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ARM: zynq: Add waituart implementation

Message ID 13a04fc77bd93b2ad5a15a8967627a11fb7c8925.1392028615.git.michal.simek@xilinx.com (mailing list archive)
State New, archived
Headers show

Commit Message

Michal Simek Feb. 10, 2014, 10:37 a.m. UTC 
Add missing waituart implementation.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

 arch/arm/include/debug/zynq.S | 3 +++
 1 file changed, 3 insertions(+)

--
1.8.2.3
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Patch

diff --git a/arch/arm/include/debug/zynq.S b/arch/arm/include/debug/zynq.S
index f9aa974..0b762fa 100644
--- a/arch/arm/include/debug/zynq.S
+++ b/arch/arm/include/debug/zynq.S
@@ -42,6 +42,9 @@ 
 		.endm

 		.macro	waituart,rd,rx
+1001:		ldr	\rd, [\rx, #UART_SR_OFFSET]
+		tst	\rd, #UART_SR_TXEMPTY
+		beq	1001b
 		.endm

 		.macro	busyuart,rd,rx