Signed-off-by: Sascha Hauer <s.hauer@xxxxxxxxxxxxxx>
---
arch/arm/Kconfig | 1 +
arch/arm/mach-mxs/include/mach/debug_ll.h | 22 ++++++++++++++++++++++
2 files changed, 23 insertions(+)
create mode 100644 arch/arm/mach-mxs/include/mach/debug_ll.h
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index e7d8cdd..8b95696 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -90,6 +90,7 @@ config ARCH_MXS
select GENERIC_GPIO
select COMMON_CLK
select CLKDEV_LOOKUP
+ select HAS_DEBUG_LL
config ARCH_NETX
bool "Hilscher NetX based"
diff --git a/arch/arm/mach-mxs/include/mach/debug_ll.h b/arch/arm/mach-mxs/include/mach/debug_ll.h
new file mode 100644
index 0000000..9e3ce1c
--- /dev/null
+++ b/arch/arm/mach-mxs/include/mach/debug_ll.h
@@ -0,0 +1,22 @@
+#ifndef __MACH_DEBUG_LL_H__
+#define __MACH_DEBUG_LL_H__
+
+#include <io.h>
+#include <mach/imx-regs.h>
+
+#define UARTDBGDR 0x00
+#define UARTDBGFR 0x18
+# define TXFE (1 << 7)
+# define TXFF (1 << 5)
+
+static inline void PUTC_LL(int c)
+{
+ void __iomem *base = (void *)IMX_DBGUART_BASE;
+
+ /* Wait for room in TX FIFO */
+ while (!(readl(base + UARTDBGFR) & TXFE));
+
+ writel(c, base + UARTDBGDR);
+}
+
+#endif /* __MACH_DEBUG_LL_H__ */
--
1.8.3.2
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