk, Samsung, 4V, and ADATA cards from 4 GiB to 32 GiB. Signed-off-by: Michael Hope <mlhx@google.com>	2018-12-30 16:24:10 -05:00
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mmc-spi-slot.yaml	disk: add a SDHC card over SPI driver.	2018-12-30 16:24:10 -05:00

Michael Hope 42accf2e64 disk: add a SDHC card over SPI driver.

Features:

- Uses the SPI bus to communicate with the card
- Detects and safely rejects SDSC (<= 2 GiB) cards
- Uses the optional CRC support for data integrity
- Retries resumable errors like CRC failure or temporary IO failure
- Works well with ELMFAT
- When used on a device with a FIFO or DMA, achieves >= 310 KiB/s on a
  4 MHz bus

Tested on a mix of SanDisk, Samsung, 4V, and ADATA cards from 4 GiB to
32 GiB.

Signed-off-by: Michael Hope <mlhx@google.com>

2018-12-30 16:24:10 -05:00

mmc-spi-slot.yaml

disk: add a SDHC card over SPI driver.

2018-12-30 16:24:10 -05:00