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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright (C) 2018 Rosy Song <rosysong@rosinson.com>
*/
#include <common.h>
#include <init.h>
#include <asm/io.h>
#include <asm/addrspace.h>
#include <asm/types.h>
#include <mach/ar71xx_regs.h>
#include <mach/ddr.h>
#include <mach/ath79.h>
#include <debug_uart.h>
#define RST_RESET_RTC_RESET_LSB 27
#define RST_RESET_RTC_RESET_MASK 0x08000000
#define RST_RESET_RTC_RESET_SET(x) \
(((x) << RST_RESET_RTC_RESET_LSB) & RST_RESET_RTC_RESET_MASK)
#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);
/* UART : RX18, TX22 done
* GPIO18 as input, GPIO22 as output
*/
val = readl(regs + AR71XX_GPIO_REG_OE);
val |= QCA956X_GPIO(18);
val &= ~QCA956X_GPIO(22);
writel(val, regs + AR71XX_GPIO_REG_OE);
/*
* Enable GPIO22 as UART0_SOUT
*/
val = readl(regs + QCA956X_GPIO_REG_OUT_FUNC5);
val &= ~QCA956X_GPIO_MUX_MASK(16);
val |= QCA956X_GPIO_OUT_MUX_UART0_SOUT << 16;
writel(val, regs + QCA956X_GPIO_REG_OUT_FUNC5);
/*
* Enable GPIO18 as UART0_SIN
*/
val = readl(regs + QCA956X_GPIO_REG_IN_ENABLE0);
val &= ~QCA956X_GPIO_MUX_MASK(8);
val |= QCA956X_GPIO_IN_MUX_UART0_SIN << 8;
writel(val, regs + QCA956X_GPIO_REG_IN_ENABLE0);
/*
* Enable GPIO22 output
*/
val = readl(regs + AR71XX_GPIO_REG_OUT);
val |= QCA956X_GPIO(22);
writel(val, regs + AR71XX_GPIO_REG_OUT);
}
#endif
int board_early_init_f(void)
{
u32 reg;
void __iomem *rst_regs = map_physmem(AR71XX_RESET_BASE,
AR71XX_RESET_SIZE, MAP_NOCACHE);
#if !CONFIG_IS_ENABLED(SKIP_LOWLEVEL_INIT)
/* CPU:775, DDR:650, AHB:258 */
qca956x_pll_init();
qca956x_ddr_init();
#endif
/* Take WMAC out of reset */
reg = readl(rst_regs + QCA956X_RESET_REG_RESET_MODULE);
reg &= (~RST_RESET_RTC_RESET_SET(1));
writel(reg, rst_regs + QCA956X_RESET_REG_RESET_MODULE);
ath79_eth_reset();
return 0;
}
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