51 lines
1.1 KiB
C
51 lines
1.1 KiB
C
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/*
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* Copyright (c) 2016, ARM Limited and Contributors. All rights reserved.
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*
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* SPDX-License-Identifier: BSD-3-Clause
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*/
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#ifndef DFS_H
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#define DFS_H
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#include <stdint.h>
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struct rk3399_sdram_default_config {
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unsigned char bl;
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/* 1:auto precharge, 0:never auto precharge */
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unsigned char ap;
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/* dram driver strength */
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unsigned char dramds;
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/* dram ODT, if odt=0, this parameter invalid */
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unsigned char dramodt;
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/* ca ODT, if odt=0, this parameter invalid
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* only used by LPDDR4
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*/
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unsigned char caodt;
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unsigned char burst_ref_cnt;
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/* zqcs period, unit(s) */
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unsigned char zqcsi;
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};
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struct drv_odt_lp_config {
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uint32_t pd_idle;
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uint32_t sr_idle;
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uint32_t sr_mc_gate_idle;
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uint32_t srpd_lite_idle;
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uint32_t standby_idle;
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uint32_t odt_en;
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uint32_t dram_side_drv;
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uint32_t dram_side_dq_odt;
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uint32_t dram_side_ca_odt;
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};
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uint32_t ddr_set_rate(uint32_t hz);
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uint32_t ddr_round_rate(uint32_t hz);
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uint32_t ddr_get_rate(void);
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uint32_t dram_set_odt_pd(uint32_t arg0, uint32_t arg1, uint32_t arg2);
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void dram_dfs_init(void);
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void ddr_prepare_for_sys_suspend(void);
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void ddr_prepare_for_sys_resume(void);
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#endif /* DFS_H */
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