some sort of UART setup has to be done in order to use PUTC_LL
Signed-off-by: Vicente Bergas <vicencb@xxxxxxxxx>
---
arch/arm/mach-omap/include/mach/debug_ll.h | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/arch/arm/mach-omap/include/mach/debug_ll.h b/arch/arm/mach-omap/include/mach/debug_ll.h
index eea6eb3..9740848 100644
--- a/arch/arm/mach-omap/include/mach/debug_ll.h
+++ b/arch/arm/mach-omap/include/mach/debug_ll.h
@@ -45,9 +45,30 @@
#endif
#define LSR_THRE 0x20 /* Xmit holding register empty */
+#define LCR_BKSE 0x80 /* Bank select enable */
#define LSR (5 << 2)
#define THR (0 << 2)
+#define DLL (0 << 2)
+#define IER (1 << 2)
+#define DLM (1 << 2)
+#define FCR (2 << 2)
+#define LCR (3 << 2)
+#define MCR (4 << 2)
+#define MDR (8 << 2)
+static inline void INIT_LL(void)
+{
+ writeb(0x00, UART_BASE + LCR);
+ writeb(0x00, UART_BASE + IER);
+ writeb(0x07, UART_BASE + MDR);
+ writeb(LCR_BKSE, UART_BASE + LCR);
+ writeb(26, UART_BASE + DLL); /* 115200 */
+ writeb(0, UART_BASE + DLM);
+ writeb(0x03, UART_BASE + LCR);
+ writeb(0x03, UART_BASE + MCR);
+ writeb(0x07, UART_BASE + FCR);
+ writeb(0x00, UART_BASE + MDR);
+}
static inline void PUTC_LL(char c)
{
/* Wait until there is space in the FIFO */
--
1.8.1.5
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