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arm, davinci: add workaround for not resetting DMA bus and VPSS modules

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The Buffer Logic of VPSS is Not Reset by System Reset Pin, see
http://www.ti.com/lit/er/sprz316b/sprz316b.pdf chapter Advisory 1.2.1
on page 9. Add workaroundcode proposed in the errata.

Signed-off-by: Heiko Schocher <hs@denx.de>
Cc: Sandeep Paulraj <s-paulraj@ti.com>
Cc: Tom Rini <tom.rini@gmail.com>
This commit is contained in:
Heiko Schocher
2012-01-14 21:42:46 +00:00
committed by Albert ARIBAUD
parent f59021791b
commit 3f84108b99
4 changed files with 61 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
arch/arm/include/asm/arch-davinci/dm365_lowlevel.h
View File

@@ -32,7 +32,6 @@ void dm365_waitloop(unsigned long loopcnt);
int dm365_pll1_init(unsigned long pllmult, unsigned long prediv);
int dm365_pll2_init(unsigned long pllm, unsigned long prediv);
int dm365_ddr_setup(void);
void dm365_por_reset(void);
void dm365_psc_init(void);
void dm365_pinmux_ctl(unsigned long offset, unsigned long mask,
unsigned long value);

9
arch/arm/include/asm/arch-davinci/hardware.h
View File

@@ -587,6 +587,15 @@ static inline int get_async3_src(void)
#include <asm/arch/psc_defs.h>
#include <asm/arch/syscfg_defs.h>
#include <asm/arch/timer_defs.h>
#define TMPBUF 0x00017ff8
#define TMPSTATUS 0x00017ff0
#define DV_TMPBUF_VAL 0x591b3ed7
#define FLAG_PORRST 0x00000001
#define FLAG_WDTRST 0x00000002
#define FLAG_FLGON 0x00000004
#define FLAG_FLGOFF 0x00000010
#endif
struct davinci_rtc {

3
arch/arm/include/asm/arch-davinci/timer_defs.h
View File

@@ -37,6 +37,9 @@ struct davinci_timer {
u_int32_t wdtcr;
};
#define DV_WDT_ENABLE_SYS_RESET 0x00020000
#define DV_WDT_TRIGGER_SYS_RESET 0x00020002
#ifdef CONFIG_HW_WATCHDOG
void davinci_hw_watchdog_enable(void);
void davinci_hw_watchdog_reset(void);