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| /rk3399_rockchip-uboot/drivers/mmc/ |
| H A D | omap_hsmmc.c | 25c719e2c3247ef0bab28ee562f978e2ce9211e3 Mon Mar 19 12:12:06 UTC 2012 Grazvydas Ignotas <notasas@gmail.com> mmc: omap: handle controller errors properly
According to OMAP3 TRM, when the controller reports certain errors,
driver must perform a software reset. This is done by setting a bit
in SYSCTL and waiting it to clear:
- SRC on command timeout (CTO)
- SRD on data errors (DTO, DCRC and DEB)
This fixes a problem seen on OMAP3 pandora board with some cards
that won't work with a message printed multiple times:
timedout waiting on cmd inhibit to clear
Code loosely based on Linux omap_hsmmc driver.
Signed-off-by: Grazvydas Ignotas <notasas@gmail.com>
Tested-by: Tom Rini <trini@ti.com>
Tested-by: Pali Rohár <pali.rohar@gmail.com>
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