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// SPDX-License-Identifier: GPL-2.0-or-later OR MIT
/*
* Copyright (C) 2024 PHYTEC America LLC
* Author: Garrett Giordano <ggiordano@phytec.com>
*/
#include <asm/arch/hardware.h>
#include <asm/io.h>
#include <spl.h>
#include <fdt_support.h>
#include "../common/am6_som_detection.h"
int board_init(void)
{
return 0;
}
int dram_init(void)
{
return fdtdec_setup_mem_size_base();
}
int dram_init_banksize(void)
{
return fdtdec_setup_memory_banksize();
}
#define CTRLMMR_USB0_PHY_CTRL 0x43004008
#define CTRLMMR_USB1_PHY_CTRL 0x43004018
#define CORE_VOLTAGE 0x80000000
#ifdef CONFIG_SPL_BOARD_INIT
void spl_board_init(void)
{
u32 val;
/* Set USB0 PHY core voltage to 0.85V */
val = readl(CTRLMMR_USB0_PHY_CTRL);
val &= ~(CORE_VOLTAGE);
writel(val, CTRLMMR_USB0_PHY_CTRL);
/* Set USB1 PHY core voltage to 0.85V */
val = readl(CTRLMMR_USB1_PHY_CTRL);
val &= ~(CORE_VOLTAGE);
writel(val, CTRLMMR_USB1_PHY_CTRL);
if (IS_ENABLED(CONFIG_SPL_ETH))
/* Init DRAM size for R5/A53 SPL */
dram_init_banksize();
/* We have 32k crystal, so lets enable it */
val = readl(MCU_CTRL_LFXOSC_CTRL);
val &= ~(MCU_CTRL_LFXOSC_32K_DISABLE_VAL);
writel(val, MCU_CTRL_LFXOSC_CTRL);
/* Add any TRIM needed for the crystal here.. */
/* Make sure to mux up to take the SoC 32k from the crystal */
writel(MCU_CTRL_DEVICE_CLKOUT_LFOSC_SELECT_VAL,
MCU_CTRL_DEVICE_CLKOUT_32K_CTRL);
/* Init DRAM size for R5/A53 SPL */
dram_init_banksize();
}
#endif
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