diff options
| author | Dirk Behme <dirk.behme@de.bosch.com> | 2012-04-27 12:15:45 +0400 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2012-05-11 11:17:57 +0400 |
| commit | 785d7fab3eb0c39bcd8086055e7bd144c48158e4 (patch) | |
| tree | 09acce24a08b86cb4034dd5369dfb1e40a632f65 /arch/arm | |
| parent | ef44180680aafb29f50654f3325cf7791fa5433d (diff) | |
| download | linux-785d7fab3eb0c39bcd8086055e7bd144c48158e4.tar.xz | |
ARM: imx6: Add UART2 for low-level debug
To be able to enable early debugging on boards using the UART2 for the
console, add the option for early debugging on UART2.
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm')
| -rw-r--r-- | arch/arm/Kconfig.debug | 8 | ||||
| -rw-r--r-- | arch/arm/mach-imx/lluart.c | 6 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/debug-macro.S | 2 | ||||
| -rw-r--r-- | arch/arm/plat-mxc/include/mach/mx6q.h | 2 |
4 files changed, 18 insertions, 0 deletions
diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug index 85348a09d655..0f876c20bb1e 100644 --- a/arch/arm/Kconfig.debug +++ b/arch/arm/Kconfig.debug @@ -180,6 +180,14 @@ choice Say Y here if you want kernel low-level debugging support on i.MX50 or i.MX53. + config DEBUG_IMX6Q_UART2 + bool "i.MX6Q Debug UART2" + depends on SOC_IMX6Q + help + Say Y here if you want kernel low-level debugging support + on i.MX6Q UART2. This is correct for e.g. the SabreLite + board. + config DEBUG_IMX6Q_UART4 bool "i.MX6Q Debug UART4" depends on SOC_IMX6Q diff --git a/arch/arm/mach-imx/lluart.c b/arch/arm/mach-imx/lluart.c index 0213f8dcee81..c40a34c00489 100644 --- a/arch/arm/mach-imx/lluart.c +++ b/arch/arm/mach-imx/lluart.c @@ -17,6 +17,12 @@ #include <mach/hardware.h> 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), diff --git a/arch/arm/plat-mxc/include/mach/debug-macro.S b/arch/arm/plat-mxc/include/mach/debug-macro.S index 8ddda365f1a0..761e45f9456f 100644 --- a/arch/arm/plat-mxc/include/mach/debug-macro.S +++ b/arch/arm/plat-mxc/include/mach/debug-macro.S @@ -24,6 +24,8 @@ #define UART_PADDR MX51_UART1_BASE_ADDR #elif defined (CONFIG_DEBUG_IMX50_IMX53_UART) #define UART_PADDR MX53_UART1_BASE_ADDR +#elif defined (CONFIG_DEBUG_IMX6Q_UART2) +#define UART_PADDR MX6Q_UART2_BASE_ADDR #elif defined (CONFIG_DEBUG_IMX6Q_UART4) #define UART_PADDR MX6Q_UART4_BASE_ADDR #endif diff --git a/arch/arm/plat-mxc/include/mach/mx6q.h b/arch/arm/plat-mxc/include/mach/mx6q.h index 254a561a2799..f7e7dbac8f4b 100644 --- a/arch/arm/plat-mxc/include/mach/mx6q.h +++ b/arch/arm/plat-mxc/include/mach/mx6q.h @@ -27,6 +27,8 @@ #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 |