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