From: Stefan Bosch <stefan_b@posteo.net>
To: u-boot@lists.denx.de
Subject: [RESEND PATCH v1 0/1] mmc: fix response timeout after switch command
Date: Sat, 23 Jan 2021 13:37:40 +0100 [thread overview]
Message-ID: <20210123123741.3224-1-stefan_b@posteo.net> (raw)
Currently I am implementing SPL for frienlyARM's NanoPC-T2 board (SoC
S5P4418). Loading of U-Boot from SD-card fails if CONFIG_SPL_MMC_TINY=y.
I.e. mmc_set_blocklen() inside mmc_bread() fails (Response Timeout),
caused by the previous call of __mmc_switch() in drivers/mmc/mmc.c:
Here the 'current state' of the card status keeps 'data' for several
100ms after issuing the switch command. Because of this state the next
command issued fails (in this case CMD16 = SET_BLOCKLEN). Patch: Wait
for 'current state' = 'tran' in __mmc_switch().
Stefan Bosch (1):
mmc: fix response timeout after switch command
drivers/mmc/mmc.c | 3 ++-
include/mmc.h | 1 +
2 files changed, 3 insertions(+), 1 deletion(-)
--
2.17.1
next reply other threads:[~2021-01-23 12:37 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-23 12:37 Stefan Bosch [this message]
2021-01-23 12:37 ` [RESEND PATCH v1 1/1] mmc: fix response timeout after switch command Stefan Bosch
2021-01-26 23:38 ` Jaehoon Chung
2021-01-28 19:23 ` Stefan Bosch
2021-01-28 22:00 ` Jaehoon Chung
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