Commit 7255f87a authored Aug 21, 2012 by Alexander Shiyan Committed by Arnd Bergmann Sep 28, 2012

ARM: clps711x: Fix lowlevel debug-macro



CTS signal can not be used for the port and tied to any logic state.
In this case we have an infinite loop waiting for the signal. For fix
this problem, checking CTS removed, waiting for the signal "busy" was
postponed after the byte write to the port.

Signed-off-by: Alexander Shiyan <shc_work@mail.ru>

parent 61ae48c3

arch/arm/mach-clps711x/include/mach/debug-macro.S

+1 −7

Original line number	Diff line number	Diff line
		@@ -28,17 +28,11 @@
		.endm

		.macro waituart,rd,rx
		1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx
		tst \rd, #1 << 11 @ UBUSYx
		bne 1001b
		.endm

		.macro busyuart,rd,rx
		tst \rx, #0x1000 @ UART2 does not have CTS here
		bne 1002f
		1001: ldr \rd, [\rx, #0x0140] @ SYSFLGx
		tst \rd, #1 << 8 @ CTS
		tst \rd, #1 << 11 @ UBUSYx
		bne 1001b
		1002:
		.endm