| SDHC API Test |
| ################## |
| |
| This test is designed to verify the functionality of a device implementing the |
| SD host controller API. It requires that an SD card be present on the SD bus |
| to pass. The test has the following phases: |
| |
| * Reset test: Verify the SDHC can successfully reset the host controller state. |
| This primarily tests that the driver returns zero for this call, although if |
| the reset left the SDHC in a bad state subsequent tests may fail. |
| |
| * Host props: Get host properties structure from SDHC. This verifies that |
| the API returns a valid host property structure (at a minimum, the driver |
| must initialize all fields of the structure to zero.) |
| |
| * Set_IO test: Verify that the SDHC will reject clock frequencies outside of |
| the frequency range it claims to support via sdhc_get_host_props. |
| |
| * Card presence test. Verify that the SDHC detects card presence. |
| |
| * Request test: Make a request to read the card interface condition, |
| and verify that valid data is returned. |
| |
| Note that this test does not verify the tuning or card busy api, as the SD |
| specification is state based, and testing these portions of the SDHC would |
| require implementing a large portion of the SD subsystem in this test. |
