From: michal.simek@xilinx.com (Michal Simek)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH] ARM: zynq: Add waituart implementation
Date: Mon, 10 Feb 2014 11:37:03 +0100 [thread overview]
Message-ID: <13a04fc77bd93b2ad5a15a8967627a11fb7c8925.1392028615.git.michal.simek@xilinx.com> (raw)
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(+)
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
--
1.8.2.3
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