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authorMike Frysinger <vapier.adi@gmail.com>2008-10-08 02:46:09 -0400
committerBryan Wu <cooloney@kernel.org>2008-10-08 02:46:09 -0400
commitfffe53bee7d90ab2103d2520ab4d095aea9b7397 (patch)
tree56f6bc36b61fb9b618e103b7ebb1f59bedd32b1c /arch
parent5c64e0d5109532f8184be29c1dc163059e3ded4b (diff)
Blackfin arch: fix bug - sometimes there is no response to the hitting key in uboot for bf561-ezkit when running with 50mhz SCLK
use 10 delays rather than 7 Signed-off-by: Mike Frysinger <vapier.adi@gmail.com> Signed-off-by: Bryan Wu <cooloney@kernel.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/blackfin/kernel/reboot.c6
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/blackfin/kernel/reboot.c b/arch/blackfin/kernel/reboot.c
index 367e2dc09881..b0a8f89cc9b6 100644
--- a/arch/blackfin/kernel/reboot.c
+++ b/arch/blackfin/kernel/reboot.c
@@ -34,15 +34,15 @@ void bfin_reset(void)
34 bfin_write_SWRST(0x7); 34 bfin_write_SWRST(0x7);
35 35
36 /* Due to the way reset is handled in the hardware, we need 36 /* Due to the way reset is handled in the hardware, we need
37 * to delay for 7 SCLKS. The only reliable way to do this is 37 * to delay for 10 SCLKS. The only reliable way to do this is
38 * to calculate the CCLK/SCLK ratio and multiply 7. For now, 38 * to calculate the CCLK/SCLK ratio and multiply 10. For now,
39 * we'll assume worse case which is a 1:15 ratio. 39 * we'll assume worse case which is a 1:15 ratio.
40 */ 40 */
41 asm( 41 asm(
42 "LSETUP (1f, 1f) LC0 = %0\n" 42 "LSETUP (1f, 1f) LC0 = %0\n"
43 "1: nop;" 43 "1: nop;"
44 : 44 :
45 : "a" (15 * 7) 45 : "a" (15 * 10)
46 : "LC0", "LB0", "LT0" 46 : "LC0", "LB0", "LT0"
47 ); 47 );
48 48