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sdmmc_host: add unit tests and improve documents about using eMMC in 4-line SDR mode

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Michael (XIAO Xufeng)
2021-04-25 18:34:37 +08:00
parent 00a66083c7
commit 02970813b8
2 changed files with 9 additions and 2 deletions
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docs/en/api-reference/peripherals/sdmmc_host.rst
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@@ -51,8 +51,8 @@ Supported Speed Modes
SDMMC Host driver supports the following speed modes:
- Default Speed (20 MHz), 4-line/1-line (with SD cards), and 8-line (with 3.3 V eMMC)
- High Speed (40 MHz), 4-line/1-line (with SD cards), and 8-line (with 3.3 V eMMC)
- Default Speed (20 MHz), 1/4-line (with SD cards), and 1/4/8-line (with 3.3 V eMMC)
- High Speed (40 MHz), 1/4-line (with SD cards), and 1/4/8-line (with 3.3 V eMMC)
- High Speed DDR (40 MHz), 4-line (with 3.3 V eMMC)
Speed modes not supported at present: