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arm: omap5+: Add support for early debug

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For early debug, the following configs needs to be enabled:

CONFIG_DEBUG_UART=y
CONFIG_DEBUG_UART_OMAP=y
CONFIG_DEBUG_UART_CLOCK=48000000
CONFIG_DEBUG_UART_SHIFT=2
CONFIG_DEBUG_UART_ANNOUNCE=y

For DRA7xx:
CONFIG_DEBUG_UART_BASE=0x4806a000

For AM57xx:
CONFIG_DEBUG_UART_BASE=0x48020000

Signed-off-by: Lokesh Vutla <lokeshvutla@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This commit is contained in:
Lokesh Vutla 2017-05-05 13:45:27 +05:30 committed by Tom Rini
parent fbd6295da4
commit 01fe1199d6
1 changed files with 4 additions and 0 deletions
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4
arch/arm/mach-omap2/hwinit-common.c
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@ -12,6 +12,7 @@
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <debug_uart.h>
#include <spl.h>
#include <asm/arch/sys_proto.h>
#include <linux/sizes.h>
@ -159,6 +160,9 @@ void early_system_init(void)
setup_early_clocks();
do_board_detect();
vcores_init();
#ifdef CONFIG_DEBUG_UART_OMAP
debug_uart_init();
#endif
prcm_init();
}