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/*
* Copyright (C) 2021 Marvell International Ltd.
*
* SPDX-License-Identifier: BSD-3-Clause
* https://spdx.org/licenses
*/
#include "ddr_phy_access.h"
#include <lib/mmio.h>
#include <drivers/marvell/ccu.h>
#include <errno.h>
#define DDR_PHY_END_ADDRESS 0x100000
#ifdef DDR_PHY_DEBUG
#define debug_printf(...) printf(__VA_ARGS__)
#else
#define debug_printf(...)
#endif
/*
* This routine writes 'data' to specified 'address' offset,
* with optional debug print support
*/
int snps_fw_write(uintptr_t offset, uint16_t data)
{
debug_printf("In %s\n", __func__);
if (offset < DDR_PHY_END_ADDRESS) {
mmio_write_16(DDR_PHY_BASE_ADDR + (2 * offset), data);
return 0;
}
debug_printf("%s: illegal offset value: 0x%x\n", __func__, offset);
return -EINVAL;
}
int snps_fw_read(uintptr_t offset, uint16_t *read)
{
debug_printf("In %s\n", __func__);
if (offset < DDR_PHY_END_ADDRESS) {
*read = mmio_read_16(DDR_PHY_BASE_ADDR + (2 * offset));
return 0;
}
debug_printf("%s: illegal offset value: 0x%x\n", __func__, offset);
return -EINVAL;
}
int mvebu_ddr_phy_write(uintptr_t offset, uint16_t data)
{
return snps_fw_write(offset, data);
}
int mvebu_ddr_phy_read(uintptr_t offset, uint16_t *read)
{
return snps_fw_read(offset, read);
}
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