ram: rockchip: add phy driver code for PX30
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>
This commit is contained in:
Kever Yang
parent
09d7872336
commit
691368c7f7
62
arch/arm/include/asm/arch-rockchip/sdram_phy_px30.h
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62
arch/arm/include/asm/arch-rockchip/sdram_phy_px30.h
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/* 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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59
arch/arm/include/asm/arch-rockchip/sdram_phy_ron_rtt_px30.h
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59
arch/arm/include/asm/arch-rockchip/sdram_phy_ron_rtt_px30.h
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/* 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_RON_RTT_PX30_H
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#define _ASM_ARCH_SDRAM_PHY_RON_RTT_PX30_H
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#define PHY_DDR3_RON_RTT_DISABLE (0)
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#define PHY_DDR3_RON_RTT_451ohm (1)
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#define PHY_DDR3_RON_RTT_225ohm (2)
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#define PHY_DDR3_RON_RTT_150ohm (3)
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#define PHY_DDR3_RON_RTT_112ohm (4)
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#define PHY_DDR3_RON_RTT_90ohm (5)
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#define PHY_DDR3_RON_RTT_75ohm (6)
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#define PHY_DDR3_RON_RTT_64ohm (7)
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#define PHY_DDR3_RON_RTT_56ohm (16)
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#define PHY_DDR3_RON_RTT_50ohm (17)
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#define PHY_DDR3_RON_RTT_45ohm (18)
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#define PHY_DDR3_RON_RTT_41ohm (19)
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#define PHY_DDR3_RON_RTT_37ohm (20)
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#define PHY_DDR3_RON_RTT_34ohm (21)
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#define PHY_DDR3_RON_RTT_33ohm (22)
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#define PHY_DDR3_RON_RTT_30ohm (23)
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#define PHY_DDR3_RON_RTT_28ohm (24)
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#define PHY_DDR3_RON_RTT_26ohm (25)
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#define PHY_DDR3_RON_RTT_25ohm (26)
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#define PHY_DDR3_RON_RTT_23ohm (27)
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#define PHY_DDR3_RON_RTT_22ohm (28)
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#define PHY_DDR3_RON_RTT_21ohm (29)
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#define PHY_DDR3_RON_RTT_20ohm (30)
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#define PHY_DDR3_RON_RTT_19ohm (31)
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#define PHY_DDR4_LPDDR3_RON_RTT_DISABLE (0)
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#define PHY_DDR4_LPDDR3_RON_RTT_480ohm (1)
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#define PHY_DDR4_LPDDR3_RON_RTT_240ohm (2)
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#define PHY_DDR4_LPDDR3_RON_RTT_160ohm (3)
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#define PHY_DDR4_LPDDR3_RON_RTT_120ohm (4)
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#define PHY_DDR4_LPDDR3_RON_RTT_96ohm (5)
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#define PHY_DDR4_LPDDR3_RON_RTT_80ohm (6)
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#define PHY_DDR4_LPDDR3_RON_RTT_68ohm (7)
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#define PHY_DDR4_LPDDR3_RON_RTT_60ohm (16)
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#define PHY_DDR4_LPDDR3_RON_RTT_53ohm (17)
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#define PHY_DDR4_LPDDR3_RON_RTT_48ohm (18)
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#define PHY_DDR4_LPDDR3_RON_RTT_43ohm (19)
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#define PHY_DDR4_LPDDR3_RON_RTT_40ohm (20)
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#define PHY_DDR4_LPDDR3_RON_RTT_37ohm (21)
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#define PHY_DDR4_LPDDR3_RON_RTT_34ohm (22)
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#define PHY_DDR4_LPDDR3_RON_RTT_32ohm (23)
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#define PHY_DDR4_LPDDR3_RON_RTT_30ohm (24)
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#define PHY_DDR4_LPDDR3_RON_RTT_28ohm (25)
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#define PHY_DDR4_LPDDR3_RON_RTT_26ohm (26)
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#define PHY_DDR4_LPDDR3_RON_RTT_25ohm (27)
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#define PHY_DDR4_LPDDR3_RON_RTT_24ohm (28)
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#define PHY_DDR4_LPDDR3_RON_RTT_22ohm (29)
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#define PHY_DDR4_LPDDR3_RON_RTT_21ohm (30)
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#define PHY_DDR4_LPDDR3_RON_RTT_20ohm (31)
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#endif
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205
drivers/ram/rockchip/sdram_phy_px30.c
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205
drivers/ram/rockchip/sdram_phy_px30.c
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// SPDX-License-Identifier: GPL-2.0
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/*
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* (C) Copyright 2018 Rockchip Electronics Co., Ltd.
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*/
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#include <common.h>
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#include <ram.h>
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#include <asm/io.h>
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#include <asm/arch-rockchip/sdram.h>
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#include <asm/arch-rockchip/sdram_common.h>
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#include <asm/arch-rockchip/sdram_phy_px30.h>
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static void sdram_phy_dll_bypass_set(void __iomem *phy_base, u32 freq)
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{
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u32 tmp;
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u32 i, j;
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u32 dqs_dll_freq;
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setbits_le32(PHY_REG(phy_base, 0x13), 1 << 4);
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clrbits_le32(PHY_REG(phy_base, 0x14), 1 << 3);
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for (i = 0; i < 4; i++) {
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j = 0x26 + i * 0x10;
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setbits_le32(PHY_REG(phy_base, j), 1 << 4);
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clrbits_le32(PHY_REG(phy_base, j + 0x1), 1 << 3);
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}
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if (freq <= 400)
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/* DLL bypass */
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setbits_le32(PHY_REG(phy_base, 0xa4), 0x1f);
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else
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clrbits_le32(PHY_REG(phy_base, 0xa4), 0x1f);
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#ifdef CONFIG_ROCKCHIP_RK3328
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dqs_dll_freq = 680;
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#else
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dqs_dll_freq = 801;
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#endif
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if (freq <= dqs_dll_freq)
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tmp = 2;
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else
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tmp = 1;
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for (i = 0; i < 4; i++) {
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j = 0x28 + i * 0x10;
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writel(tmp, PHY_REG(phy_base, j));
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}
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}
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static void sdram_phy_set_ds_odt(void __iomem *phy_base,
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u32 dram_type)
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{
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u32 cmd_drv, clk_drv, dqs_drv, dqs_odt;
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u32 i, j;
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if (dram_type == DDR3) {
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cmd_drv = PHY_DDR3_RON_RTT_34ohm;
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clk_drv = PHY_DDR3_RON_RTT_45ohm;
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dqs_drv = PHY_DDR3_RON_RTT_34ohm;
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dqs_odt = PHY_DDR3_RON_RTT_225ohm;
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} else {
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cmd_drv = PHY_DDR4_LPDDR3_RON_RTT_34ohm;
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clk_drv = PHY_DDR4_LPDDR3_RON_RTT_43ohm;
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dqs_drv = PHY_DDR4_LPDDR3_RON_RTT_34ohm;
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if (dram_type == LPDDR2)
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dqs_odt = PHY_DDR4_LPDDR3_RON_RTT_DISABLE;
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else
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dqs_odt = PHY_DDR4_LPDDR3_RON_RTT_240ohm;
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}
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/* DS */
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writel(cmd_drv, PHY_REG(phy_base, 0x11));
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clrsetbits_le32(PHY_REG(phy_base, 0x12), 0x1f << 3, cmd_drv << 3);
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writel(clk_drv, PHY_REG(phy_base, 0x16));
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writel(clk_drv, PHY_REG(phy_base, 0x18));
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for (i = 0; i < 4; i++) {
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j = 0x20 + i * 0x10;
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writel(dqs_drv, PHY_REG(phy_base, j));
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writel(dqs_drv, PHY_REG(phy_base, j + 0xf));
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/* ODT */
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writel(dqs_odt, PHY_REG(phy_base, j + 0x1));
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writel(dqs_odt, PHY_REG(phy_base, j + 0xe));
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}
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}
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void phy_soft_reset(void __iomem *phy_base)
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{
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clrbits_le32(PHY_REG(phy_base, 0), 0x3 << 2);
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udelay(1);
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setbits_le32(PHY_REG(phy_base, 0), ANALOG_DERESET);
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udelay(5);
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setbits_le32(PHY_REG(phy_base, 0), DIGITAL_DERESET);
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udelay(1);
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}
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void phy_dram_set_bw(void __iomem *phy_base, u32 bw)
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{
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if (bw == 2) {
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clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 0xf << 4);
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setbits_le32(PHY_REG(phy_base, 0x46), 1 << 3);
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setbits_le32(PHY_REG(phy_base, 0x56), 1 << 3);
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} else if (bw == 1) {
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clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 3 << 4);
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clrbits_le32(PHY_REG(phy_base, 0x46), 1 << 3);
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clrbits_le32(PHY_REG(phy_base, 0x56), 1 << 3);
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} else if (bw == 0) {
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clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 1 << 4);
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clrbits_le32(PHY_REG(phy_base, 0x36), 1 << 3);
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clrbits_le32(PHY_REG(phy_base, 0x46), 1 << 3);
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clrbits_le32(PHY_REG(phy_base, 0x56), 1 << 3);
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}
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phy_soft_reset(phy_base);
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}
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int phy_data_training(void __iomem *phy_base, u32 cs, u32 dramtype)
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{
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u32 ret;
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u32 odt_val;
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u32 i, j;
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odt_val = readl(PHY_REG(phy_base, 0x2e));
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for (i = 0; i < 4; i++) {
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j = 0x20 + i * 0x10;
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writel(PHY_DDR3_RON_RTT_225ohm, PHY_REG(phy_base, j + 0x1));
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writel(0, PHY_REG(phy_base, j + 0xe));
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}
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if (dramtype == DDR4) {
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clrsetbits_le32(PHY_REG(phy_base, 0x29), 0x3, 0);
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clrsetbits_le32(PHY_REG(phy_base, 0x39), 0x3, 0);
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clrsetbits_le32(PHY_REG(phy_base, 0x49), 0x3, 0);
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clrsetbits_le32(PHY_REG(phy_base, 0x59), 0x3, 0);
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}
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/* choose training cs */
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clrsetbits_le32(PHY_REG(phy_base, 2), 0x33, (0x20 >> cs));
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/* enable gate training */
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clrsetbits_le32(PHY_REG(phy_base, 2), 0x33, (0x20 >> cs) | 1);
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udelay(50);
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ret = readl(PHY_REG(phy_base, 0xff));
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/* disable gate training */
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clrsetbits_le32(PHY_REG(phy_base, 2), 0x33, (0x20 >> cs) | 0);
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#ifndef CONFIG_ROCKCHIP_RK3328
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clrbits_le32(PHY_REG(phy_base, 2), 0x30);
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#endif
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if (dramtype == DDR4) {
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clrsetbits_le32(PHY_REG(phy_base, 0x29), 0x3, 0x2);
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clrsetbits_le32(PHY_REG(phy_base, 0x39), 0x3, 0x2);
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clrsetbits_le32(PHY_REG(phy_base, 0x49), 0x3, 0x2);
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clrsetbits_le32(PHY_REG(phy_base, 0x59), 0x3, 0x2);
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}
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if (ret & 0x10) {
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ret = -1;
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} else {
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ret = (ret & 0xf) ^ (readl(PHY_REG(phy_base, 0)) >> 4);
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ret = (ret == 0) ? 0 : -1;
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}
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for (i = 0; i < 4; i++) {
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j = 0x20 + i * 0x10;
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writel(odt_val, PHY_REG(phy_base, j + 0x1));
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writel(odt_val, PHY_REG(phy_base, j + 0xe));
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}
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return ret;
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}
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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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{
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u32 i;
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sdram_phy_dll_bypass_set(phy_base, base->ddr_freq);
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for (i = 0; phy_regs->phy[i][0] != 0xFFFFFFFF; i++) {
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writel(phy_regs->phy[i][1],
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phy_base + phy_regs->phy[i][0]);
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}
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if (bw == 2) {
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clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 0xf << 4);
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} else if (bw == 1) {
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clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 3 << 4);
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/* disable DQS2,DQS3 tx dll for saving power */
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clrbits_le32(PHY_REG(phy_base, 0x46), 1 << 3);
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clrbits_le32(PHY_REG(phy_base, 0x56), 1 << 3);
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} else {
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clrsetbits_le32(PHY_REG(phy_base, 0), 0xf << 4, 1 << 4);
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/* disable DQS2,DQS3 tx dll for saving power */
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clrbits_le32(PHY_REG(phy_base, 0x36), 1 << 3);
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clrbits_le32(PHY_REG(phy_base, 0x46), 1 << 3);
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clrbits_le32(PHY_REG(phy_base, 0x56), 1 << 3);
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}
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sdram_phy_set_ds_odt(phy_base, base->dramtype);
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/* deskew */
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setbits_le32(PHY_REG(phy_base, 2), 8);
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sdram_copy_to_reg(PHY_REG(phy_base, 0xb0),
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&skew->a0_a1_skew[0], 15 * 4);
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sdram_copy_to_reg(PHY_REG(phy_base, 0x70),
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&skew->cs0_dm0_skew[0], 44 * 4);
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sdram_copy_to_reg(PHY_REG(phy_base, 0xc0),
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&skew->cs1_dm0_skew[0], 44 * 4);
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}
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