[U-Boot] [PATCH v6 07/12] arm:reset: call the reset_misc() before the cpu reset

[Przemyslaw Marczak]

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 at samsung.com>
Cc: Minkyu Kang <mk7.kang at samsung.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Cc: Albert ARIBAUD <albert.u.boot at aribaud.net>
Cc: Tom Rini <trini at ti.com>

Changes v4:
- arch/arm/reset: fix weak function attribute to proper style
---
 arch/arm/lib/reset.c | 6 ++++++
 include/common.h     | 1 +
 2 files changed, 7 insertions(+)

diff --git a/arch/arm/lib/reset.c b/arch/arm/lib/reset.c
index 7a03580..9a95f08 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 82c0a5a..48e4cbd 100644
--- a/include/common.h
+++ b/include/common.h
@@ -619,6 +619,7 @@ 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);
-- 
1.9.1