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authorShawn Guo <shawn.guo@linaro.org>2012-10-08 13:44:29 +0800
committerShawn Guo <shawn.guo@linaro.org>2012-11-16 14:18:52 +0800
commit49c9e60eaaa966cdb02ac9e989eeb6f940691c5d (patch)
treedc07cdb19a2ac15f571067fa52de470c24f29528 /arch/arm/mach-imx
parent2a3246713560344254bf96aa00def0cae26d564f (diff)
ARM: imx6q: let users input debug uart port number
imx6q gets 5 uart ports in total. Different board design may choose different port as debug uart. For example, imx6q-sabresd uses UART1, imx6q-sabrelite uses UART2 and imx6q-arm2 uses UART4. Rather than bloating DEBUG_LL choice list with all these uart ports, the patch introduces DEBUG_IMX6Q_UART_PORT for users to input uart port number when DEBUG_IMX6Q_UART is selected inside DEBUG_LL choice. Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/mach-imx')
-rw-r--r--arch/arm/mach-imx/lluart.c28
-rw-r--r--arch/arm/mach-imx/mx6q.h4
2 files changed, 18 insertions, 14 deletions
diff --git a/arch/arm/mach-imx/lluart.c b/arch/arm/mach-imx/lluart.c
index 5f1510363ee..2fdc9bf2fb5 100644
--- a/arch/arm/mach-imx/lluart.c
+++ b/arch/arm/mach-imx/lluart.c
@@ -17,17 +17,25 @@
#include "hardware.h"
+#define IMX6Q_UART1_BASE_ADDR 0x02020000
+#define IMX6Q_UART2_BASE_ADDR 0x021e8000
+#define IMX6Q_UART3_BASE_ADDR 0x021ec000
+#define IMX6Q_UART4_BASE_ADDR 0x021f0000
+#define IMX6Q_UART5_BASE_ADDR 0x021f4000
+
+/*
+ * IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
+ * of IMX6Q_UART##n##_BASE_ADDR.
+ */
+#define IMX6Q_UART_BASE_ADDR(n) IMX6Q_UART##n##_BASE_ADDR
+#define IMX6Q_UART_BASE(n) IMX6Q_UART_BASE_ADDR(n)
+#define IMX6Q_DEBUG_UART_BASE IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
+
static struct map_desc imx_lluart_desc = {
-#ifdef CONFIG_DEBUG_IMX6Q_UART2
- .virtual = MX6Q_IO_P2V(MX6Q_UART2_BASE_ADDR),
- .pfn = __phys_to_pfn(MX6Q_UART2_BASE_ADDR),
- .length = MX6Q_UART2_SIZE,
- .type = MT_DEVICE,
-#endif
-#ifdef CONFIG_DEBUG_IMX6Q_UART4
- .virtual = MX6Q_IO_P2V(MX6Q_UART4_BASE_ADDR),
- .pfn = __phys_to_pfn(MX6Q_UART4_BASE_ADDR),
- .length = MX6Q_UART4_SIZE,
+#ifdef CONFIG_DEBUG_IMX6Q_UART
+ .virtual = IMX_IO_P2V(IMX6Q_DEBUG_UART_BASE),
+ .pfn = __phys_to_pfn(IMX6Q_DEBUG_UART_BASE),
+ .length = 0x4000,
.type = MT_DEVICE,
#endif
};
diff --git a/arch/arm/mach-imx/mx6q.h b/arch/arm/mach-imx/mx6q.h
index f7e7dbac8f4..19d3f54db5a 100644
--- a/arch/arm/mach-imx/mx6q.h
+++ b/arch/arm/mach-imx/mx6q.h
@@ -27,9 +27,5 @@
#define MX6Q_CCM_SIZE 0x4000
#define MX6Q_ANATOP_BASE_ADDR 0x020c8000
#define MX6Q_ANATOP_SIZE 0x1000
-#define MX6Q_UART2_BASE_ADDR 0x021e8000
-#define MX6Q_UART2_SIZE 0x4000
-#define MX6Q_UART4_BASE_ADDR 0x021f0000
-#define MX6Q_UART4_SIZE 0x4000
#endif /* __MACH_MX6Q_H__ */