Commit Graph

7 Commits

Author SHA1 Message Date
Martin Vychodil
56f2001317 sdmmc/sdspi: allow custom setup of SD card frequency
In order to allow flexible setup of SD card frequency, sdmmc_host_t.max_freq_khz is used as a limit

Closes https://github.com/espressif/arduino-esp32/issues/6225
2022-09-12 17:08:36 +02:00
Ivan Grokhotkov
79659e3096
sdmmc: better calculation of erase timeout
Previous version of the code used a fixed constant (500 ms) for the
erase timeout and added 1 ms for each sector erased.
This commit improves timeouts calculation:
- For SD cards, check if erase timeout information is present in the
  SSR register. If yes, use it for erase timeout calculation.
  Otherwise assume 250ms per erase block, same as Linux does.
- For eMMC assume 250ms per erase block (but no less than 1 second).
  This has to be improved later to use the erase timeout info in the
  extended CSD register.
2022-05-30 15:39:02 +02:00
Vamshi Gajjela
ffdbeee9f6 sdmmc: Add erase command-38. Support erase/trim/discard/sanitize
options.

Erase command (38) for SD cards allows option for erase/dicard/fule
operation at block level and for MMC cards supports option for
discard/trim at block level. When Sanitize is executed only the
portion of data that was unmapped by a Discard command shall be
removed by the Sanitize command.

Unit test cases added to verify ERASE feature in SD/SDSPI mode.
TRIM/DISCARD/SANITIZE tests for eMMC devices.

Closes https://github.com/espressif/esp-idf/pull/7635
Closes https://github.com/espressif/esp-idf/issues/7623
2022-03-05 16:02:01 +05:30
michael
8a364b4bdf sdmmc: support SDIO over SPI 2019-04-12 02:24:28 +08:00
Ivan Grokhotkov
ab68b9d90d soc,sdmmc: fix build failures when NDEBUG is used
Use explicit error checking instead of asserts, use SOC_LOG to print
error/warning messages where needed.
2018-10-15 14:57:12 +08:00
Ivan Grokhotkov
78fab8a0f9 sdmmc: implement partial DDR support
Works for 3.3V eMMC in 4 line mode.
Not implemented:
- DDR mode for SD cards (UHS-I) also need voltage to be switched to 1.8V.
- 8-line DDR mode for eMMC to be implemented later.
2018-08-30 13:11:54 +08:00
Ivan Grokhotkov
de42d99b1d sdmmc: command layer refactoring 2018-08-30 13:11:54 +08:00