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authorPrzemyslaw Marczak <p.marczak@samsung.com>2014-09-01 13:50:48 +0200
committerMinkyu Kang <mk7.kang@samsung.com>2014-09-05 13:58:49 +0900
commit1fb4dab2a1444df7f0a8d1cc3887a7e6605635f5 (patch)
tree6c97ef1bb4622f62e0afb6395b5a102383cb244e
parent32ee9bc5ed615497179a4b0e38322d1a250f2c79 (diff)
arm:reset: call the reset_misc() before the cpu reset
On an Odroid U3 board, the SOC is unable to reset the eMMC card in the DWMMC mode by the cpu software reset. Manual reset of the card by switching proper gpio pin - fixes this issue. Such solution needs to add a call to pre reset function. This is done by the reset_misc() function, which is called before reset_cpu(). The function reset_misc() is a weak function. Signed-off-by: Przemyslaw Marczak <p.marczak@samsung.com> Cc: Minkyu Kang <mk7.kang@samsung.com> Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Cc: Albert ARIBAUD <albert.u.boot@aribaud.net> Cc: Tom Rini <trini@ti.com> Changes v4: - arch/arm/reset: fix weak function attribute to proper style Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
-rw-r--r--arch/arm/lib/reset.c6
-rw-r--r--include/common.h1
2 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm/lib/reset.c b/arch/arm/lib/reset.c
index 7a0358071ce..9a95f085044 100644
--- a/arch/arm/lib/reset.c
+++ b/arch/arm/lib/reset.c
@@ -23,6 +23,10 @@
#include <common.h>
+__weak void reset_misc(void)
+{
+}
+
int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
{
puts ("resetting ...\n");
@@ -30,6 +34,8 @@ int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
udelay (50000); /* wait 50 ms */
disable_interrupts();
+
+ reset_misc();
reset_cpu(0);
/*NOTREACHED*/
diff --git a/include/common.h b/include/common.h
index c7e51ca41c9..97c04df588e 100644
--- a/include/common.h
+++ b/include/common.h
@@ -616,6 +616,7 @@ int checkicache (void);
int checkdcache (void);
void upmconfig (unsigned int, unsigned int *, unsigned int);
ulong get_tbclk (void);
+void reset_misc (void);
void reset_cpu (ulong addr);
#if defined (CONFIG_OF_LIBFDT) && defined (CONFIG_OF_BOARD_SETUP)
void ft_cpu_setup(void *blob, bd_t *bd);