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/*
* Copyright (C) 2015-2016 Wills Wang <wills.wang@live.com>
*
* SPDX-License-Identifier: GPL-2.0+
*/
#include <common.h>
#include <asm/io.h>
#include <asm/addrspace.h>
#include <asm/types.h>
#include <mach/ar71xx_regs.h>
#include <mach/ddr.h>
#include <debug_uart.h>
DECLARE_GLOBAL_DATA_PTR;
#ifdef CONFIG_DEBUG_UART_BOARD_INIT
void board_debug_uart_init(void)
{
void __iomem *regs;
u32 val;
regs = map_physmem(AR71XX_GPIO_BASE, AR71XX_GPIO_SIZE,
MAP_NOCACHE);
/*
* GPIO9 as input, GPIO10 as output
*/
val = readl(regs + AR71XX_GPIO_REG_OE);
val |= QCA953X_GPIO(9);
val &= ~QCA953X_GPIO(10);
writel(val, regs + AR71XX_GPIO_REG_OE);
/*
* Enable GPIO10 as UART0_SOUT
*/
val = readl(regs + QCA953X_GPIO_REG_OUT_FUNC2);
val &= ~QCA953X_GPIO_MUX_MASK(16);
val |= QCA953X_GPIO_OUT_MUX_UART0_SOUT << 16;
writel(val, regs + QCA953X_GPIO_REG_OUT_FUNC2);
/*
* Enable GPIO9 as UART0_SIN
*/
val = readl(regs + QCA953X_GPIO_REG_IN_ENABLE0);
val &= ~QCA953X_GPIO_MUX_MASK(8);
val |= QCA953X_GPIO_IN_MUX_UART0_SIN << 8;
writel(val, regs + QCA953X_GPIO_REG_IN_ENABLE0);
/*
* Enable GPIO10 output
*/
val = readl(regs + AR71XX_GPIO_REG_OUT);
val |= QCA953X_GPIO(10);
writel(val, regs + AR71XX_GPIO_REG_OUT);
}
#endif
int board_early_init_f(void)
{
#ifdef CONFIG_DEBUG_UART
debug_uart_init();
#endif
ddr_init();
return 0;
}
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