| SDIO Subsystem Test |
| ################## |
| |
| This test is designed to verify the SD subsystem stack implementation for SDIO |
| devices. Note that this test will only perform basic reads from the SDIO card |
| after initialization, as most registers present on the card will be vendor |
| specific. It requires an SDIO card be connected to the board to pass. |
| The test has the following phases: |
| |
| * Init test: verify the SD host controller can detect card presence, and |
| test the initialization flow of the SDIO subsystem to verify that the stack |
| can correctly initialize an SDIO card. |
| |
| * Read test: verify that a read from the SDIO common card register area returns |
| valid data. |
| |
| * Configuration test: verify that the SD stack reports a valid configuration |
| for this card after initialization. |
