49c9e60eaa
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>
47 lines
1.3 KiB
C
47 lines
1.3 KiB
C
/*
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* Copyright 2011 Freescale Semiconductor, Inc.
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* Copyright 2011 Linaro Ltd.
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*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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#include <linux/init.h>
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#include <asm/page.h>
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#include <asm/sizes.h>
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#include <asm/mach/map.h>
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#include "hardware.h"
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#define IMX6Q_UART1_BASE_ADDR 0x02020000
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#define IMX6Q_UART2_BASE_ADDR 0x021e8000
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#define IMX6Q_UART3_BASE_ADDR 0x021ec000
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#define IMX6Q_UART4_BASE_ADDR 0x021f0000
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#define IMX6Q_UART5_BASE_ADDR 0x021f4000
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/*
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* IMX6Q_UART_BASE_ADDR is put in the middle to force the expansion
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* of IMX6Q_UART##n##_BASE_ADDR.
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*/
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#define IMX6Q_UART_BASE_ADDR(n) IMX6Q_UART##n##_BASE_ADDR
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#define IMX6Q_UART_BASE(n) IMX6Q_UART_BASE_ADDR(n)
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#define IMX6Q_DEBUG_UART_BASE IMX6Q_UART_BASE(CONFIG_DEBUG_IMX6Q_UART_PORT)
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static struct map_desc imx_lluart_desc = {
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#ifdef CONFIG_DEBUG_IMX6Q_UART
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.virtual = IMX_IO_P2V(IMX6Q_DEBUG_UART_BASE),
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.pfn = __phys_to_pfn(IMX6Q_DEBUG_UART_BASE),
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.length = 0x4000,
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.type = MT_DEVICE,
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#endif
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};
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void __init imx_lluart_map_io(void)
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{
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if (imx_lluart_desc.virtual)
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iotable_init(&imx_lluart_desc, 1);
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}
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