diff mbox

[U-Boot,05/10] arm:reset: call the reset_misc() before the cpu reset

Message ID 1402399984-9343-3-git-send-email-p.marczak@samsung.com
State Changes Requested
Delegated to: Minkyu Kang
Headers show

Commit Message

Przemyslaw Marczak June 10, 2014, 11:32 a.m. UTC 
On an Odroid U3 board, the SOC is unable to reset an 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>
---
 arch/arm/lib/reset.c | 7 +++++++
 include/common.h     | 1 +
 2 files changed, 8 insertions(+)
diff mbox

Patch

diff --git a/arch/arm/lib/reset.c b/arch/arm/lib/reset.c
index 7a03580..3b39466 100644
--- a/arch/arm/lib/reset.c
+++ b/arch/arm/lib/reset.c
@@ -23,6 +23,11 @@ 
 
 #include <common.h>
 
+void __reset_misc(void) {}
+
+void reset_misc(void)
+	__attribute((weak, alias("__reset_misc")));
+
 int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
 {
 	puts ("resetting ...\n");
@@ -30,6 +35,8 @@  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 232136c..04bab78 100644
--- a/include/common.h
+++ b/include/common.h
@@ -629,6 +629,7 @@  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);