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authorMurali Karicheri <m-karicheri2@ti.com>2014-05-29 18:57:12 +0300
committerTom Rini <trini@ti.com>2014-06-06 17:46:14 -0400
commitafee59cd49449e7b7d538d919b6e8ab5184e5b93 (patch)
treeba2daffdd1bc4c7d0f18168d39b7aa7425971ae5 /arch/arm/cpu/armv7/keystone/init.c
parent196311dc728bbb9484356547b9daa731ca2feb8d (diff)
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keystone: init: enable UART1 to be able use it from kernel
Currently PWREMU_MGMT is not configured in the Linux generic UART driver as this register seems to be specific TI UART IP. So this needs to be enabled in u-boot to use UART1 from kernel space. Acked-By: Vitaly Andrianov <vitalya@ti.com> Signed-off-by: Murali Karicheri <m-karicheri2@ti.com> Signed-off-by: Ivan Khoronzhuk <ivan.khoronzhuk@ti.com>
Diffstat (limited to 'arch/arm/cpu/armv7/keystone/init.c')
-rw-r--r--arch/arm/cpu/armv7/keystone/init.c9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/keystone/init.c b/arch/arm/cpu/armv7/keystone/init.c
index 044015a..4df5ae1 100644
--- a/arch/arm/cpu/armv7/keystone/init.c
+++ b/arch/arm/cpu/armv7/keystone/init.c
@@ -8,6 +8,7 @@
*/
#include <common.h>
+#include <ns16550.h>
#include <asm/io.h>
#include <asm/arch/clock.h>
#include <asm/arch/hardware.h>
@@ -30,6 +31,14 @@ int arch_cpu_init(void)
share_all_segments(11); /* PCIE */
#endif
+ /*
+ * just initialise the COM2 port so that TI specific
+ * UART register PWREMU_MGMT is initialized. Linux UART
+ * driver doesn't handle this.
+ */
+ NS16550_init((NS16550_t)(CONFIG_SYS_NS16550_COM2),
+ CONFIG_SYS_NS16550_CLK / 16 / CONFIG_BAUDRATE);
+
return 0;
}