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This sdram_phy_px30.c is based on PX30 SoC, the functions are common for phy, other SoCs with similar hardware could re-use it. Signed-off-by: YouMin Chen <cym@rock-chips.com> Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* Copyright (C) 2018 Rockchip Electronics Co., Ltd
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*/
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#ifndef _ASM_ARCH_SDRAM_PHY_PX30_H
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#define _ASM_ARCH_SDRAM_PHY_PX30_H
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#include <asm/arch-rockchip/sdram_common.h>
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#include <asm/arch-rockchip/sdram_phy_ron_rtt_px30.h>
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struct ddr_phy_regs {
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u32 phy[5][2];
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};
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#define PHY_REG(base, n) ((base) + 4 * (n))
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/* PHY_REG0 */
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#define DIGITAL_DERESET BIT(3)
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#define ANALOG_DERESET BIT(2)
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#define DIGITAL_RESET (0 << 3)
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#define ANALOG_RESET (0 << 2)
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/* PHY_REG1 */
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#define PHY_DDR2 (0)
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#define PHY_LPDDR2 (1)
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#define PHY_DDR3 (2)
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#define PHY_LPDDR3 (3)
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#define PHY_DDR4 (4)
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#define PHY_BL_4 (0 << 2)
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#define PHY_BL_8 BIT(2)
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/* PHY_REG2 */
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#define PHY_DTT_EN BIT(0)
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#define PHY_DTT_DISB (0 << 0)
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#define PHY_WRITE_LEVELING_EN BIT(2)
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#define PHY_WRITE_LEVELING_DISB (0 << 2)
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#define PHY_SELECT_CS0 (2)
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#define PHY_SELECT_CS1 (1)
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#define PHY_SELECT_CS0_1 (0)
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#define PHY_WRITE_LEVELING_SELECTCS(n) ((n) << 6)
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#define PHY_DATA_TRAINING_SELECTCS(n) ((n) << 4)
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struct ddr_phy_skew {
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u32 a0_a1_skew[15];
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u32 cs0_dm0_skew[11];
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u32 cs0_dm1_skew[11];
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u32 cs0_dm2_skew[11];
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u32 cs0_dm3_skew[11];
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u32 cs1_dm0_skew[11];
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u32 cs1_dm1_skew[11];
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u32 cs1_dm2_skew[11];
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u32 cs1_dm3_skew[11];
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};
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void phy_soft_reset(void __iomem *phy_base);
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void phy_dram_set_bw(void __iomem *phy_base, u32 bw);
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void phy_cfg(void __iomem *phy_base,
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struct ddr_phy_regs *phy_regs, struct ddr_phy_skew *skew,
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struct sdram_base_params *base, u32 bw);
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int phy_data_training(void __iomem *phy_base, u32 cs, u32 dramtype);
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#endif
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