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fix(sdmmc): extend the maximum number of retries of ACMD41

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According to the application note in SD Card Physical Specification:

> The host shall set ACMD41 timeout more than 1 second to abort repeat
of issuing ACMD41 when the card does not indicate ready. The timeout
count starts from the first ACMD41 which is set voltage window
in the argument.

Previously, the timeout was exactly one second, and this caused
certain larger-capacity cards to "time out", because they couldn't
finish initialization process in time.
This commit is contained in:
Ivan Grokhotkov 2024-02-27 12:21:09 +01:00
parent dceec3fac0
commit 6383fd550a
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1 changed files with 1 additions and 1 deletions
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2
components/sdmmc/sdmmc_common.h
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@ -41,7 +41,7 @@
/* Maximum retry/error count for SEND_OP_COND (CMD1).
* These are somewhat arbitrary, values originate from OpenBSD driver.
*/
#define SDMMC_SEND_OP_COND_MAX_RETRIES 100
#define SDMMC_SEND_OP_COND_MAX_RETRIES 300
#define SDMMC_SEND_OP_COND_MAX_ERRORS 3
/* Functions to send individual commands */