Commit 2ae0f35f authored by Thomas Lange's avatar Thomas Lange Committed by Wolfgang Denk

ARM DaVinci: Reset with watchdog enabled

Once the Davinci watchdog has been enabled, the timeout
value cannot be changed. If the timeout in use is long,
it can take a long time for card to reset. By writing
an invalid service key, we can trigger an immediate reset.
Signed-off-by: default avatarThomas Lange <thomas@corelatus.se>
parent 6cc7ba9e
......@@ -50,6 +50,10 @@ reset_cpu:
str r1, [r0]
ldr r1, WDTCR_VAL2
str r1, [r0]
/* Write an invalid value to the WDKEY field to trigger
* an immediate watchdog reset */
mov r1, $0x4000
str r1, [r0]
nop
nop
nop
......
Markdown is supported
0% or
You are about to add 0 people to the discussion. Proceed with caution.
Finish editing this message first!
Please register or to comment