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Commit fffe53be authored by Mike Frysinger's avatar Mike Frysinger Committed by Bryan Wu
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Blackfin arch: fix bug - sometimes there is no response to the hitting key in... 


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: default avatarMike Frysinger <vapier.adi@gmail.com>
Signed-off-by: default avatarBryan Wu <cooloney@kernel.org>
parent 5c64e0d5

arch/blackfin/kernel/reboot.c

+3 −3
Original line number Diff line number Diff line
@@ -34,15 +34,15 @@ void bfin_reset(void) 
		bfin_write_SWRST(0x7);



		/* Due to the way reset is handled in the hardware, we need

		 * to delay for 7 SCLKS.  The only reliable way to do this is

		 * to calculate the CCLK/SCLK ratio and multiply 7.  For now,

		 * to delay for 10 SCLKS.  The only reliable way to do this is

		 * to calculate the CCLK/SCLK ratio and multiply 10.  For now,

		 * we'll assume worse case which is a 1:15 ratio.

		 */

		asm(

			"LSETUP (1f, 1f) LC0 = %0\n"

			"1: nop;"

			:

			: "a" (15 * 7)

			: "a" (15 * 10)

			: "LC0", "LB0", "LT0"

		);